阅读说明：本技术 一种柴油汽车的供油加热方法 (Oil supply heating method of diesel vehicle ) 是由 阳禩乾 徐勇 吴起 于 2020-06-30 设计创作，主要内容包括：本发明公开了一种柴油汽车的供油加热方法,燃油加热器加热发动机内的残余储油,燃油加热器达到设定工作时间后,启动发动机,燃油加热器停止加热,供油系统加热器加热供油系统内的燃油达到设定温度,供油系统加热器停止加热。发动机精油滤清器及高压油管内有残余储油足够发动机启动,当发动机启动后利用发电机提供电能对其余加热器供电,这样的设置有效减少了启动阶段的加热功率,降低了蓄电池负载。燃油加热控制器通过监测各加热器的工作电流来判断各加热器的工作状态并通过Can总线将各加热器的工作状态及系统故障等信息传递给显示器显示,有效帮助驾驶员直观了解了燃油加热系统状态。(The invention discloses an oil supply heating method of a diesel vehicle, wherein a fuel oil heater heats residual stored oil in an engine, the engine is started after the fuel oil heater reaches set working time, the fuel oil heater stops heating, the fuel oil in an oil supply system is heated by an oil supply system heater to reach set temperature, and the oil supply system heater stops heating. Residual oil storage in the engine oil filter and the high-pressure oil pipe is enough for starting the engine, and after the engine is started, the generator is used for providing electric energy to supply power to other heaters, so that the heating power in the starting stage is effectively reduced, and the load of the storage battery is reduced. The fuel heating controller judges the working state of each heater by monitoring the working current of each heater and transmits the working state of each heater, system faults and other information to the display for display through the Can bus, thereby effectively helping a driver to visually know the state of the fuel heating system.)

1. An oil supply heating method of a diesel vehicle is characterized in that: the fuel oil heater heats residual stored oil in the engine, the engine is started after the fuel oil heater reaches set working time, the fuel oil heater stops heating, the fuel oil supply system heater heats fuel oil in the fuel oil supply system to reach set temperature, and the fuel oil supply system heater stops heating.

2. The fuel supply heating method of a diesel vehicle as set forth in claim 1, wherein: the fuel oil heater heats the residual stored oil in the engine, and comprises a diesel oil filter heater (8) for heating the residual stored oil in the engine and a high-pressure oil pipe heater (9) for heating the residual stored oil in the engine.

3. The fuel supply heating method of a diesel vehicle as set forth in claim 1, wherein: the control method for heating the residual oil storage in the engine by the fuel oil heater comprises the following steps: and setting the heating time of the fuel heater according to the environment temperature and the diesel oil label, and monitoring the temperature of residual stored oil in the engine.

4. The fuel supply heating method of a diesel vehicle as set forth in claim 1, wherein: the fuel oil in the fuel supply system heated by the fuel supply system heater comprises fuel oil heated by a fuel tank heater (5) and fuel oil heated by a fuel supply pipe heater (6).

5. The fuel supply heating method of a diesel vehicle as set forth in claim 4, wherein: the heater of the oil supply system heats fuel oil in the oil supply system and also comprises a diesel coarse filtration heater (7) for heating the fuel oil.

6. The fuel supply heating method of a diesel vehicle as set forth in claim 4, wherein: the oil supply pipe heater comprises heaters arranged on all oil supply pipes between an oil outlet of the oil tank and the diesel filter.

7. The fuel supply heating method of a diesel vehicle as set forth in claim 1, wherein: the judgment method for starting the engine comprises the following steps: and monitoring the rotating speed of the engine, and starting the engine when the rotating speed of the engine reaches a starting set value.

Technical Field

The invention relates to the technical field of automobile starting, in particular to an oil supply heating method of a diesel automobile.

Background

The viscosity of diesel oil is higher than that of gasoline, and the problems of condensation, wax deposition, oil pipe blockage and the like can occur at lower temperature, so that the diesel engine can not be started. In view of such problems, the prior art generally deals with the following: 1. the lower grade diesel oil is adopted to reduce the condensation temperature of the diesel oil, but the low grade diesel oil has high price and poor economical efficiency. 2. The heating device is used for carrying out local heating on parts such as an oil tank, an oil path or a diesel oil filter, but the parts which are not heated have the problem of oil path blockage, and the existing heating device is controlled by a switch and does not realize intellectualization and informatization.

