Nissan Motor Company Limited

Masahiko Yuuya

Shouta Hamane

Takatsugu Katayama

Hidehiro Fujita

Naoki Osada

Yoshitaka Matsuki

Atsushi Mitsuhori

Tadanori Yanai

In one aspect, an internal combustion engine includes a fuel injector for injecting fuel into a combustion chamber to produce an air-fuel mixture in the combustion chamber, a spark plug for igniting the air-fuel mixture to cause combustion in the combustion chamber and a controller controls the spark plug to cause combustion in the combustion chamber to apply a torque to start the engine from a stopped condition. The controller determines whether the operation of the engine will be stopped, and adjusts an operating condition of the engine if the controller determines the engine operation will be stopped.

Starting system for internal combustion engine

Embodiments are disclosed to reliably carry out engine starting without cranking. Using an internal combustion engine, when an idle stop condition is established, a third path switching valvethat is provided at the connection of the compressed air supply pathand a first blow-by path, and a blow-by control valveare 'closed'. The connection of the crankcase to the inlet pathis blocked, idling for a designated time is carried out, and finally the engine is stopped. On the other hand, when the idle stop release condition is established, an inlet valveis 'opened', and the first to third path switching valvestoare &#x201c;closed&#x201d;, thereby operating a compressorfor a designated period of time. Compressed air is thereby supplied to the combustion chamberand the crankcase via the compressed air supply path, allowing an increase in the internal cylinder pressure. Finally, the engine is started.

Internal combustion engine and control method thereof

A starting system rotates and starts an internal combustion engine by injecting fuel into a predetermined cylinder using an injector and igniting the fuel using an ignition plug, and upon starting the engine, the fuel pressure supplied to the injector is detected, and the engine is started by combustion in the predetermined cylinder only when the detected pressure is at or greater than the predetermined pressure, thereby guaranteeing the fuel pressure when combustion starting is employed, and consequently the engine can be securely started. In operation, the present starting system rotates and starts the engine by injecting the fuel into a predetermined cylinder using the injector and igniting the fuel using the ignition plug, and upon starting the engine, the fuel pressure supplied to the injector is detected, and the engine is started by combustion in the predetermined cylinder only when the detected pressure is at or greater than the predetermined pressure, thereby guaranteeing the fuel pressure when combustion starting is employed, and consequently the engine can be securely started.

Starting device for internal combustion engine

Growing community of inventors

Kanagawa, Japan

Masahiko Yuuya