Driving system with engine starting control

Details Driving system with engine starting control Driving system with engine starting control

1997-04-21

1999-06-08

Argenbright, Tony M.

Internal-combustion engines

Starting device

Condition responsive control of starting device

1231821, 180 652, F02D 1302, B60K 600, B60L 1100

Patent

active

059097205

ABSTRACT:
In the process of starting an engine 150, the structure of the present invention lags an open and close timing of an intake valve 152 of the engine 150, thereby enabling a first motor MG1 mechanically linked with a crankshaft 156 via a damper 157 to motor the engine 150. When the revolving speed of the engine 150 exceeds a specific range that causes a resonance, the open and close timing of the intake valve 152 is returned to an ordinary level, so as to start controls of a fuel supply to the engine 150 and ignition. The lagged open and close timing of the intake valve 152 decreases the effective compression ratio of the engine 150, thus enabling smooth rotations of the engine 150 and reducing the amplitude of the torsional vibrations of the crankshaft 156. This structure enables the revolving speed of the engine 150 to swiftly pass through the specific range that causes a resonance.

REFERENCES:
patent: 5632238 (1997-05-01), Furukawa et al.

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