Method of operating an automotive type internal combustion engin

Details Method of operating an automotive type internal combustion engin Method of operating an automotive type internal combustion engin

1992-02-07

1993-07-06

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

123 52MF, 123 9016, F02M 2507, F02M 3510, F01L 134

Patent

active

052244601

ABSTRACT:
A method of operating an automotive type internal combustion engine to improve the efficiency and power, fuel economy, and emission control is obtained by phase shifting of both the intake and exhaust valve timing schedules or events, coupled with the use of reed valves in each intake port to restrict the backflow of exhaust gases into the intake port, and essentially unthrottled operation except where necessary to maintain engine stability, the reed valves also providing for a controlled internal EGR system. The phase shifting and use of intake reed valves will optimize the intake and exhaust event timing at the four major engine operating conditions of idle speed, part load, and wide open throttle low speed and high speed operation.

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