A cooling system fault monitoring method and device
A cooling system and fault monitoring technology, which is applied to the cooling combination arrangement of the power unit, signal device, power unit, etc., can solve the problem that the cooling system failure cannot be monitored, and achieve the effect of ensuring safe operation
Active Publication Date: 2017-02-01
WEICHAI POWER CO LTD
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Problems solved by technology
[0004] In view of this, the present invention provides a cooling system fault monitoring method and device to solve the technical problem that cooling system faults cannot be monitored in the prior art
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[0069] In order to make the above objects, features and advantages of the present invention more comprehensible, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0070] The cooling system failure monitoring method and device provided by the embodiments of the present invention can solve the problem that the cooling system failure cannot be monitored. It is proposed to use the temperature sensor integrated inside the electrical components in the cooling system circuit to collect the temperature information of the electrical components, and the collected information will be sent to the vehicle controller (HCU, hybrid electric vehicle control unit) in the form of temperature signals, and the vehicle controller will obtain The temperature signal and the temperature signal are processed, calculated, and judged to give feedback to the state of the cooling system, so ...
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The invention discloses a fault monitoring method and device for a cooling system. The method and device are used for monitoring faults of the vehicle cooling system. The method comprises the steps that current-moment temperature values collected by temperature sensors in all electrical elements on a cooling system loop are received; the current-moment temperature value of each electrical element is compared with the highest temperature value of the corresponding electrical element, and a first comparison result corresponding to the corresponding electrical element is obtained; the unit time temperature rise value of each electrical element is obtained and is the difference of the current-moment temperature value and the last-moment temperature value of the corresponding electrical element; the unit time temperature rise value and the highest temperature rise value of each electrical element are compared, and a second comparison result corresponding to the corresponding electrical element is obtained; according to the first comparison results and the second comparison results corresponding to the electrical elements, whether faults exist in the cooling system or not is judged, and the fault cause is obtained.
Description
technical field [0001] The invention relates to the technical field of vehicle cooling systems, in particular to a cooling system fault monitoring method and device. Background technique [0002] In a hybrid vehicle, the thermal state of the electrical components determines whether its working performance can be performed normally. Therefore, the cooling system of the hybrid vehicle needs to cool the electrical components in real time to ensure the normal operation of the electrical components. The cooling system generally uses an electric water pump to provide power for the flow of circulating cooling water. The circulating cooling water in the cooling circuit dissipates heat for each electrical component, and at the same time, the radiator dissipates heat and cools the circulating cooling water to meet the needs of electrical components in various industries. The cooling requirements of the situation. [0003] However, in the prior art, there is no monitoring of the cooli...
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IPC IPC(8): B60Q9/00B60K11/02
Inventor 韩尔樑张桂梅刘林战东红于钦香刘晓辉
Owner WEICHAI POWER CO LTD