Vehicle control apparatus adapted to select engine-or motor-drive mode based on physical quantity reflecting energy conversion efficiencies in motor-drive mode
Patent 5789882 Issued on August 4, 1998. Estimated Expiration Date: 
July 22, 2016. 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.
July 22, 2016. 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 ReferencesHybrid car with electric and heat engine Control apparatus and method for engine/electric hybrid vehicle Motor vehicle driving system Hybrid drive system Hybrid electric vehicle Electric power generation control method in a hybrid vehicle utilizing detected generator output and engine revolutions Operating method for a hybrid vehicle Patent #: 5566774 InventorsAssigneeApplicationNo. 685102 filed on 07/22/1996US Classes:318/148, Alternating-current-motor system180/65.3, With means on vehicle for generating power for the electric motor180/65.4, Generating means is driven by a prime mover290/40C, Control in response to generator and prime mover conditions318/146, Speed of motor or driven device322/14COMBINED CONTROL OF GENERATOR AND DRIVING MEANSExaminersPrimary: Cabeca, John W.Attorney, Agent or FirmForeign Patent References
International ClassH02P 007/66Foreign Application Priority Data1995-07-24 JPAbstractA drive control apparatus for an automotive vehicle having an electric motor and an engine operated by combustion of a fuel, the drive control apparatus including a drive source selecting device for selecting an engine drive mode or a motor drive mode on the basis of a first value in the engine drive mode of a physical quantity relating to a condition of the engine and a second value of the same physical quantity reflecting energy conversion efficiencies of the electric motor, an electric generator and an electric energy storage device during an electricity generating mode. The physical quantity is preferably a fuel consumption amount by the engine. The drive control apparatus may also include an engine output determining device that optimizes the efficiency of the system by determining the output of the engine so as to power the vehicle and also provide surplus power to operate the electric generator and charge the electric energy storage device. An enlarging device may also be included to increase the output of the electric motor to prevent excessive charging of the electric energy storage device.Other References
Field of SearchElectricCombined with nonelectric drive means With means on vehicle for generating power for the electric motor Generating means is driven by a prime mover Control in response to generator and prime mover conditions Engine control Control in response to D. C. generator output Electric-starting motor with generator GENERATOR-FED MOTOR SYSTEMS HAVING GENERATOR CONTROL Automatic generator control and/or with time-delay means Plural electrical conditions Speed of motor or driven device Alternating-current-motor system Control of both the generator and the circuit to the motor Responsive to an additional condition Responsive to speed or rotation phase angle Condition responsive COMBINED CONTROL OF GENERATOR AND DRIVING MEANS DRIVING MEANS CONTROL Electric motor control | |
