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Engine starting system with high-and low-speed modes of motor operation

An engine starting and engine technology, which is applied to engine starting, engine motor starting, engine components, etc., can solve the problems of increasing the total production cost of the engine starting system, and achieve the effect of eliminating the need and improving the durability.

Active Publication Date: 2011-09-21
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to an increase in the overall production cost of the engine starting system

Method used

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  • Engine starting system with high-and low-speed modes of motor operation
  • Engine starting system with high-and low-speed modes of motor operation
  • Engine starting system with high-and low-speed modes of motor operation

Examples

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Embodiment Construction

[0031] Referring to the drawings, wherein like reference numerals designate like parts throughout the several views, in particular figure 1 , shows an engine starting system 1 according to a first embodiment usable for a motor vehicle.

[0032]The engine starting system 1 includes a starter 2 , a resistor 7 , a motor relay 8 and a controller 10 . The starter 2 is equipped with an electric motor 3 that generates torque and transmits it to a ring gear 5 through a pinion 4 to start an internal combustion engine (not shown) installed in a motor vehicle. The ring gear 5 is mechanically coupled to the output shaft (ie, crankshaft) of the engine. The resistor 7 is used to reduce the current supplied from the battery 6 to the motor 3 through a motor circuit (described later in detail) when the motor 3 needs to be turned on. The motor relay 8 switches between electrical paths to supply current to the motor 3 after turning on the motor 3 bypassing the resistor 7 . The controller 10 ...

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PUM

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Abstract

The invention relates to an engine starting system with high-and low-speed modes of motor operation. An engine starting apparatus includes a first and a second power supply path extending from a battery to an electric motor to start an engine. An electromagnetic switch has main contacts disposed in the first power supply path. A resistor is disposed in the second power supply path. A motor relay has relay contacts disposed in series with the resistor. A controller delays the time when the main contacts are closed to apply a full voltage of the battery to the motor until a given time lag has elapsed after the relay contacts are closed to supply electric current to the electric motor through the resistor. Specifically, when it is required to apply the full voltage to the motor to run the motor at a rated speed, the current does not pass through the relay contacts, thus resulting in no voltage drop, which ensures the stability in starting the engine.

Description

technical field [0001] The present invention generally relates to an engine starting device mountable in a motor vehicle and designed to switch between a first power supply path and a second power supply path in which electrical energy is supplied via a resistor to The engine starter motor is started, and in the second power supply path, after the engine starter motor is started, electric power is not supplied to the engine starter motor through a resistor. Background technique [0002] When a car engine is started using an engine starter equipped with an electric motor, ie, when the motor is turned on by closing a main contact of an electromagnetic switch to supply current from a battery, a strong current called an inrush current usually flows through the motor. This causes a temporary large drop in voltage at the terminals of the battery, which can cause other battery-powered electrical devices installed in the vehicle to shut down, such as indicators or audio players. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N11/08F02N11/00
CPCF02N11/087F02D2400/18F02N2011/0892F02N2250/02
Inventor 铃木佳明
Owner DENSO CORP
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