Top 10 Diesel Engine Manufacturers in 2023


Country: China


Products: Power system, automobile business, engineering machinery, intelligent logistics, agricultural equipment, marine transportation equipment.

About the company:

Weichai, founded in 1946, is an earlier manufacturer of diesel engines.

It is a large enterprise integrating power system, automobile business, engineering machinery, intelligent logistics, agricultural equipment, marine transportation equipment and other businesses.

Weichai has 90000 employees worldwide, and its revenue in 2019 exceeded 260 billion yuan.

Weichai is an international multinational group, with business segments such as power system automobile business, engineering machinery, intelligent logistics, agricultural equipment, marine transportation equipment, etc. in the world.

Its subsidiaries cover Europe, North America, Asia and other regions, and its products are exported to more than 110 countries and regions.

It owns 7 listed companies and 9 stocks at home and abroad, including Weichai Power (2338. HK; 000338. SZ), Weichai Heavy Machinery (000880. SZ), Yaxing Bus (600213. SH) and KGX. F.

Weichai attaches great importance to scientific and technological innovation.

It has the National Laboratory for Internal Combustion Engine Reliability, the National Research Center for Commercial Vehicle Powertrain Engineering Technology, the National Industrial Innovation Strategy Alliance for Commercial Vehicle and Engineering Machinery New Energy Power Systems, research bases such as “Academician Workstation” and “Postdoctoral Workstation”, and a national intelligent manufacturing demonstration base.

We have set up R&D centers in Weifang, Shanghai, Xi’an, Chongqing, Yangzhou and other places in China, and set up cutting-edge technology innovation centers in many places around the world. We have built a global collaborative R&D platform to ensure that the enterprise’s technology level is always in the forefront of the world.

Weichai sticks to the international development strategy and has created a coordinated industrial layout in the world.

In 2004, Weichai Power was listed in Hong Kong, becoming a listed company in China’s internal combustion engine industry in Hong Kong, and opening up the path of capital internationalization.

In 2005, Weichai Power merged with Hunan Torch Automobile Group, creating a heavy truck gold industry chain (Weichai Engine+Fast Transmission+Hande Axle+Shaanxi Automobile Heavy Truck). After that, it absorbed and merged Hunan Torch through share exchange, and returned to A-share from H-share, creating a “Weichai Model” in the capital market.

Since 2009, Weichai has made the following achievements:

1. Merger and acquisition of French Bodouan Engine Company with a history of 100 years;

2. Strategically reorganize the luxury yacht manufacturer Faraday of Italy;

3. Strategic cooperation with the industrial forklift and service provider Kaiao Group;

4. Merger and acquisition of Linde Hydraulic and realization of localization;

5. Support CAO Group to acquire Dematic, an automated logistics provider;

6. Strategic investment can replace the natural power system supplier PS Company of the United States, the solid oxide fuel cell supplier Siris Company of the United Kingdom and the hydrogen fuel cell supplier Ballard Company of Canada;

7. Strategically reorganize the German Otis Company and the Austrian VDS Company;

8. Achieved global coverage and balanced development of strategic business.

At the same time, Weichai has established production bases in India and other places through technology output, production capacity cooperation and other ways, realizing the landing of localized manufacturing.

At the same time of rapid development, Weichai actively advocates energy conservation, emission reduction and green production, vigorously promotes the upgrading and progress of industry technology, develops mutually beneficial and win-win with the upstream and downstream of the industrial chain, and shares development achievements with all sectors of society.


Country: China


Products: Filter, lubricating oil, connecting rod

About the company:

Guangxi Yuchai Machinery Group Co., Ltd., founded in 1951 and headquartered in Yulin, Guangxi, is an investment and financing management company and a large state-owned enterprise group with capital operation and asset management as its core.

It has more than 30 wholly-owned, holding and shareholding subsidiaries.

Yuchai is a complete internal combustion engine manufacturing base with complete product types in China.

It has industrial base layout in Guangxi, Guangdong, Jiangsu, Anhui, Shandong, Hubei, Sichuan, Chongqing, Liaoning and other places.

Yuchai develops the engine industry chain and the new energy industry chain.

Guided by the engine and new energy key core parts supporting, it forms a comprehensive industrial cluster base integrating the internal combustion engine complete machine industry, the new energy complete vehicle industry, the supporting key parts industry, the terminal equipment manufacturing industry, and the commerce, finance and logistics industry.

