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Water temperature control method of AMT vehicle type hydraulic retarder and control system thereof

A water temperature control method and hydraulic retarder technology, applied in the direction of liquid resistance brakes, slack regulators, brake types, etc., can solve the problems of retarder braking capacity reduction, limited engine power, high engine water temperature, etc. To achieve the effect of enhanced cooling capacity

Active Publication Date: 2015-12-02
SINO TRUK JINAN POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the hydraulic retarder on the AMT model will generate a lot of heat when braking, which will cause the engine water temperature to be too high, resulting in the retarder's own braking ability becoming smaller and engine power limited, the invention provides A safe and reliable water temperature control method and control system for AMT vehicle hydraulic retarder

Method used

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  • Water temperature control method of AMT vehicle type hydraulic retarder and control system thereof
  • Water temperature control method of AMT vehicle type hydraulic retarder and control system thereof
  • Water temperature control method of AMT vehicle type hydraulic retarder and control system thereof

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Embodiment 1

[0056] see figure 1 and figure 2 , Embodiment 1 of the present invention provides a water temperature control system for a hydraulic retarder of an AMT model, including a body controller BCU, an engine electronic control unit ECU, an automatic transmission electronic control unit TCU, a gearbox actuator and a hydraulic retarder. Transmission, the engine electronic control unit ECU, automatic transmission electronic control unit TCU and hydraulic retarder are all connected to the body controller BCU;

[0057] The body controller BCU is respectively connected with the engine electronic control unit ECU, the automatic transmission electronic control unit TCU and the hydraulic retarder through the CAN bus; it is used to send the working state of the hydraulic retarder to the CAN On the bus, when the BCU receives its status, it starts to query the current water temperature value. If the water temperature is higher than the set warning temperature, the BCU receives the current eng...

Embodiment 2

[0087] see figure 2 , the embodiment of the present invention provides a kind of control method of AMT heavy-duty special vehicle transfer gear shifting, comprises the following steps:

[0088] (1) After the engine ECU is powered on, the current coolant temperature t is collected through the water temperature sensor 1 (unit is ℃), and send it to the CAN bus through CAN information ET1, the sending cycle is 1000ms, the specific content is as follows.

[0089]

[0090] The body controller (BCU) can read the information of ET1 from the CAN line to know the current water temperature value.

[0091] (2) When the hydraulic retarder starts to work, it will send its status to the CAN bus through the message ERC1, and the sending cycle is 100ms.

[0092]

[0093] when a 1 =0, it means that the retarder does not play a braking role; if a 1 >0, indicating that the retarder is working for braking.

[0094] (3) BCU checks the content of ERC1, when it finds a 1 When >0, sta...

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Abstract

The invention discloses a water temperature control method of an AMT vehicle type hydraulic retarder and a control method thereof, which comprise a vehicle body control unit BCU, an engine electronic control unit ECU, an automatic transmission electronic control unit TCU, a gear box executing mechanism and a hydraulic retarder, wherein the engine electronic control unit ECU, the automatic transmission electronic control unit TCU and the hydraulic retarder are respectively connected to the vehicle body control unit BCU. According to the invention, the beneficial effects are: the reliable safety performance when a vehicle is driven downhill is ensured; at the same time, when an engine is ensured to work within reasonable work temperature range, the engine fuel economy performance is ensured; when the retarder has sufficient brake torque during downhill, the damage to a friction piece is reduced by slight using or disusing a main brake to brake; at the same time, a water tank watering the friction piece during downhill can be eliminated, thus more goods can be carried; and the value at the safety and economy aspects is high.

Description

technical field [0001] The invention relates to the technical field of water temperature control of a hydraulic retarder of an AMT vehicle, in particular to a water temperature control method and a control system of a hydraulic retarder of an AMT vehicle. Background technique [0002] At present, the safety of vehicles is getting more and more attention, and hydraulic retarders are also widely used in heavy-duty commercial vehicles and passenger vehicles. For commercial vehicles, the assembled hydraulic retarder can abandon the water tank that sprays water on the friction plate, which increases the weight of the cargo, reduces the wear of the friction plate, and increases the economic performance and safety performance; It is said that reducing the wear of the friction plate can ensure the safety of passengers, and also increase the economic performance and safety performance. However, when the retarder is braking, it will generate a lot of heat, especially when going dow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D57/00F16D65/78F16H57/04
Inventor 吴立香曹文斌田磊赵玉超张文斌王军张永刚石红云李发友
Owner SINO TRUK JINAN POWER
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