Patent ID: 6286492
Filing Date: 2001-09-11
Classification: F02D

Abstract:
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.