It creates a hundred billion yuan industrial cluster led by Yuchai, and drives the high-quality development of the mechanical industry in the region.

Engine manufacturing and industrial chain: strengthen the main engine industry, actively extend upstream and downstream, form an integrated equipment manufacturing system of “parts, complete machine and terminal”, and build a gold industrial chain.

With Huayuan Co., Ltd., Yuchai Advanced Lubricants, Chengxin Company, Jinchuang Company and other subsidiaries as the main body, we will mainly develop filters, lubricants, connecting rods and other products, and promote the continuous extension of products to key components such as rear processing, electronic control common rail and electrical component systems and other high value-added emerging products, forming core component system advantages.

With Yuchai Co., Ltd., Power Company, CRRC Yuchai, Ship Power Company and other subsidiaries as the main body, we will make real and specialized use of refined vehicles, agricultural, engineering machinery, marine, power generation, locomotives and military engines, and accelerate the development of new energy power systems, accelerate the integration of power systems, make full use of intelligent production methods, and realize the transformation from manufacturing enterprises to service-oriented manufacturing enterprises.

Relying on Yuchai Special Automobile, Yuchai Dongte, Yuchai Heavy Industry and other subsidiaries, accelerate the development of high-tech, high value-added, environment-friendly special vehicles, environmental sanitation equipment, engineering machinery and equipment, and strengthen the terminal industry.

New energy vehicles and automobile service industry: with the help of Yuchai New Energy Vehicle Company, Yuchai Special Automobile Co., Ltd. and Yuchai Dongte, focus on new energy vehicles and fuel cell business, and build a new energy and environmental protection industry chain with pure electric commercial vehicles, urban logistics vehicles, and environmental sanitation vehicles as the starting point.

Actively research, develop and produce “three electricity” (electric drive, battery, electronic control) systems, and vigorously develop new energy power systems, electrical accessories, fuel cells and other core components of new energy vehicles.

The vehicle manufacturing platform is used to expand the variety and scale of new energy vehicles, including new energy police vehicles, escort vehicles, monitoring vehicles, fire engines, emergency rescue vehicles, van logistics vehicles, sanitation vehicles, etc.

Rely on Yuchai New Energy to vigorously invest in the construction and professional operation management of clean energy power generation projects, and lay out photovoltaic power stations, fast charging piles and power stations.

Guided by serving the new energy automobile industry chain, Yuchai Financial Leasing was established, financing channels and platforms were broadened, and Xiushi expanded financial leasing, auto commerce, auto after-sales services, etc.

Logistics industry chain: Rely on Yuchai Logistics Co., Ltd. to build logistics, warehousing, distribution and terminal businesses, develop supply chain finance and logistics industry parks, and build a logistics industry chain.

Yuchai has established a marketing management system that integrates product sales, application development, after-sales service and parts monopoly.

It has more than 3000 service stations and more than 5000 parts sales outlets all over the world to provide services for users.


Country: USA


Products: Diesel and natural gas engines, hybrid and electric power platforms and related technologies, including filtration, post-treatment, turbocharging, fuel system, control system, air intake treatment system, automatic transmission, power system, battery, electric power system, hydrogen production and fuel cell products.

About the company:

Cummins, founded in the United States in 1919, is a global well-known power solution provider, a global supplier of power generation systems and related parts and services, providing diesel and natural gas engines, hybrid power, electric power platforms and related technologies.

As a global pioneer in power technology, Cummins designs, produces and distributes diversified power solutions and provides service support.

Cummins has about 578800 employees around the world.

It is committed to giving play to its corporate responsibility through education, environment and equal opportunities to build a healthy community and drive the world’s prosperity and development.

Cummins provides customers with product and service support through thousands of dealers worldwide.

In 2020, the Company will achieve revenue of 19.8 billion US dollars and profit of about 1.8 billion US dollars.

4. Jiefang Automobile

Country: China

Founded: 1843

About the company:

Wuxi Diesel Engine Factory of FAW Jiefang Automobile Co., Ltd. (hereinafter referred to as “Xichai”), located in Wuxi, Jiangsu Province, is a wholly-owned enterprise under China First Automobile Group Corporation.

The factory was founded in 1943. After 70 years of development, it now covers an area of 670000 square meters, employs more than 3500 people, has a total assets of 6.35 billion yuan, and brand intangible assets of 10.229 billion yuan.

