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Texaco's Stratified Charge Engine - Multifuel Efficient, Clean, and Practical

1974; Linguagem: Inglês

10.4271/740563

2688-3627

M. Alperstein, G. H. Schafer, F. J. Villforth,

Rocket and propulsion systems research

Fuel economy and exhaust emission results are presented for Texaco's stratified charge engine combustion concept, the Texaco Controlled-Combustion System (TCCS), which was tested on M-151 army vehicles, one having a naturally aspirated L-141 TCCS engine and the other having a turbocharged L-141 TCCS engine. The TCCS conversions result in inherently low exhaust emissions, multifuel capability, and improved fuel economy over the normally carburetted L-141 gasoline engine. Promulgated federal gaseous exhaust emission standards can be met with the naturally aspirated TCCS engine-powered M-151 vehicle equipped with exhaust gas recirculation and a Texaco-developed exhaust catalyst. Environmental Protection Agency test results for average hydrocarbon, carbon monoxide, and nitrogen oxide emissions from the naturally aspirated TCCS engine are 0.30, 0.67, and 0.34 gpm, respectively, after 50,000 miles. Average emissions of hydrocarbons, CO, and NOx for the turbocharged TCCS engine with full emission controls are 0.35, 1.41, and 0.35 gpm, respectively. Data are also provided for emissions under varying degrees of control.