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Electric power steering controls for vehicles

A technology of electric power steering and control device, applied in power steering mechanism, steering mechanism, vehicle components, etc., can solve problems such as deteriorating steering performance, and achieve the effect of avoiding restrictions and ensuring steering performance

Active Publication Date: 2017-01-04
MITSUBISHI MOTORS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] If control is performed not to perform assist of the steering torque when the engine is automatically stopped during low-speed travel, the steering torque cannot be assisted although the vehicle is traveling, possibly deteriorating the steering performance

Method used

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  • Electric power steering controls for vehicles
  • Electric power steering controls for vehicles
  • Electric power steering controls for vehicles

Examples

Experimental program
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Effect test

Embodiment Construction

[0025] Embodiments of the present invention will be described below with reference to the drawings.

[0026] figure 1 is a block diagram showing a schematic configuration of an electric power steering device 1 for a vehicle according to an embodiment of the present invention.

[0027] The vehicle according to the present embodiment includes an idling stop device 2 (an idling stop control section during traveling and an idling stop control section during parking).

[0028] As a known idle stop device, when a predetermined idle stop condition (stop condition during parking or stop condition during travel) is satisfied, for example, when the vehicle stops at an intersection while the vehicle is traveling, the idle stop device 2 automatically stops the engine 3 operations. Thereafter, when a predetermined restart condition is satisfied, the idling stop device 2 restarts the engine 3, and starts the vehicle.

[0029] As the idling stop condition, vehicle speed V (travel speed of...

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PUM

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Abstract

In a vehicle including an idle stop device (2) that automatically stops an engine (3) when predetermined stop conditions including a condition that vehicle speed V is larger than 0 and equal to or lower than predetermined speed V1 hold and an electric power steering device (1), an assist current upper limit value Iah equivalent to an upper limit value of an assist amount in the electric power steering device (1) is set to 0 when the vehicle speed V is 0, the assist current upper limit value Iah is set to a first upper limit value Iah1 larger than 0 when the vehicle speed V is higher than the predetermined speed V1, and, when the engine (3) is automatically stopped by the idle stop device (2), the assist current upper limit value Iah is set to a third upper limit value Iah2 between 0 and the first upper limit value Iah1 when the vehicle V is larger than 0 and equal to or lower than the predetermined speed V1.

Description

technical field [0001] The present invention relates to a control technique for an electric power steering device in a vehicle including an idle stop device. Background technique [0002] There is known an idle stop device for improving the gas mileage of an automobile, which automatically stops the operation of the engine when stopping travel at an intersection or the like. [0003] The idling stop device is a device that automatically stops idling of the engine when the driving state of the vehicle satisfies a predetermined stop condition, and thereafter restarts the engine and starts the vehicle when a predetermined start condition is satisfied. [0004] In recent years, the number of vehicles including an electric power steering device that performs assistance of a steering torque of the steering device with an electric motor has increased. Generally, such an electric power steering apparatus performs control to suppress power consumption during engine stop, without per...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W10/20B60W10/06
CPCB62D5/0481F02N11/084F02N2200/0808B60W10/06B60W10/20B60W30/18018B60W30/18054B60W2520/10Y02T10/40
Inventor 山中裕基儿玉哲也忠田诚司
Owner MITSUBISHI MOTORS CORP
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