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Engine automatic stop and start device, and engine automatic stop and start control method

一种自动停止起动、自动停止的技术，应用在发动机用电动机起动、发动机控制、发动机的起动等方向，能够解决无法啮合等问题，达到安静啮合的效果

Inactive Publication Date: 2013-10-09
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, on the other hand, there is also the problem of not being able to engage until the engine has come to a complete stop

Method used

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  • Engine automatic stop and start device, and engine automatic stop and start control method
  • Engine automatic stop and start device, and engine automatic stop and start control method
  • Engine automatic stop and start device, and engine automatic stop and start control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0029] figure 1 It is a block diagram showing a schematic configuration of the engine automatic stop and start device according to Embodiment 1 of the present invention. figure 1 The engine automatic stop-start device 10 in the first embodiment shown includes a starter control unit 11 , a ring gear 12 , a crank angle sensor 13 , a starter motor 14 , a one-way clutch 15 , a pinion 16 , and a pinion moving unit 17 And constitute. In addition, the pinion moving unit 17 includes a solenoid 18 and a piston 19 .

[0030] The starter control unit 11 controls energization to the starter motor 14 and the solenoid 18 . Also, the ring gear 12 meshes with the pinion gear 16 to transmit driving force to the engine. In addition, the crank angle sensor 13 detects the crank angle of the engine. In addition, starter motor 14 rotates pinion 16 when energized.

[0031] In addition, the one-way clutch 15 is connected to the output shaft of the starter motor 14 and performs idle rotation when...

Embodiment approach 2

[0069] In the previous embodiment 1, for Figure 4 As shown, the case where energization to the starter motor 14 is temporarily stopped (corresponding to step S143 ) and energization to the solenoid 18 is started (corresponding to step S144 ) during the meshing control has been described. On the other hand, in the second embodiment, after the energization to the starter motor 14 is temporarily stopped, the energization to the solenoid 18 is started according to whether or not the solenoid energization condition (equivalent to the pinion movement condition) is satisfied. The situation will be explained.

[0070] Figure 7 It is a flowchart showing the flow of the meshing control when the engine is automatically stopped according to Embodiment 2 of the present invention. If compared with the previous embodiment 1 Figure 4 Compared with the flow chart of the present embodiment 2, the Figure 7 The difference in the flow chart of is that step S147 is newly inserted between st...

Embodiment approach 3

[0085] In Embodiment 1 and Embodiment 2 above, the case where the voltage is restored by temporarily stopping the energization to the starter motor 14 (or suppressing the current by PWM control or the like) has been described. On the other hand, in this Embodiment 3, the case where the voltage applied to the solenoid 18 is made to be more than a desired value by another method is demonstrated.

[0086] Although not shown in the figure, the engine automatic stop and start device 10 according to Embodiment 3 further includes a current suppressing circuit, a short-circuit circuit, and a switching unit. Here, the current suppression circuit corresponds to a resistor, a coil, or the like provided between the power supply and the starter motor 14 .

[0087] The short circuit corresponds to a circuit that short-circuits the current suppression circuit. Furthermore, the switching means corresponds to means for switching whether or not to short-circuit the current suppression circuit ...

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PUM

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Abstract

Provided is a device for automatically stopping an engine when an automatic stop condition is satisfied and restarting the engine thereafter when a restart condition is satisfied, the device including: a ring gear (12) to be coupled to a crankshaft of the engine; a starter motor (14) for starting the engine; a pinion gear (16) for transmitting rotation of the starter motor to the ring gear; pinion-gear moving means (17) for moving the pinion gear by energization to bring the pinion gear into meshing engagement with the ring gear; and starter control means (11) for controlling a voltage to be applied to the pinion-gear moving means so as to fall within a predetermined range when the pinion gear and the ring gear are brought into meshing engagement by moving the pinion gear by the pinion-gear moving means.

Description

technical field [0001] The present invention relates to an engine automatic stop and start device and an engine automatic stop and start control method used in an automatic idle stop system. In the automatic idle stop system, when a predetermined automatic stop condition is established, the engine is automatically stopped, and then the engine is automatically stopped. When the restart condition is met, the engine is restarted. Background technique [0002] Conventionally, for the purpose of improving the fuel consumption efficiency of automobiles and reducing environmental loads, an automatic idling stop system that automatically stops idling when predetermined conditions are satisfied has been developed. Among them, the automatic idling stop system using the starter requires less changes to the vehicle system, and the cost is lower. On the other hand, however, there is also the problem of not being able to engage until the engine has come to a complete stop. [0003] To s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N11/08F02D29/02F02N15/00
CPCF02N11/0803F02N11/0851F02N11/0844F02D29/02F02N11/0855
Inventor 北野弘明水野大辅龟井光一郎小田原一浩
Owner MITSUBISHI ELECTRIC CORP
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