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Stratified Charge Injection for Gas-Fueled Rotary Engines

Abstract: 

A gaseous fuel injector injects fuel directly into a working chamber of a rotary combustion engine after the end of the air intake stroke and early during the compression stroke for providing fuel-charge stratification within the working chamber as the rotor approaches and reaches compression top dead center. This results in an increase in power output and brake thermal efficiency due to reduced displacement of the intake air, reduced exhaust emissions levels due to reduced unburned hydrocarbons along the sides and trailing edge of the rotor, and reduced tendancy for combustion knock due to a non-combustible mixture in the end gas.

Patent Number: 
5,094,204
Date Of Issue: 
03/10/1992
Inventors: 

Steven R. King