Reference
Who makes the engines in Chinese generating sets, and how to check them
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Sinospect supplies generating sets and engine power packs from China and checks the engine, alternator and controller of each unit against the order before it ships. To have an offer checked, send it: we reply with what the review would cover and any fee, before paid work begins. Send the offer you want checked →
This reference covers the makers behind diesel generating sets built in China, from about 20 kVA to several megawatts. Every ownership fact, plant and power range below comes from the maker’s own website, catalogue or filing, checked on 3 November 2026. Where we found nothing from a maker on a point, the page says so.
Three layers behind one nameplate
A Chinese generating set is usually built by an assembler around an engine, an alternator and a controller made by three other companies. The set’s nameplate carries the assembler’s name or the buyer’s own brand; the engine brand on the offer names only the engine. Choose an engine family to see who makes it.
Engine makers
Choose an engine family
Alternator makers
- Stamford (Cummins), Wuxi
- Leroy-Somer (Nidec), Fuzhou
- Marathon, Shanghai JV
- Mecc Alte, Haimen
- Engga, Yangjiang
- Faraday, Wuxi
Controller makers
- Deep Sea
- ComAp
- DEIF
- SmartGen
Cummins, built in China
- Legal maker
- Dongfeng Cummins (DCEC), Xiangyang, and Chongqing Cummins (CCEC), Chongqing
- Owner
- 50:50 joint ventures of Cummins with Dongfeng and with Chongqing Machinery & Electric
- Plants
- DCEC founded 1996; CCEC founded 1995, Cummins’s high-horsepower base in China
- Genset engine range, maker’s figures
- DCEC 24–563 kW (3.9–13 L); CCEC 200–1,783 kW (11–50 L)
- Where to check
- Engine serial number on the dataplate; the assembler’s or dealer’s authorisation from the joint venture; parts labels
Assembler
Buys the engine, alternator and controller; builds the base frame, cooling, wiring, canopy or container; tests the set and puts its own nameplate on it.
Exporter or trader
Sells the set abroad. It may own the assembly plant, or only resell what another plant builds.
Buyer
Usually sees one brand and a kVA figure on the offer.
The engine makers
| Engine on the offer | Who makes it | Genset engine range | Where to check |
|---|---|---|---|
| Cummins (DCEC, CCEC) | Dongfeng Cummins and Chongqing Cummins, each 50% owned by Cummins (Cummins 10-K) | DCEC 24–563 kW; CCEC 200–1,783 kW | Engine dataplate and serial number; the joint venture’s authorisation of the assembler |
| Weichai, Baudouin | Weichai Power, Weifang; Baudouin, owned by Weichai since 2009 (Baudouin) | Weichai 18–5,450 kWm; Baudouin 18–4,125 kVA | Parts labels; no public whole-engine check |
| Yuchai | Guangxi Yuchai Machinery, 76.4% held by China Yuchai International (CYI) | 15–4,200 kW | Parts authenticity query; no public whole-engine check |
| SDEC, Shangchai | SNAT, formerly Shanghai Diesel Engine Co.; SAIC Motor holds 38.86% (SNAT) | About 10–2,010 kW | SNAT’s authorised genset-maker list; counterfeit reporting line |
| “Ricardo”, Weifang | Huafeng Power for the R-series (Huafeng); other names unconfirmed | Huafeng sets 15–350 kW prime | The engine maker’s legal name and business licence |
The ranges are the makers’ own and are not comparable figure for figure: Weichai and Yuchai give one power range per series without saying whether it is prime or standby, and Baudouin gives its PowerKit range in kVA. The engine pages give the series one by one.
Other engine makers build genset engines in China and turn up on offers less often:
| Engine on the offer | Who makes it | Genset engine range |
|---|---|---|
| MTU Series 4000 and 2000 | MTU Yuchai Power, a 50-50 joint venture of a Yuchai subsidiary and MTU, set up in 2017 (CYI 20-F); Series 4000 in Yulin, Series 2000 in Suzhou (Rolls-Royce) | Series 4000 1,190–3,490 kW on Yuchai’s list |
| Mitsubishi (SME) | Shanghai MHI Engine, 50% held by SNAT, building under licence from Mitsubishi Heavy Industries Engine & Turbocharger (MHI; SNAT 2025 report) | 500–1,800 kW, for emergency sets |
| Perkins | Perkins’s Wuxi plant, established 2007: 400 Series since 2008, then an 1100 Series line (Perkins) | Electric power named among its markets; genset series not stated |
| Quanchai | Anhui Quanchai Power, listed in Shanghai (Quanchai) | 10–182 kW |
| Yangdong | YTO (Jiangyan) Power Machinery, a China YTO Group subsidiary built on Yangdong (Yangdong) | 10–105 kW |
| Deutz | DEUTZ Power Solution (Xuzhou), 60% held by DEUTZ, builds G-drive engines and sets (DEUTZ 2025 report) | Not given |
Names that hide the maker
- “Cummins generator” on a Chinese offer usually names the engine. The set is built by an assembler around an engine from Dongfeng Cummins or Chongqing Cummins; the set’s maker is the company on the set’s nameplate.
