[특허]Electric continuously variable transmission and controls for operation of a heat engine in a closed-loop power-control m

Electric continuously variable transmission and controls for operation of a heat engine in a closed-loop power-control m 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02P-007/67
출원번호	US-0023537 (1993-02-26)
발명자 / 주소	King Robert D. (Schenectady NY)
출원인 / 주소	General Electric Company (Schenectady NY 02)
인용정보	피인용 횟수 : 101 인용 특허 : 0

초록 ▼

A heat engine operates an alternator that supplies electrical power to an electric continuously variable transmission for driving at least one ac motor through a differential to multiple wheels or to multiple independent ac wheel motors in an automobile, bus or truck. A heat engine control operates in a closed-loop power mode and decouples heat engine speed from motor speed, allowing the heat engine to produce required power at an operating speed and throttle position, or fuel injector duty cycle, that maximizes fuel economy and minimizes engine emissions. An energy storage unit (e.g., a battery, flywheel, ultracapacitor, superconducting magnetic energy storage device, or combination thereof) provides electrical energy to the electric drive system during vehicle accelerations and further reduces peak power demands on the heat engine. Advantageously, energy is recovered during vehicle deceleration and braking; and the recovered energy is used to recharge the energy storage unit. Emissions during cold starting and idling are minimized by a closed-loop temperature-controlled catalyst electric heater which is operated by the battery or the alternator.

대표청구항 ▼

An electric continuously variable drive system, comprising: an ac motor; input means for receiving an operator command, said operator command being converted to a torque command for determining the torque output of said motor; an alternator for supplying electrical power to said ac motor via a rectifier and an inverter, said alternator being controlled by an alternator power command and operating in a closed-loop power mode within a normal operating range for said alternator; a heat engine for driving said alternator, said heat engine operating in a closed-loop power mode; heat engine control means for electronically controlling said heat engine via an injector duty cycle command or a throttle position command; torque feedback means for measuring actual torque produced by said ac motor; motor speed feedback means for measuring motor speed; heat engine speed feedback means for measuring heat engine speed; means for deriving a motor power command from said torque command and said motor speed; means for deriving a heat engine power command from said motor power command; heat engine power computation means for computing actual heat engine power from said heat engine speed and said injector duty cycle command or said throttle position command; comparison means for comparing said heat engine power command to the actual heat engine power and generating a difference signal therefrom; and heat engine operating point command means for receiving said heat engine power command, said difference signal and said heat engine speed and providing an operating point signal to said heat engine control means to control said heat engine in order to minimize fuel usage and emissions thereby.

이 특허를 인용한 특허 (101)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Electric continuously variable transmission and controls for operation of a heat engine in a closed-loop power-control m 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

이 특허를 인용한 특허 (101)

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연합인증

Electric continuously variable transmission and controls for operation of a heat engine in a closed-loop power-control m 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허를 인용한 특허 (101)

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