Driving system with engine starting control
Patent 5909720 Issued on June 8, 1999. Estimated Expiration Date: 
April 21, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 21, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesControl system for an internal combustion engine with associated decompression device Patent #: 5632238 InventorsAssigneeApplicationNo. 845170 filed on 04/21/1997US Classes:123/179.3, Condition responsive control of starting device123/182.1, Compression relieving type180/65.2Combined with nonelectric drive meansExaminersPrimary: Argenbright, Tony M.Attorney, Agent or FirmForeign Patent References
International ClassesF02D 013/02B60K 006/00 B60L 011/00 Foreign Application Priority Data1996-07-18 JPAbstractIn 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. | |
