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The goal of EGR is thus to reduce NO x production by reducing the combustion temperatures. In modern diesel engines, the EGR gas is usually cooled with a heat exchanger to allow the introduction of a greater mass of recirculated gas. However, uncooled EGR designs do exist; these are often referred to as hot-gas recirculation (HGR).
[77] [full citation needed] In turbocharged engines, EGR needs a controlled pressure differential across the exhaust manifold and intake manifold, which can be met by such engineering as use of a variable geometry turbocharger, [citation needed] which has inlet guide vanes on the turbine to build exhaust backpressure in the exhaust manifold ...
BMW is well known for its history of inline-six (straight-six) engines, a layout it continues to use to this day despite most other manufacturers switching to a V6 layout. . The more common inline-four and V8 layouts are also produced by BMW, and at times the company has produced inline-three, V10 and V12 engines, BMW also engineered non-production customised engines especially for motorsports ...
The BMW Hydrogen 7 is a limited production hydrogen-fueled model. It uses a modified version of the 760Li's N73 V12 engine, producing 191 kW (256 bhp). Claimed fuel economy is 50 L/100 km (4.7 mpg ‑US) and the hydrogen is stored as a liquid in an insulated 170 L (45 US gal) tank. Only 100 cars were made, which were leased to high-profile ...
The BMW 7 Series is a full-size luxury sedan manufactured and marketed by the German automaker BMW since 1977. [1] It is the successor to the BMW E3 "New Six" sedan and is now in its seventh generation. The 7 Series is BMW's flagship car and is only available in a sedan bodystyle (including long wheelbase and limousine models). It traditionally ...
BMW M51 straight-6 engine (shown in an E36 3 Series) The initial diesel models used the BMW M51 turbocharged straight-6 engine carried over from its predecessor. In 1998, its successor the BMW M57 was introduced in the 530d model, however the BMW M51 engine continued to be used for two more years in the 525td and 525tds models.
KGO-TV (channel 7) is a television station licensed to San Francisco, California, United States, serving the San Francisco Bay Area.It has been owned and operated by the ABC television network through its ABC Owned Television Stations division since the station's inception.
The BMW New Class coupé range, which comprised the BMW 2000 C and BMW 2000 CS, was a coupé body style built by Karmann for BMW from the summer of 1965 [1]: 141 [2]: 66–67 to 1969. In 1965, BMW ended production of their Bertone -bodied 3200 CS coupé , the last of their line of V8 powered luxury cars from the 1950s.