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Control device for electric pump

A technology of control device and electric pump, applied in pump control, coolant flow control, engine cooling, etc., can solve the problem that the water pump cannot circulate cooling water, and achieve the effect of improving accuracy

Inactive Publication Date: 2014-10-01
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the electric water pump is locked, that is, when the electric water pump cannot rotate even if it is energized, the water pump cannot circulate the cooling water

Method used

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  • Control device for electric pump
  • Control device for electric pump

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Embodiment Construction

[0012] An embodiment of the present invention will be described with reference to the accompanying drawings. In the following description, the same reference numerals are assigned to the same components. These parts have the same name and function. Therefore, description of these components will not be repeated in detail.

[0013] refer to figure 1 , an engine 100 , a first motor generator 110 , a second motor generator 120 , a power split device 130 , a speed reducer 140 and a battery 150 are mounted on the vehicle. Although a hybrid vehicle will be described as an example in the following description, a vehicle called an "electric vehicle with a range extender" or a "range-extended electric vehicle" may also be used. In addition, a vehicle mounted with only the engine 100 as a drive source or an electric vehicle mounted with only an electric motor as a drive source may be used.

[0014] Engine 100 , first motor generator 110 , second motor generator 120 and battery 150 a...

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Abstract

A control device for an electric pump, the electric pump pumping a cooling medium, the control device includes a controller configured to determine a presence of an abnormality in the electric pump when a temperature of the cooling medium is higher than a threshold value and the electric pump is locked. The threshold value being predetermined as a temperature that is higher than a freezing point of the cooling medium.

Description

technical field [0001] The present invention relates to a control device for an electric pump, and particularly relates to determining whether there is an abnormality in the electric pump. Background technique [0002] Hybrid vehicles and electric vehicles are capable of traveling using an electric motor instead of an engine as a drive source. In this type of vehicle, the driving force of the engine may not be used to drive the water pump for circulating the cooling water. Therefore, electric water pumps are used. When the electric water pump is locked, that is, when the electric water pump cannot rotate even though it is energized, the water pump cannot circulate the cooling water. Therefore, the water pump needs to be repaired. In order to notify the driver that the electric water pump requires repair, it is necessary to detect the lock of the electric water pump. [0003] As a method of detecting the lock-up of the pump, as described in Japanese Patent Application Pub...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01P7/14
CPCF04B49/06F04B17/03F04B49/10F04B2201/0801F04B2205/11
Inventor 多久田记孝比嘉光明吉见政史
Owner TOYOTA JIDOSHA KK