1974-02-01

The Volkswagen PCI Stratified Charge Concept-Results from the 1.6 Liter Air Cooled Engine 741173

The Volkswagen prechamber injection stratified charge concept has a divided combustion chamber with part of the fuel injected into the prechamber and the intake manifold. Various combustion chamber configurations have been investigated in single-cylinder engine tests, and their applicability to the four-cylinder engine is discussed.The development of the third-generation 1.61 air-cooled opposed cylinder engine, along with its mechanical fuel injection system, is described.Engine maps of the prechamber injection engine are discussed, and engine performance data are specified. Test results on the dynamometer show very low nitrogen oxide emissions with fuel economy not impaired; however, hydrocarbon emissions without aftertreatment are still unsatisfactory.

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