Weichai Brand Guidelines: A 1946 Ironworks, Weifang Diesels & the WP Marine Range

An ironworks of 1946 and a diesel works in Weifang.

Weichai says it was founded in 1946, and English Wikipedia gives the starting point as Yucheng Ironworks in Weihai, on the Shandong coast. After two years, Wikipedia says, the works moved inland to Weifang, began building 15- and 40-horsepower low-speed diesel engines and took the name Dahua Machinery Factory. In 1953 it launched the 6108 series diesel and was renamed Weifang Diesel Engine Works.

Marine engines were part of the story early. From 1955, English Wikipedia says, the factory built the Czech-designed 6160 diesel, which became the dominant engine for China’s coastal fishing and inland shipping, and in 1968 it developed the 6200 marine diesel for light fishing vessels. A licence for the Austrian Steyr WD615 truck engine followed in 1984, and the WD615 later became the factory’s standard engine for construction machinery. After a difficult period in 1998, Wikipedia says, new management reorganised labour, staffing and pay.

The modern structure dates from 2002, when Weichai Power was incorporated, on 23 December, according to English Wikipedia. Its shares began trading in Hong Kong in 2004 and in Shenzhen in 2007. In 2005 it launched the WP10 and WP12 engines of its “Landking” series and took over Torch Automobile Group, adding heavy trucks, transmissions and axles; in 2006, English Wikipedia says, it formed an “International Strategic Alliance” with Foton, Bosch and the Austrian engineering firm AVL; and in 2007 the marine and power-generation business Weichai Heavy Machinery was listed in Shenzhen. Today the parent is Weichai Holding Group, which the company describes as the core subsidiary of Shandong Heavy Industry Group; English Wikipedia describes it as state-owned.

Marine engines, from small WP sets to the WH17.

Weichai sells engines for trucks, buses, construction and farm machinery, and boats, and its marine side is presented as one part of that wider range. Its product site lists about forty marine main propulsion engines in the WP and WD families, including the WP2.3N, WP4.1N, WP6, WP7 and WD10 series, each published with a fuel type of marine gas oil, a power range and a speed range; the WP7, for example, is listed from 110 to 220 kilowatts. Separate pages cover marine generator sets and a range extender for marine applications.

At the larger end is the WH17, a medium-speed marine engine unveiled on 13 March 2024 at the Asia Pacific Maritime exhibition in Singapore. Hellenic Shipping News reported that the series runs from a six-cylinder model of 1,000 horsepower to a sixteen-cylinder version of 3,200 horsepower, followed seven years of development, and is aimed at inland and offshore transport ships, engineering and passenger vessels and fishing boats. The report described an electronically controlled common-rail fuel system and an alloy steel crankshaft, and said a WP2.5N silent generator set was shown alongside it.

Weichai also owns marine engine and boat makers abroad. English Wikipedia says the group’s overseas acquisitions began in January 2009 with Baudouin, the French marine engine maker, and that in July 2012 it agreed to take 75 percent of Ferretti Group, the Italian yacht builder. The company’s own marine pages list Ferretti’s brands, among them Ferretti Yachts, Riva, Pershing and Wally, and describe workboats for offshore wind maintenance, port operations and surveys, and leisure boats for sightseeing.

Partnerships run through the engine business. Weichai and Bosch began working together in 1999, China Daily reported in November 2023, notably on common-rail fuel injection; on 3 November 2023 the two signed a strategic cooperation agreement covering new energy, high-efficiency diesel engines and intelligent transport. The paper reported that both chairmen spoke of extending the work into fuel cells, and that the two companies had helped bring common-rail systems into wide use in the Chinese market.

Design and documentation.

Marine engine makers sell to shipyards, shipowners and ship managers rather than to the public, and their websites read like technical catalogues. The core of most is an engine range sorted by bore and output. WinGD names its two-stroke engines by cylinder bore in centimetres, from the X52 to the X92, while Everllence gives its four-stroke engines bore-and-stroke numbers such as 32/44 and 49/60. Letters added to those numbers mark the fuel, the generation or the version.

The pictures follow the product. These companies publish cutaway renderings that open an engine to show its cylinders, pistons and crankshaft, alongside photographs of finished engines on test beds and in engine rooms. Model names, cylinder counts and output figures sit beside the images, so a page often reads more like a data sheet than an advertisement.

Fuel has become one of the main ways these makers describe themselves. Their websites sort engines by fuel type as well as by vessel type, with pages for liquefied natural gas, methanol, ammonia and LPG; WinGD adds ethanol, and Everllence marks its alternative-fuel two-stroke engines with a suffix for each fuel. Dual-fuel engines, which run on gas or on liquid fuel, are presented through type designations and technical descriptions in the companies’ own terms.

Two other features recur. Service network maps and location finders show where parts and field engineers can be found; Everllence speaks of more than 140 service locations, and WinGD runs a lifecycle-support arm under its own name. Heritage timelines, meanwhile, tie current engines to Rudolf Diesel, whose engine was developed with MAN in Augsburg in the 1890s and licensed to Sulzer in Winterthur, giving the oldest names in the field more than a century of dates to show.

One name over trucks, yachts and forklifts.

Weichai now presents itself as a group with seven business segments: powertrains, commercial vehicles, farm equipment, construction machinery, intelligent logistics, marine mobility, and energy and power. Its website lists subsidiaries including Weichai Power, Shacman, Weichai Lovol, Fast Transmission, Torch spark plugs, Ferretti, Baudouin, Dematic and the German forklift group KION, in which, English Wikipedia says, Weichai agreed to buy a 25 percent stake in 2012 that rose to 38.25 percent by 2016. The company says it has about 110,000 employees and exports to more than 180 countries and regions, and it names national research platforms such as a State Key Laboratory of Engine and Powertrain System among its facilities.

Its public profile has grown with the group. China Daily reported that Weichai Power entered the Fortune Global 500 for the first time in August 2021, at 425th place, and English Wikipedia notes that it sponsored the Scuderia Ferrari Formula One team from 2013. English Wikipedia also lists overseas research and testing centres in Wiesbaden, Forlì, Cassis, Chicago, Singapore and Pune. The company’s motto, “Green Power, International Weichai,” appears on its product site, and its marine engine pages are built around published power and speed ranges.

For a design guide, Weichai shows how a single engine name can stretch across many kinds of machine while its marine range is still sold through plain specification tables. Compare Baudouin, the French marine engine maker it has owned since 2009, and Yuchai, another Chinese engine maker. For this guide we use a workshop slate, a foundry rust and a harbour sand with a sans, an unofficial interpretation; no product or logo is reproduced.

Keep Weichai’s identity on hand — save it to a board in the Made Good inspiration library.