At present, it has two engine bases, engine remanufacturing bases and modified vehicle development bases, forming a production system with international leading equipment, domestic leading management and leading quality.

It has an annual production capacity of 600000 diesel engines and 15000 modified vehicles.

Wuxi Diesel Engine Factory of FAW Jiefang Automobile Co., Ltd. (hereinafter referred to as “FAW Jiefang Xichai”) is an existing engine enterprise with a long history in China.

The factory was founded in 1943. After liberation, it became a backbone enterprise in the agricultural machinery industry of new China. In 1992, it joined FAW Group and became a wholly-owned subsidiary of FAW Jiefang Automobile Co., Ltd. since 2003.

Adhering to the principle of limited hardship and independent innovation, the factory has gone through three stages of entrepreneurship.

In the first entrepreneurial stage, Xichai created a number of industry firsts, delivered several talents to the society, and won the reputation of “producing products and talents”.

In the second entrepreneurial stage, Xichai seized the opportunity to actively join FAW, completed the successful transformation to the automotive industry, and achieved extraordinary and leapfrog development.

In the third entrepreneurial stage, FAW Jiefang Xichai developed CA6DL engine, formed seven series of products, became the “Aowei” brand, and reached the stage of sales revenue exceeding 10 billion yuan.

Since 2011, FAW Jiefang Xichai has started its fourth venture.

The factory is located in Wuxi City, Jiangsu Province, with more than 3300 contract employees, a total asset of 7.7 billion yuan, intangible assets of 10.229 billion yuan, and an area of 635000 square meters.

It is divided into two major engine bases, engine remanufacturing bases, and modified vehicle production bases.

It has an annual production capacity of 470000 engines, 5000 modified vehicles, and 2500 remanufactured engines.

FAW Jiefang Xichai has the ability of independent research and development in China, and has mastered a number of key core technologies.

It has four major lines, namely Aowei, Hengwei, Kangwei and Jinwei. Its power covers 40 to 550 horsepower, and the engine market has more than 4 million units.

Up to now, FAW Jiefang Xichai’s share in the domestic heavy engine market (more than 350 horsepower) has remained at the forefront of the industry, and the 111 liter engine market has remained at the forefront.

In June 2019, FAW Jiefang officially released the brand of “Jiefang Power”, combining Xichai and Dachai into one.

5. Yunnei

Country: China

Founded: 1956

About the company:

Yunnan Yunnei Power Group Co., Ltd., formerly known as “Yunnan Internal Combustion Engine Factory”, was established in 1956.

In order to achieve the company’s collectivization and diversified development strategy, on January 24, 2014, it was changed to its current name after restructuring and completing industrial and commercial registration.

The company is a large state-owned enterprise and one of the 512 enterprises supported by the state.

By closely focusing on the main line of “lean management of value added in the whole value chain system”, the company continued to deepen the five major campaigns of market, quality, cost, service and brand.

At the same time, in line with the new situation of economic development, the company adjusted the pattern of industrial development, focusing on the development of four major industrial sectors: intelligent new energy powertrain, modified vehicles and intelligent agricultural machinery, automotive electronics, intelligent doors and windows, and new energy-saving materials. Its products mainly involve powertrain Intelligent agricultural machinery with plateau characteristics, new energy saving materials, new energy modified vehicles, etc.

6. Quanchai

Country: China

Founded: 1949

About the company:

Anhui Quanchai Power Co., Ltd., a subsidiary of Anhui Quanchai Group Co., Ltd., is a domestic specialized engine R&D and manufacturing enterprise.

It was successfully listed on the Shanghai Stock Exchange in 1998 (stock code: 600218).

It has many wholly-owned or holding subsidiaries such as Tianhe Machinery, Oubo Pipe Industry, Jintian Machinery, Zhongneng Yuanjun, and has the ability to produce 600000 multi cylinder diesel engines and 50000 tons of plastic pipes annually.

The company has enterprise technology center, national postdoctoral research workstation, Anhui Academician Workstation, Anhui Industrial Design Center, etc.

It has established good cooperation relations with many internal combustion engine research institutions and institutes at home and abroad, ensuring that the company’s product technology always keeps pace with the global advanced level.

Relying on the forward dark product R&D and innovation capabilities, the company’s series of engines and hydrogen fuel cells have reached the domestic advanced level in terms of economy, reliability, environmental protection, etc

Engine products are widely used in commercial vehicles, agricultural equipment, engineering machinery, generator sets, etc.

