Cylinder discrimination device and cylinder discrimination method of engine
AssigneesUnisia Jecs Corporation, Nissan Motor Co., Ltd.
InventorsHirokazu Shimizu, Noriaki Shimizu, Ikuo Morisada, Kenji Manabe
Life of this patent
Estimating the term…
Abstract
An internal combustion engine is equipped with a plurality of cam sensors that output cylinder discrimination signals during every uneven crank angle interval, and specific cylinders are discriminated based on said cylinder discrimination signals output from said plurality of cam sensors. Based on the discrimination result of said specific cylinder and said cylinder discrimination signals from cam sensors, the cylinders other than said specific cylinders are discriminated.
Claims24
A cylinder discrimination device of an engine comprising:
- a plurality of cam sensors for outputting cylinder discrimination signals at every uneven crank angle interval;
- a specific cylinder discrimination unit for discriminating a specific cylinder based on said cylinder discrimination signals output from said plurality of cam sensors;
- and
- a nonspecific cylinder discrimination unit for discriminating cylinders other than said specific cylinder based on the discriminated result of said specific cylinder by said specific cylinder discrimination unit and said cylinder discrimination signals from said cam sensors.
A cylinder discrimination method of an engine comprising the steps of:
- outputting cylinder discrimination signals at every uneven crank angle interval from a plurality of cam sensors;
- discriminating a specific cylinder based on the cylinder discrimination signals output from said plurality of cam sensors;
- and
- discriminating cylinders other than said specific cylinder based on the discriminated result of said specific cylinder and said cylinder discrimination signals from said cam sensors.
Dependencies are inferred from the claim text.