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Automatic engine stopping/restarting device

An automatic stop, engine technology, applied in the direction of engine starting, engine motor starting, engine components, etc., can solve problems such as delays, and achieve the effects of reducing fuel consumption, reducing noise, and increasing frequency

Inactive Publication Date: 2015-04-29
HITACHI AUTOMOTIVE SYST LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, Patent Document 1 describes that, as an operation at this time, the timing of turning on (ON) the contact of the electric motor of the starter is delayed by a certain time with respect to the timing of the operation (timing) of the means for pushing out the pinion.

Method used

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  • Automatic engine stopping/restarting device
  • Automatic engine stopping/restarting device
  • Automatic engine stopping/restarting device

Examples

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Embodiment Construction

[0031] Hereinafter, an embodiment will be described with reference to the drawings.

[0032] figure 1 It is a figure which shows the structure of the engine automatic stop restart apparatus in the 1st Example in this invention. The starter 1 is attached to a cylinder block (not shown) of the engine, and is connected to the battery 3 through wiring. When the electric motor 4 is energized, a rotational force is transmitted through the output shaft 5 to rotate a pinion 7 integrally formed with a one-way clutch 6 . The ring gear 8 is directly connected to a crankshaft (not shown) of the engine, and when the ring gear 8 meshes with the pinion gear 7, the power of the electric motor 4 is transmitted. When the pinion gear 7 is engaged, any one or both of the electromagnetic coils 17, 18 in the electromagnetic switch 11 is energized to generate a magnetic attraction force, thereby attracting the plunger (plunger) 15, through the shift lever ( shift lever) 9 to transmit its action t...

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Abstract

The objective of the present invention is to enable an engine to be restarted quickly while preventing the generation of noise due to the failure of a pinion to engage, in a system wherein an engine that is in the process of stopping is restarted by engaging the pinion. In this automatic engine stopping / restarting device, which automatically stops and restarts an engine while the engine is operating, and which performs a control when the engine is restarted whereby a starter pinion is pushed out and the pinion engages a ring gear directly connected to the crankshaft of the engine, thereby restarting the engine by means of the starter, the rotational speed of the engine is determined, and when the rotational speed is greater than a threshold value, a control is performed whereby the starter motor is energized, and when the rotational speed is equal to or less than the threshold value, the motor is energized only when the pinion has engaged the ring gear.

Description

technical field [0001] The invention relates to a device for automatically stopping and restarting an engine. Background technique [0002] In the idle stop system, when the engine is automatically stopped, the engine stop operation is started based on the judgment of the system side without depending on the driver's direct operation. Therefore, during the automatic stop, the condition of the driver changes, and there may be a need to immediately operate the engine. In response to the driver's restart request, the idle stop system is required to restart the engine without noticeable delay. The most stringent condition for satisfying this condition is that a request to restart the engine is generated immediately after the automatic stop operation is started. In existing restarting systems using pinion-engagement starters, the engine needs to wait for a moment to come to a complete standstill in order for the starter pinion to engage the engine ring gear. This is because, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N11/08
CPCF02N11/0844F02N11/0855F02N2200/022F02N2300/2002Y02T10/40F02N15/067
Inventor 西冈明城吉宏泰中里成纪小俣繁彦渡部真德
Owner HITACHI AUTOMOTIVE SYST LTD
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