1977-02-01

An Update of the Direct Injected Stratified Charge Rotary Combustion Engine Developments at Curtiss-Wright 770044

Development progress of the unthrottled direct injected Stratified Charge Rotary Combustion Engine Program at the Curtiss-Wright Corporation is updated since the 1974 status reported in SAE Paper 741206. Emphasis during this period has been on performance improvements in the automotive road load range. Results are given for a number of variations tested since that date, including engine performance with gasoline and other fuels. The baseline configuration has been further improved and new designs which have improved fuel consumption and reduced hydrocarbon emissions are described in the paper. These data are presented showing steady-state SFC equal or better than representative automotive diesel engines; comparable untreated emission data are presented with HC emissions reduced to a representative band level of automotive carbureted engines and with relatively low CO and NOx.

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