Exhaust heated induction air for two-cycle engine

Details Exhaust heated induction air for two-cycle engine Exhaust heated induction air for two-cycle engine

1988-02-26

1989-07-11

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Heating of combustible mixture

F02M 3114

Patent

active

048461369

ABSTRACT:
Intake air to the carburetor of a two-cycle engine is preheated by ducting ambient temperature outside air past hot engine surfaces. Preferably, a portion of the intake air duct includes a heat exchanger formed integrally with the outer wall of the engine exhaust manifold. The use of heated intake air enhances idle and low speed operation of the engine by reducing or eliminating fuel puddling and by narrowing the temperature range used for carburetor calibration.

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