Two-cycle internal combustion engine with reduced unburned hydro

Details Two-cycle internal combustion engine with reduced unburned hydro Two-cycle internal combustion engine with reduced unburned hydro

1993-03-30

1995-02-14

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123169EC, 123561, 123674, F02B 2300, F02P 100

Patent

active

053885619

ABSTRACT:
A new two-cycle internal combustion engine configuration and control strategy in which the unburned hydrocarbon emissions are measured in the exhaust manifold during the scavenging process using a fast response air fuel sensor. The signal from the sensor is used to control the operation of a low pressure ratio blower and the inlet fuel and oil flow. In this way the inlet flow of fuel and air may be reduced which controls the short circuiting loss of fuel during the scavenging process and reduces unburned hydrocarbons in the exhaust gas.

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