The products have passed the European Union CE and the United States EPA4 certification.

With good product quality and perfect after-sales service, the product sales and service network covers many countries and regions such as China, Southeast Asia and Europe, and the cumulative sales volume of multi cylinder engines exceeds 6.5 million.

In order to improve the manufacturing capacity, the company actively accelerated the application of automatic, digital and intelligent manufacturing equipment and processes.

A number of internationally advanced equipment and processes, such as horizontal static pressure molding, EPC, vertical horizontal conversion processing center, online detection, intelligent robots, AGV and RGV transport trolley, have been effectively applied, laying a foundation for high-quality product manufacturing of Quanchai.

In the future, Quanchai will unswervingly focus on users, adhere to the concept of “quality, market, efficiency and survival”, rely on excellent products and manufacturing technology, adhere to green and connotative growth, and build a century old enterprise.

7. Xinchai

Country: China

Founded: 2007 

About the company:

Zhejiang Xinchai Co., Ltd. is an enterprise with distinctive personality. It is self reliant, pioneering and innovative.

It has created the famous brand of “Xinchai” from scratch, from small to large, and from independence to innovation. It has created the excellent group enterprise culture of Xinchai, and provides high-quality power for the society endlessly.

The accurate market positioning and excellent cost performance make the products sell well in China, Southeast Asia, Europe and America, and gradually become the leader of the industry.

The products cover seven platforms, namely N, D, K, E, B, H and F. More than 100 models and more than 1300 variants have formed a complete market supporting structure, with the power range covering 10-220PS.

It has built a good development pattern in which four major markets, including industrial vehicles, engineering machinery, agricultural machinery and small generator sets, have gone hand in hand and enjoy a high reputation.

The company insists on taking customers as the center and building a “insight” platform, which runs through the whole product life cycle to meet the diversified needs of customers to the greatest extent.

The company attaches great importance to technological innovation, actively develops human resources, has excellent provincial enterprise technology research and development center and national postdoctoral research workstation, has built a strong product research and development network and platform in China, and actively cooperates with the world’s top research and development institutions such as American Southwest Research Institute, Austrian AL Company, Italian AE, and domestic famous universities such as Zhejiang University, Tianjin University, Jiangsu University.

The core competition of enterprises has shifted from cost advantage to technology advantage.

The company adheres to the quality concept of “caring for customers and pursuing better”, constantly improves product quality and work quality, and takes information technology as the link in management to comprehensively introduce lean production;

In production, the introduction of advanced equipment at home and abroad effectively ensures the reliability of products.

8. New Power Technology

Country: China


Products: diesel motor

About the company:

Shanghai New Power Automotive Technology Co., Ltd. (formerly known as Shanghai Diesel Engine Co., Ltd., Shanghai Diesel Engine Factory, Shanghai Wusong Machine Factory, etc.) was founded in 1947 and now belongs to SAIC Motor Corporation.

In 1993, it was restructured into a state-owned holding company that issued A and B shares in Shanghai Stock Exchange.

It is an advanced supplier of diesel engines in all series and in many fields in China, providing customers of commercial vehicles, engineering machinery, agricultural machinery, ships and generator sets at home and abroad with technologically advanced products.

In 2021, the Company will realize a new pattern of integrated development of the two industrial sectors of “heavy truck+diesel engine” by implementing major asset restructuring.

The heavy truck business will take the wholly-owned SAIC Hongyan Automobile Co., Ltd. as the platform, actively layout smart heavy trucks and new energy heavy trucks, build a leading enterprise in the field of commercial vehicle heavy trucks, and create a leading position in smart heavy trucks and new energy heavy trucks through innovation in new energy, intelligent driving, intelligent networking and other technical fields;

The diesel engine business will continue the positioning of the domestic advanced full range, multi field independent supplier, continue to expand the product type spectrum, expand new market segments, further enhance the product’s differentiated competitive advantage in new energy and intelligent networking, and provide domestic and foreign commercial vehicles, engineering machinery, agricultural machinery, ships and generator sets with technologically advanced products.

The company has a national certified enterprise technology center and postdoctoral workstation, a passenger car standard quality management system and advanced automated and digital production lines, and vigorously promotes the construction of intelligent factories.


