초록 ▼

A number of embodiments of induction systems for internal combustion engines that permit operation on the Miller cycle without introducing pumping losses or by substantially minimizing the pumping losses. Basically, the system provides a variable volume air chamber that supplies the major portion of

A number of embodiments of induction systems for internal combustion engines that permit operation on the Miller cycle without introducing pumping losses or by substantially minimizing the pumping losses. Basically, the system provides a variable volume air chamber that supplies the major portion of the intake charge or all of the intake charge under low-speed, low-load conditions. Various valving and variable volume chamber constructions are illustrated. In addition, embodiments using air-assisted fuel injection are also disclosed.

대표청구항 ▼

[ We claim:] [1.] An induction system for an internal combustion engine having a combustion chamber with a volume that varies cyclicly during a cycle of engine operating, an intake port for admitting an air charge to said combustion chamber, means for cyclicly opening and closing said intake port fo

[ We claim:] [1.] An induction system for an internal combustion engine having a combustion chamber with a volume that varies cyclicly during a cycle of engine operating, an intake port for admitting an air charge to said combustion chamber, means for cyclicly opening and closing said intake port for controlling the admission of an air charge to said combustion chamber, means defining an air chamber communicating with said intake port for supplying an air charge to said intake port, means for adjusting the effective volume of said air chamber in response to the operator demand and the load on said engine during at least a range of operation of said engine for controlling the volume of air which is supplied to said combustion chamber from said air chamber during a single intake cycle, and control valve means for communicating atmospheric air to said air chamber during the portion of the engine cycle when said intake port is closed.