초록 ▼

An engine includes an electronic controller which samples the pressure in the induction system once per rotation of the crankshaft. The controller is configured to determine the minimum voltage signal output by the pressure sensor. The controller then uses the minimum pressure sensed by the pressure

An engine includes an electronic controller which samples the pressure in the induction system once per rotation of the crankshaft. The controller is configured to determine the minimum voltage signal output by the pressure sensor. The controller then uses the minimum pressure sensed by the pressure sensor to control the fuel injection of the engine. The controller may include two and/or three dimensional maps for predicting the appropriate timing for sampling the pressure sensor. Optionally, the controller may include a bottom hold device for holding a minimum value of the signal output from the pressure sensor, thus corresponding to the minimum pressure sensed by the pressure sensor.

대표청구항 ▼

[ What is claimed is:] [1.]1. A engine comprising an engine body defining at least one combustion chamber therein, a crankshaft rotatably journaled at least partially within the engine body, an induction system configured to guide induction air into the combustion chamber, a pressure sensor configur

[ What is claimed is:] [1.]1. A engine comprising an engine body defining at least one combustion chamber therein, a crankshaft rotatably journaled at least partially within the engine body, an induction system configured to guide induction air into the combustion chamber, a pressure sensor configured to detect a pressure in the induction system and to output a signal indicative of the pressure detected, a charge former configured to supply a fuel charge to the combustion chamber, an engine speed sensor configured to detect rotation of the crankshaft, a memory containing data regarding a relationship between a plurality of peak positions of the crankshaft, a plurality of engine speeds, and a plurality of values of an engine operation characteristic other than engine speed, wherein the peak positions correspond to a position of the crankshaft when an induction air pressure in the induction system is at a substantially minimum value, and a controller configured to sample the output from the pressure sensor when the crankshaft is approximately at the peak position.