Country: China


Products: Medium and small power diesel engine

About the company:

Changchai started in 1913. It is an early professional manufacturer of internal combustion engines in China.

It has an annual production capacity of 800,000 diesel engines, 550,000 tons of castings and 2,200,000 gasoline engines.

It is a modern enterprise specializing in research, development and production of medium and small power diesel engines.

Changchai Co., Ltd. is a national industrial enterprise with a history of more than 100 years.

It is one of the earliest professional manufacturers of internal combustion engines in China and a listed company. At present, it owns both A shares and B shares.

Up to now, Changchai has produced more than 30 million diesel engines and has exported them to 78 countries and regions.

Changchai mainly produces medium and small power diesel engines with a power range of 1.62-117.6 kilowatts.

There are more than 1000 varieties.

Its products are widely used in pickup trucks, light trucks, low-speed trucks, tractors, harvesters, gardening machinery, plant protection machinery, high-speed plug-in machines, generator sets, engineering machinery, cold chains, ships and other fields.

Changchai has an enterprise technology center, a postdoctoral research workstation, and a small and medium power internal combustion engine engineering technology research center in Jiangsu Province.

It has successfully launched non road national III, national V electronic controlled diesel engines and vehicle national V diesel engines in the industry using three advanced technology routes, namely, high pressure common rail, electrically controlled single pump, and electrically controlled VE pump, recognized by the Ministry of Environmental Protection of the People’s Republic of China, forming a variety of models.

The application of new technology makes Changchai products more reliable and economical, and can fully meet the requirements of vehicle transportation, harvester, wheel trailer, loader, plant protection machinery and other supporting fields.

At the same time, in the field of non road machinery, Changchai has many multi cylinder engines that have passed the US EPA and EU EC emission certification, and obtained green permits to enter the European and American markets, which makes it competitive in the international market.

So far, Changchai has nearly 40 provincial and municipal high-tech products, and has obtained 145 patents authorized at home and abroad, including 14 invention patents.

Changchai has advanced internal combustion engine manufacturing equipment and technology in China.

It has successively introduced advanced casting, processing, assembly and internal combustion engine testing equipment from the United States, Germany, Switzerland, Japan, Austria and other countries.

The application of advanced modern and intelligent equipment not only improves the manufacturing level of Changchai equipment, but also effectively leads and promotes the technical development of agricultural machinery industry.

Changchai has built a sales and service network covering the whole country in China, with 5 sales business units, 27 sales and service centers, and 799 service stations.

It is a senior certification enterprise of the customs, with a perfect diesel engine sales and service network system, and can provide customers with high-quality, efficient, and timely services.


Country: China

Founded: 1930

About the company:

China Heavy Duty Truck Group Co., Ltd. (hereinafter referred to as “CNHTC”), formerly known as Jinan Automobile Manufacturing Plant, was founded in 1930 and is the cradle of China’s heavy duty truck industry.

In 1960, China’s first heavy truck, the Yellow River JN150 8-ton truck, was produced, ending the history of China’s inability to produce heavy trucks.

In 1983, the company successfully introduced the Austrian Steyr Heavy Vehicle Project, which is an early enterprise in China that comprehensively introduced foreign heavy vehicle manufacturing technology.

“Steyr” once became a synonym for heavy trucks in China.

At present, CNHTC is mainly engaged in the research, development, production and sales of various heavy trucks, special vehicles, special vehicles and engine, gearbox, axle and other assemblies and auto parts.

It has a full range of commercial vehicle brands such as Huanghe, Shandeka, HOWO, etc.

It is a heavy truck enterprise with the most complete drive form and power coverage in China’s heavy truck industry.

The products have been exported to more than 110 countries and regions, 22 overseas KD production plants have been established in 14 countries and regions, nearly 300 dealers at all levels have been developed in more than 90 countries and regions, and nearly 500 service and accessory outlets have been established.

Focusing on the strategic positioning of building a world-class full range commercial vehicle group, CNHTC has established a strategic transformation from technology introduction to independent positive development, constantly increased R&D investment and high-end talent introduction, enhanced independent innovation ability, mastered key core technologies, and achieved scientific and technological self-reliance.

It has the first batch of nationally recognized enterprise technology centers, the National Heavy Duty Truck Engineering Technology Research Center, the National Heavy Duty Truck Quality Supervision and Inspection Center, and the engine, vehicle, component vibration, strength testing and other equipment have reached the world’s advanced level.

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