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Power supply system for automobile

An electric power supply and electric power technology, applied in the field of electric power supply system, can solve the problems of reduced engine start-up efficiency, adverse effect of efficiency, etc.

Active Publication Date: 2007-08-01
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Thus, the efficiency of the electric power supply to the electronic controller for starting the engine is adversely affected, and the efficiency of engine starting is reduced

Method used

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  • Power supply system for automobile
  • Power supply system for automobile
  • Power supply system for automobile

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Embodiment Construction

[0014] A first embodiment of the present invention will be described with reference to FIGS. 1-3. First, referring to FIG. 1, the overall structure of the engine control system will be described. An intake pipe 11 and an exhaust pipe 12 are connected to the engine 10 . A fuel injector 13 is arranged in the intake pipe 11 . Fuel in the fuel tank 14 is sucked by the in-tank fuel pump 15 and pressurized to a predetermined fuel pressure. The pressurized fuel is provided to fuel injector 13 . A spark plug 16 is installed in a cylinder head of the engine 10 , and a high voltage is supplied to the spark plug 16 from an ignition device 17 . Fuel injected into engine 10 is ignited by spark plug 16 .

[0015] An electronic control unit 30 (referred to as an ECU) controls the operation of the engine 10 . Various signals such as the rotational speed of the engine 10 and the engine load are fed to the ECU 30 from respective sensors. The ECU 30 detects the operating state of the engin...

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Abstract

An electricity supply system is mounted on vehicle such as motorbicycle. The electricity supply system includes an electric generator 20 drived by a motor 10, onboard battery 24, and electric load, such as spark plug 16 and fuel injector 13. In order to start the motor 10, checking battery voltage, opening charged circuit for the battery 24 when the voltage is lower than preset level. Through initial rotation of the motor 10, generating electric power in the electric generator 20 for providing exculsively to the electric load to start successfully the motor 10. After the electric power generated in the electric generator 20 gets to enough high level, the battery 24 is charged by the electric power generated in the electric generator 20.

Description

technical field [0001] The invention relates to an electric power supply system mounted on a motor vehicle. Background technique [0002] In a motorcycle, the on-board electronic controller is powered by the on-board battery, and the engine is started according to the start of operation of the electronic controller. After the engine is started, it drives a generator, and the electricity generated by the generator is supplied to the electronic control unit. Electricity generated by the generator is also provided to the battery to charge the battery. The generator is successfully started by the battery in this way when the battery voltage is sufficiently high. [0003] When the battery voltage is not high enough, the engine cannot be started by the power supply from the battery. Accordingly, the engine is started in a kick start manner, and the operation of the electronic control unit is started by supplying electric power generated by the generator driven by the engine. H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/02H02J7/14F02B63/04F02N11/08F02M51/06H02P9/00
CPCY02T10/642Y02T10/7005
Inventor 大河内康宏
Owner DENSO CORP
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