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Engine start system for use in idle stop system for automotive vehicle

一种发动机起动、发动机的技术，应用在发动机的起动、发动机用电动机起动、机器/发动机等方向，能够解决难于实现小齿轮与齿圈啮合等问题，达到消除监测小齿轮的转速的需要、结构简化、消除监测小齿轮转速的需要的效果

Active Publication Date: 2010-05-19
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, the system prohibits the meshing of the pinion and the ring gear in the range where the engine rotates in reverse, thus making it difficult to achieve meshing of the pinion and the ring gear in the range where the engine speed oscillates

Method used

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  • Engine start system for use in idle stop system for automotive vehicle
  • Engine start system for use in idle stop system for automotive vehicle
  • Engine start system for use in idle stop system for automotive vehicle

Examples

Experimental program
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Embodiment Construction

[0073] Referring to the drawings, in which like reference numerals designate like parts in the different views, see in particular figure 1 , shows an engine starting system 1 according to a first embodiment of the invention, which is used together with an idle stop system to automatically stop a vehicle engine, for example when the vehicle is stopped at an intersection.

[0074] The engine starting system 1 includes a starter 10 , an electronic control unit (ECU) 20 , two drive relays 31 and 32 , and two diodes 41 and 42 .

[0075] The starter 10 is equipped with a starter motor 11, a relay switch 12 for supplying electric power to the starter motor 11, a pinion 13, and a solenoid serving as an actuator to move the pinion 13 between an engaged position and a disengaged position. tube 14, which will be described in detail later.

[0076] The starter motor 11 is connected at one end thereof to the battery 70 through a relay switch 12 and is grounded at the other end. When the...

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PUM

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Abstract

An engine start system which may be employed in automotive idle stop systems. The engine start system includes a pinion gear to be pushed to a ring gear coupled to an engine for achieving meshing engagement with the ring gear. After the pinion gear engages the ring gear, the engine start system starts to rotate the pinion gear using a starter motor to crank the engine. Specifically, when an engine restart request is made following an engine stop request, the engine start system waits until after the speed of the engine drops below a preselected gear engageable speed and then moves the pinion gear toward the ring gear without rotating the pinion gear. This minimizes the consumption of fuel in the vehicle in supplying electric power to the starter motor and a maximum level of mechanical noise arising from the engagement of the pinion gear with the ring gear.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Japanese Patent Application No. 2008-229885 filed September 8, 2008 and Japanese Patent Application No. 2009-45433 filed February 27, 2009, the disclosures of which are incorporated by reference Incorporated into this article. technical field [0003] The present invention generally relates to an engine starting system (also known as an automatic engine stop / restart system) for use in an idle stop system of a motor vehicle, for example when the vehicle is stopped at an intersection or due to a traffic jam While parking, the vehicle engine is automatically stopped and then restarted when the driver of the vehicle performs a designated starting operation (for example, when the driver's foot is released from the brake pedal). Background technique [0004] There are known automotive idle stop systems designed to automatically stop the engine when engine output is not required and aut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N15/06F02D17/00F02D29/02F02D45/00F02D11/08
CPCF02N15/067F02N11/0844F02N11/0855Y02T10/48Y02T10/40
Inventor 千田崇加藤章奥本和成村田光广新美正巳春野贵誉一
Owner DENSO CORP
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