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Similarly engine oil viscosity and cleanliness is a factor. Use of the incorrect oil type, i.e. SAE 10W40 instead of SAE 5W30, or the failure to change the engine oil or oil filter at factory recommended intervals, can also significantly impair system performance. [citation needed] In 2001, GM showcased the 2002 Cadillac Cien concept car, which ...
Maintaining oil and coolant levels was crucial for the engine. The engine was equipped with an oil pressure switch which grounds out the primary-ignition system should the oil pressure fall below 6 psi (0.41 bar) during operation, stopping the engine and preventing it from being restarted until the oil level was replenished or the mechanical ...
The engines were also sold for marine and stationary applications. In a 1938 reorganization, Winton Engine Corporation became the GM Cleveland Diesel Engine Division, and GM's Detroit Diesel Engine Division began production of smaller (50–149 cu in (0.8–2.4 L) per cylinder) diesel engines. Locomotive engines were moved under the GM Electro ...
General Motors (GM) was founded in September of 1908. On June 1, 2009, at 8 a.m. -- almost 101 years later -- it ceased to exist, and control was handed over to turnaround executive Al Koch ...
The system operates through controlling the flow of hydraulic engine oil pressure to locking mechanisms in the cam followers. The engine's drive by wire throttle allows the engine management computer to smooth out the engine's power delivery, making the system nearly imperceptible on some vehicles. When the VCM system disables cylinders, an ...
In a collision in which two young women in a Chevrolet Cobalt were killed when the ignition switch shut off the engine, GM only counted the death of the woman in the front seat, because the death of the woman in the back seat was not caused by the failure of the airbag to deploy. [16] Most of the victims were under age 25. [17]
This system consists of an electrically driven water pump and a 3-way rotary valve which allows the engine to maintain proper operating temperatures and quicker warm-ups. Also, a continuously variable oil pump helps to lower parasitic losses and provide proper lubrication and cooling to the engine, especially under high-load conditions. [1]
Additionally, the vapor pressure of modern pump gasoline may not be appropriate to prevent percolation in the Ramjet fuel distribution spider. [5] The cranking signal valve was also the source of reliability issues. It was intended to pass a certain maximum vacuum signal that would be used for fueling during cranking (i.e. before engine start).