초록 ▼

A fuel injection timing control system for diesel engines operating at high altitude includes a barometric sensor coupled to an altitude timing controller, and a throttle position sensor coupled to the engine and the altitude timing controller. The altitude timing controller adjusts fuel injection t

A fuel injection timing control system for diesel engines operating at high altitude includes a barometric sensor coupled to an altitude timing controller, and a throttle position sensor coupled to the engine and the altitude timing controller. The altitude timing controller adjusts fuel injection timing in response to the sensed pressure and sensed throttle position by advancing or retarding fuel injection timing by predetermined values as barometric pressure and/or throttle position changes. The predetermined values are selected to reduce exhaust emissions and/or increase engine efficiency and performance under various barometric pressure conditions so that the engine may be operated continually and optimally under various barometric conditions.

대표청구항 ▼

[ What is claimed is:] [1.]1. A fuel injection control system for a medium-speed compression ignition diesel engine for powering a railroad locomotive, the engine including at least one power cylinder, at least one fuel injection pump and at least one fuel injector connected to said fuel injection p

[ What is claimed is:] [1.]1. A fuel injection control system for a medium-speed compression ignition diesel engine for powering a railroad locomotive, the engine including at least one power cylinder, at least one fuel injection pump and at least one fuel injector connected to said fuel injection pump for injecting fuel into said at least one cylinder, said fuel injection control system comprising:an altitude timing controller connected to said fuel injection pump and fuel injector, said altitude timing controller being programmed to advance ignition timing upon an increase in altitude to increase peak firing pressure in said at least one cylinder to a pressure near the design maximum firing pressure to maintain a desired engine power output, by advancing the time at which to begin fuel injection into the cylinder; anda barometric pressure sensor coupled to said altitude timing controller, to provide a signal indicative of increased altitude to said altitude timing controller.