- Baudouin and Weichai share engines. Weichai’s Chinese product site lists the 6M33 to 20M61 genset engines as Weichai engines (Weichai); its English site files the same series under Baudouin.
- “Ricardo” engines are Weifang R-series engines. Huafeng says it developed the series with Ricardo Consulting Engineers in 1983; Ricardo’s own history does not mention it (Ricardo). Separately, SDEC credits Ricardo as co-designer of its H and Z genset-engine series. Several other names sold as Weifang or Ricardo engines have no maker’s website that we could find.
- SDEC, Shangchai, 上柴 and SNAT are one company under its old and new names.
- Yuchai names two companies: Guangxi Yuchai Machinery Co., Ltd., the engine maker controlled by the NYSE-listed China Yuchai International, and the state-owned Guangxi Yuchai Machinery Group, which holds more than 20 subsidiaries.
The alternator and the controller
The alternator decides whether the set can carry the load’s current and start its largest motor; the controller runs the starting, protections and any synchronising. Both are bought in by most assemblers.
| Alternator | Maker and China plant |
|---|---|
| Stamford, AvK | Cummins Generator Technologies; two plants in Wuxi, producing since 1996 (Stamford) |
| Leroy-Somer | Nidec; Leroy Somer Electro-Technique (Fuzhou), inaugurated in 1990 (Nidec) |
| Marathon | Sold by Regal Rexnord to WEG in 2024 (Regal Rexnord); its China alternators come from a joint venture with Shanghai Electric formed in 1996, whose transfer was deferred |
| Mecc Alte | Mecc Alte Alternator Haimen Ltd, Nantong, Jiangsu (Mecc Alte) |
| Engga | Engga (Yangjiang) Electric Co., Ltd., Guangdong; a Chinese maker |
| Faraday | Wuxi Faraday, Jiangsu, founded 2004; a Chinese maker |
Two alternator makers publish a public check. STAMFORD says its Wuxi company is the only one authorised to make and sell STAMFORD alternators in China (STAMFORD), and every new STAMFORD alternator carries a hologram whose 7-digit number can be checked online (STAMFORD verification). Leroy-Somer checks a serial number against its factory records at gen.ls1.do (Nidec).
Controller makers seen on Chinese sets include Deep Sea (UK), ComAp (Czech Republic), DEIF (Denmark) and SmartGen (China). SmartGen is listed in Shenzhen (SmartGen 2025 report), and Deep Sea lists an official distributor for China (Deep Sea). The offer should name the make and model; “Deep Sea or SmartGen” leaves the choice to the assembler.
Assembler, exporter or trader
The company that quotes may build the set, own the plant that builds it, or resell a set built elsewhere. Ask for the legal name of the plant that assembles and tests the set, in Chinese, and its unified social credit code (统一社会信用代码), the 18-character number on every Chinese business licence. The name on the contract, the plant on the test report and the maker on the set’s nameplate should lead to the same company, or the offer should explain why not.
Authorisation lists: dated, and by legal entity
Some engine makers publish the assemblers they authorise to build sets on their engines. Chongqing Cummins posts its 2026 list of authorised genset makers and distribution centres, valid for the calendar year, under “电力主机厂名录” on its site (CCEC). Cummins China lets you look up a genset maker’s authorisation code for QSG12, QSK50 and QSK60 engines: the code is genuine only if the maker’s name comes back (Cummins China). SNAT posts a yearly list of authorised genset makers and dealers for SDEC engines; on 3 November 2026 its newest was still the 2025 list, posted on 18 April 2025 (SNAT). Such lists name legal entities, not brands, and change every year: a certificate from an earlier year is not proof of authorisation today. Ask which list the assembler is on, under which legal name, and check that entity against the assembler named in your contract. When the seller is not the assembler, the contract should name both and say who holds the warranty.
How to check a set before you pay
- Get the engine, alternator and controller by make and model, and the engine’s production plant, in writing before any deposit.
