Intelligent cooling system for internal combustion forklift

Abstract

The invention discloses an intelligent cooling system for an internal combustion forklift. The intelligent cooling system comprises a controller, an engine controller, a gearbox controller, a temperature sensor and a proportional solenoid valve, wherein the engine controller and the gearbox controller are in data interaction with the controller through a bus, the temperature sensor and the proportional solenoid valve are directly connected with the controller through wires, and the proportional solenoid valve is used for controlling the rotation speed of a fan according to commands of the controller. According to the intelligent cooling system of the internal combustion forklift, the temperature of different parts of the engine is collected in real time through the controller, and if the real-time temperature exceeds a preset alarm temperature, the heat dissipation fan is directly turned on to the maximum rotating speed to meet the heat dissipation requirement of the system; and if thereal-time temperature does not exceed the preset alarm temperature, the algorithm comparison is carried out, the maximum cooling instruction is determined, the cooling instruction is converted into apulse signal, the proportional solenoid valve is controlled to perform more stable rotation speed change control on the heat dissipation fan, and the noise of the heat dissipation system is reduced.

Description

technical field [0001] The invention relates to the technical field of vehicle intelligent control, in particular to an intelligent cooling system for an internal combustion forklift. Background technique [0002] With the increasing requirements for energy saving and emission reduction of construction machinery and road transport vehicles, the engine thermal management system is facing new challenges. Higher heat dissipation requirements and more accurate temperature control require that the vehicle heat dissipation control system can efficiently adjust the heat dissipation intensity in real time, and an indispensable part of the heat dissipation control system is the fan drive system. The adoption of a more intelligent and efficient fan drive solution is also An integral part of future vehicles. [0003] At present, the traditional solution adopted by internal combustion forklifts is to directly couple the driving fan with the engine through the pulley, so that the fan sp...

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Problems solved by technology

[0003] At present, the traditional solution adopted by internal combustion forklifts is to directly couple the driving fan with the engine through the pulley, so that the fan speed depends entirely on the engine speed, and cannot be adjusted in real time according to the change of the engine's working conditions. When the engine is working at low speed and high load, Insufficient cooling; when the engine is working at high speed and low load, the cooling is excessive, resulting in energy waste; there is no high temperature alarm prompt and fault diagnosis and analysis, resulting in the failure to find the real cause of the fault after high temperature shutdown

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