Internal combustion engine control for improved fuel efficiency

摘要

A variety of methods and arrangements for improving the fuel efficiency of internal combustion engines based on skip fire operation of the engine are described.

主权项

1. A method of controlling the operation of a vehicle that includes a continuously variable transmission and an engine having at least one least one working chamber, each working chamber being generally arranged to operate in a succession of working cycles, the method comprising:
operating the engine in a skip fire mode that skips the firing of selected skipped working cycles and fires selected active working cycles, wherein an amount of air and fuel that is substantially optimized for fuel efficiency is delivered to the working chambers during the active working cycles; and controlling the continuously variable transmission such that during operation in the skip fire mode the engine operates at a rotational speed that is substantially optimized for fuel efficiency; and whereby when the engine is operated in the skip fire mode, a majority of the active working cycles are operated in a condition that is substantially optimized for fuel efficiency.