- Identify the assembler by its Chinese legal name and credit code, and check it against the engine maker’s authorisation list where one is published.
- Ask for photos of the dataplates of the actual units on your order: engine, alternator and controller, each with model, serial number, rating and date.
- Check each plate against the order: the model, the rating, and a production date that fits “new production”.
- At the factory test, match the serial numbers on the set to the photos, the test report and the packing list.
The check is not a formality. In September 2026, checking dataplate photos sent by Chinese sellers of Cummins engine power packs, we found an NTA855-G1A plate dated 2018 for a line specified as an NTA855-G4, a plate dated 2023 on an engine quoted as 2026 production, and a “unit” photo that was a stock picture taken in 2022. None of these proved a counterfeit; each showed that the photo did not match the engine specified or described.
What we found no maker publishing
- A public check of a whole engine by serial number: every official route we found covers parts or the assembler’s authorisation.
- The nameplate layout and serial-number format of Weichai, Baudouin, Yuchai, SDEC and the Weifang engines.
- A genset-engine warranty for Weichai-branded, Yuchai, SDEC or Dongfeng Cummins engines. Baudouin and Chongqing Cummins publish theirs; see the engine pages.
- Prime and standby figures for each Weichai and Yuchai series on their list pages.
Where the maker publishes nothing we could find, put the question in the offer: ask the seller to state the rating basis, the warranty and who handles a claim, in writing. The buyer’s guide to diesel generating sets from China lists what an offer must state.
Frequently asked questions
Who makes Baudouin engines? Is Baudouin a Chinese company?
Baudouin was founded in Marseille in 1918 and is still headquartered in France, in Cassis. Weichai Power bought it in January 2009, after Baudouin went into receivership, and Baudouin describes itself as part of the Weichai Group. Its PowerKit generator engines are built in three plants: Cassis in France, Pune in India and Weifang in China. Weichai sells several of the same M-series engines under its own name.
Is a Cummins engine made in China a genuine Cummins engine?
Cummins builds engines in China through joint ventures it owns 50% of: Dongfeng Cummins (DCEC) for the B, C and L series and Chongqing Cummins (CCEC) for the larger NT855, K19, K38 and K50 families. Those are Cummins products. What needs checking is the individual engine: its model and serial number on the dataplate, its production date, and whether the assembler is authorised by the joint venture.
What is a “Ricardo” diesel engine from China?
In Chinese offers, “Ricardo” usually means the R-series engines from Weifang. Huafeng Power, a Shanghai-listed company in Weifang, says it developed the R-series jointly with Ricardo Consulting Engineers in 1983. We found nothing from Ricardo itself about these engines, so the name says nothing about who built a given engine. Ask the seller for the engine maker’s legal name.
Are SDEC, Shangchai and SNAT the same company?
Yes. Shanghai Diesel Engine Co. (SDEC, 上柴, “Shangchai”) is now named Shanghai New Power Automotive Technology Co., Ltd. (SNAT). SAIC Motor is its largest shareholder, with 38.86%. Its official site is snat.com and its export site sdeciepower.com; the old sdec.com.cn domain no longer resolves.
Can I check a Chinese engine’s serial number online?
Not with a public whole-engine check. Weichai, Yuchai, Cummins China and Dongfeng Cummins all publish anti-counterfeit checks, but for parts. Cummins’s QuickServe shows the data for an engine serial number to registered owners, and Cummins China checks a genset maker’s authorisation code. Chongqing Cummins and SDEC publish lists of authorised genset makers. The practical check is the dataplate of the actual engine, matched to the order and to the engine maker’s records through its service network.
Who makes the alternators on Chinese generating sets?
International makers with plants in China and Chinese makers. Stamford (Cummins) builds alternators in Wuxi, Leroy-Somer (Nidec) in Fuzhou, Mecc Alte in Haimen, and Marathon’s China alternators come from a joint venture with Shanghai Electric; Marathon was sold to WEG in 2024. Engga and Faraday are Chinese alternator makers. As with the engine, the offer should name the alternator’s make and model, and its dataplate should match the order.
Engines, sets and checks
Sinospect supplies generating sets from 50 to 275 kVA and larger sets per project, and engine power packs to assemblers. On a set you buy directly, our engineer checks the dataplates against the order and witnesses the load test: see generator FAT witnessing.
Comparing offers for a Chinese generating set?
Send the offer you have: we reply with what a review would cover and any fee before paid work begins. To buy a set from us instead, see the generating-set offer.