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Engine starting device

A technology of engine starting and engine, applied in the direction of engine starting, engine motor starting, engine components, etc., can solve the problems of energy consumption, accelerated starter deterioration, etc., and achieve the effect of noise reduction

Active Publication Date: 2014-09-24
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Same as below) In addition to applying a large calculation load, even if the pinion rotation speed is synchronized without energizing the starter, the starter motor is still energized when the engine speed rises and the fuel supply is resumed to enable restarting, so there is a loss of power consumption. The necessary energy accelerates the problem of deterioration of the starter

Method used

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Experimental program
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Effect test

Embodiment approach 1

[0029] figure 1 It is a block diagram showing a schematic configuration of the engine starting device according to Embodiment 1 of the present invention. exist figure 1 In this process, the engine ECU 10 judges whether the idling stop condition (for example, the vehicle speed is below 5 km / h and the driver steps on the brakes, etc.) is satisfied, and inputs the result to the controller 13 of the engine starter 20 . The engine starting device 20 includes: a ring gear 11 connected to a crankshaft of an engine (not shown); a crank angle sensor 12 that detects the crank angle of the engine; a starter 19; The controller 13. The starter 19 includes: a pinion 14 transmitting the rotation of the starter motor 17; an iron core 15 for moving the pinion 14 and meshing with the ring gear 11; and a solenoid 16 capable of moving the iron core 15 by energization. and a pinion speed sensor 18 capable of detecting the speed of the pinion 14 . Control of energization by the controller 13 ca...

Embodiment approach 2

[0066] Figure 8 It is a block diagram showing a schematic configuration of an engine starting device according to Embodiment 2 of the present invention. exist Figure 8 The engine starting device includes an air flow sensor (air intake detection means) 23 that detects the amount of intake air sucked into the engine, and the engine speed Nr that determines the dead zone in Embodiment 1 may be set based on the intake air amount. 1 , Nr 2 , Nr 3 , Nr 4 . exist Figure 8 In , the controller is denoted as controller 24.

[0067] Figure 9 Shows the engine speed reduction characteristics due to the difference in the intake air amount during the engine coasting at idling stop. Such as Figure 9 As shown, the expansion and compression torques vary according to the intake air volume, and the larger the intake air volume, the greater the expansion and compression torque, and the greater the pulsation of the engine speed. Therefore, for example, when the inhalation amount dete...

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Abstract

Provided is an engine starting device enabling the meshing engagement of a pinion gear and a ring gear to be quickly and quietly achieved in an automatic idle-stop system while an engine is rotating by inertia. The engine starting device includes: a ring gear connected to a crankshaft of an engine; a starter motor for starting the engine; a pinion gear for transmitting rotation of the starter motor to the ring gear; pinion-gear moving portion for moving the pinion gear so as to achieve meshing engagement with the ring gear; and starter control portion for executing any one of a plurality of control modes.

Description

technical field [0001] The present invention relates to an engine starting device for an automatic idling stop system for performing an idling stop of an engine when a predetermined idling stop condition is met, and then restarting the engine when a restarting condition is met. Background technique [0002] Conventionally, an automatic idling stop system has been developed that automatically stops idling when predetermined conditions are satisfied for the purpose of improving fuel consumption of motor vehicles, reducing environmental load, and the like. For example, in the method and starter control device for engaging a starter pinion with a ring gear, there is a method for engaging the pinion with the ring gear when the rotation speed of the ring gear is within a prescribed range and the direction of rotation is positive. , a technical solution to realize the meshing state of the pinion gear and the ring gear in advance (refer to Patent Document 1). [0003] In addition, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02N11/08F02D29/02F02D41/06F02D41/18F02N15/00
CPCF02N11/0814F02N11/0844F02N2300/2002F02N11/0818F02N11/0855Y02T10/48Y02T10/40F02N15/067F02N2200/022
Inventor 北野弘明栗重正彦龟井光一郎小田原一浩金田直人
Owner MITSUBISHI ELECTRIC CORP