Control method, device and system of engine electric-control fan
An engine and fan technology, applied in the field of automation, can solve problems such as conflicts and insufficient braking force of vehicles
Active Publication Date: 2015-09-09
WEICHAI POWER CO LTD
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Problems solved by technology
[0002] When the vehicle is running, the water temperature of the hydraulic retarder will exceed the preset temperature, resulting in insufficient braking force of the vehicle. In order to solve the above problems, the hydraulic retarder ECU is used in the prior art to judge whether the water temperature exceeds the preset Set the temperature. When the temperature is higher than the preset temperature, the control relay needs to be closed to start the electric control fan, but the electric control fan is also controlled by the engine ECU. When the water temperature of the engine body circulation channel is too high, the engine ECU also needs to control the relay. Close to start the electronically controlled fan
[0003] The engine ECU and the hydraulic retarder ECU control the electronically controlled fan at the same time, which is prone to conflicts, so a way is needed to solve the above problems
Method used
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[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0047] Such as figure 1 As shown, the present invention provides a control system for an engine electronically controlled fan, including:
[0048] ① Engine body circulating water channel, ② Engine water temperature sensor, used to monitor engine water temperature, ③ Engine ECU, installed on the engine body, ④ Communication CAN line, ⑤ Hydraulic retarder ECU, installed on the hydraulic retarder On the body of the retarder, ⑥ is the water temperature sensor of ...
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The invention provides a control method, device and system of an engine electric-control fan. According to the invention, when a hydrodynamic retarder ECU detects that water temperature of a circulation water channel of a buffer body is higher than a set temperature and an electric control fan should be started to radiate heat, message with a negative torque is sent to an engine ECU which will select a biggest fan wind speed to control the electric control fan to cool a heat radiation water tank by synthesizing a first fan wind speed and other fan wind speed of the hydrodynamic retarder ECU. Because the hydrodynamic retarder ECU and the engine ECU share one heat radiation water tank, the heat radiation water tank can be cooled via biggest fan wind speed. Thus, x heat radiation requirements of the circulation water channels of both the engine body and the hydrodynamic retarder body can be met; just one engine ECU rather than two ECUs is used for controlling the electric control fan, thereby avoiding a heat radiation conflict.
Description
technical field [0001] The invention relates to the technical field of automation, in particular to a control method, device and system for an engine electronically controlled fan. Background technique [0002] When the vehicle is running, the water temperature of the hydraulic retarder will exceed the preset temperature, resulting in insufficient braking force of the vehicle. In order to solve the above problems, the hydraulic retarder ECU is used in the prior art to judge whether the water temperature exceeds the preset Set the temperature. When the temperature is higher than the preset temperature, the control relay needs to be closed to start the electric control fan, but the electric control fan is also controlled by the engine ECU. When the water temperature of the engine body circulation channel is too high, the engine ECU also needs to control the relay. Close to activate the electronically controlled fan. [0003] The engine ECU and the hydraulic retarder ECU contr...
Claims
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Login to View More IPC IPC(8): F04D27/00F01P7/04
Inventor 李同楠陈玉杰张成国朱兴军
Owner WEICHAI POWER CO LTD