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  2. GM Ecotec Diesel (1997) - Wikipedia

    en.wikipedia.org/wiki/GM_Ecotec_Diesel_(1997)

    GM referred to many of its diesel engines as Ecotec including the GM Medium Diesel engine (2013 onwards) and the Isuzu-derived Circle L engine. This page describes the SOHC 16 valve turbocharged engines which GM introduced in 1997.

  3. Vaillant Group - Wikipedia

    en.wikipedia.org/wiki/Vaillant_Group

    The history of the Vaillant Group dates back to 1874, when Johann Vaillant set up a master fitter's business. In 1894 Johann Vaillant patented a new "closed-system" gas-fired bathroom boiler. [3] This was the first device that made it possible to heat water hygienically, without contaminating it with combustion gases.

  4. GM E-Turbo engine - Wikipedia

    en.wikipedia.org/wiki/GM_E-Turbo_engine

    The GM E-Turbo engine is a gasoline-fueled engine developed by General Motors as part of the company’s next-generation turbocharged engine family. The engine features a start-stop system, gasoline direct injection, an electric water pump and an electric turbocharger wastegate to optimize fuel efficiency.