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Vehicle low-temperature start auxiliary system and control method thereof

A start-up system and low-temperature technology, which is applied to engine components, engine start-up, machine/engine, etc., can solve problems such as difficulty in starting vehicles at low temperature, and achieve the effect of reducing heating power and load

Active Publication Date: 2021-04-30
DONGFENG OFF ROAD VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above defects or improvement needs of the prior art, the present invention aims to solve the comprehensive problem of difficulty in starting the vehicle at low temperature in the prior art

Method used

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  • Vehicle low-temperature start auxiliary system and control method thereof
  • Vehicle low-temperature start auxiliary system and control method thereof
  • Vehicle low-temperature start auxiliary system and control method thereof

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Experimental program
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Embodiment 1

[0024] Please refer to Figure 1-Figure 4 , a vehicle low temperature auxiliary start system, including a cold start controller ECU1, No. 1 fuel temperature sensor 2, No. 2 fuel temperature sensor 3, ambient temperature sensor 4, battery capacity sensor 5, battery temperature sensor 6, engine coolant temperature sensor 7. Liquid heater 8, liquid heater oil pump 9, fuel heater 10, supercapacitor 11, battery heater 12 and engine air intake preheater 13, the cold start controller ECU1, No. 1 fuel temperature sensor 2, The output terminals of the fuel temperature sensor B3, the ambient temperature sensor 4, the battery capacity sensor 5 and the battery temperature sensor 6 are all connected to an input terminal of the cold start controller ECU1, and an output terminal of the cold start controller ECU1 is connected to the liquid heater 8. The liquid heater oil pump 9, the fuel heater 10, the supercapacitor 11, and the battery heater 12 are all connected; the cold start controller E...

Embodiment 2

[0042] Embodiment 2: For gasoline vehicles, since gasoline is a mixture, there is no fixed freezing point, and the freezing point is also different with different labels. The general freezing point of gasoline is -75°C, and the freezing temperature of pure ethanol is -117.3°C, so gasoline will not condense at ambient temperature. Therefore, no fuel heating system is required for the low-temperature starting device of gasoline vehicles. System structure such as Figure 8 shown.

[0043] The cold start of the engine is a comprehensive problem. Single fuel heating cannot solve the problem of excessively low engine cylinder temperature, and single liquid heating, intake air preheating, and super capacitor cannot solve the problem of wax deposition in the oil supply pipeline of the engine. The present invention The vehicle's low temperature auxiliary start system can solve the cold start problem of the engine through the cooperation of the electronic parking system, liquid heatin...

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Abstract

The invention discloses a vehicle low-temperature start auxiliary system. The vehicle low-temperature start auxiliary system comprises a cold start controller ECU, a first fuel oil temperature sensor, a second fuel oil temperature sensor, an environment temperature sensor, a storage battery capacity sensor, a storage battery temperature sensor, an engine cooling liquid temperature sensor, a liquid heater, a liquid heater oil pump, a fuel oil heater, a super capacitor, a storage battery heater and an engine air intake preheater. The invention further discloses a corresponding control method of the vehicle low-temperature start auxiliary system. Through mutual cooperation of an electronic parking system, liquid heating, air intake preheating and the super capacitor, the cold start problem of the engine can be well solved, and the purpose of starting the vehicle in a cold state with the minimum energy consumption can be achieved. After the engine is started, a vehicle-mounted silicon generator is used for providing electric energy to supply power to other heaters, the heating power in the starting stage is reduced, and the storage battery load is reduced.

Description

technical field [0001] The invention belongs to the technical field of vehicle auxiliary starting, and more particularly relates to a vehicle low temperature auxiliary starting system and a control method thereof. Background technique [0002] Difficulty in starting a vehicle in a low-temperature environment is a comprehensive problem: the increase in engine oil viscosity increases the starting torque of the engine; the increase in the viscosity of the grease in the moving mechanism of the starter results in an increase in rotation resistance; every time the temperature of the battery drops by 1°C, the capacity drops by 0.98%. The capacity decreases by about 55% in an environment of 30°C, and the instantaneous discharge capacity decreases due to the increase in the internal resistance of the battery; for diesel vehicles, there is also the problem that the viscosity of the fuel increases and it is difficult to ignite. The above-mentioned various reasons lead to a decrease in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N19/04F02N19/10F02N11/00F02N11/08
CPCF02N19/001F02N19/04F02N19/10F02N11/003F02N11/0866F02N2019/002
Inventor 罗俊辉阳禩乾吴先东徐勇吴起
Owner DONGFENG OFF ROAD VEHICLE CO LTD