Disclosure of Invention

The invention aims to solve the defects of the background technology, and provides an intelligent diesel vehicle oil supply heating method which can electrically heat the whole oil supply system of a diesel vehicle to ensure the smoothness of the oil supply system, wherein each electric heater is controlled by an ECU (electronic control Unit).

In order to achieve the purpose, the invention provides an oil supply heating method of a diesel vehicle, which is characterized in that: the fuel oil heater heats residual stored oil in the engine, the engine is started after the fuel oil heater reaches set working time, the fuel oil heater stops heating, the fuel oil supply system heater heats fuel oil in the fuel oil supply system to reach set temperature, and the fuel oil supply system heater stops heating.

Further, the heating of the residual oil in the engine by the fuel oil heater comprises heating of the residual oil in the engine by the diesel oil filter heater and heating of the residual oil in the engine by the high-pressure oil pipe heater.

Further, the control method for heating the residual oil storage in the engine by the fuel oil heater comprises the following steps: and setting the heating time of the fuel heater according to the environment temperature and the diesel oil label, and monitoring the temperature of residual stored oil in the engine.

Further, the fuel in the fuel supply system is heated by the fuel supply system heater, and the fuel is heated by the fuel tank heater and the fuel supply pipe heater.

Further, the fuel oil in the fuel supply system heated by the fuel supply system heater also comprises fuel oil heated by a diesel coarse filtration heater.

Furthermore, the oil supply pipe heater comprises heaters arranged on all oil supply pipes between the oil outlet of the oil tank and the diesel filter.

Further, the method for judging the starting of the engine is as follows: and monitoring the rotating speed of the engine, and starting the engine when the rotating speed of the engine reaches a starting set value.

The invention has the beneficial effects that: residual oil storage in the engine oil filter and the high-pressure oil pipe is enough for starting the engine, and after the engine is started, the generator is used for providing electric energy to supply power to other heaters, so that the heating power in the starting stage is effectively reduced, and the load of the storage battery is reduced. The fuel heating controller judges the working state of each heater by monitoring the working current of each heater and transmits the working state of each heater, system faults and other information to the display for display through the Can bus, thereby effectively helping a driver to visually know the state of the fuel heating system. The fuel oil heating controller can monitor the temperature of each heating part in real time, and stops the heater when the set working temperature is reached. When the diesel oil label changes, the setting can be carried out through the display.

Drawings

FIG. 1 is a system diagram of a heating device for an oil supply system of a diesel vehicle according to the present invention;

FIG. 2 is a graph of diesel fuel heating time versus ambient temperature in accordance with the present invention;

FIG. 3 is a flow chart of the heating control of the diesel fuel system according to the present invention;

the system comprises a fuel oil heating switch 1, a fuel oil heating controller 2, a display 3, an ambient temperature sensor 4, a fuel tank heater 5, a fuel oil supply pipe heater 6, a diesel oil rough filtering heater 7, a diesel oil filtering heater 8, a high-pressure oil pipe heater 9 and an engine rotating speed signal sensor 10.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

The fuel supply heating method of the diesel vehicle shown in fig. 1 to 3: the fuel oil heating device comprises a fuel oil heater switch 1, a fuel oil heating controller 2, a display 3, an ambient temperature sensor 4, a fuel oil tank heater 5, a fuel oil supply pipe heater 6, a diesel oil rough filtering heater 7, a diesel oil filtering heater 8, a high-pressure oil pipe heater 9 and an engine rotating speed signal sensor 10.

The curves set in fig. 2 and 3 illustrate:

the specific heat capacity of the diesel oil for the automobile is about 2100J/(Kg), the density is 0.82 to 0.87Kg/L, the capacity of a diesel oil filter is V1(L), and the capacity of a high-pressure oil pipe is V2 (L). The rated working voltage of the fuel oil heater is 24V, and the working current is 15A.

The diesel vehicle mainly selects 0#, -10#, -20#, -35#, -50#, 5 trademarks of diesel, and selects 0# diesel when the temperature is above 4 ℃; selecting-10 # diesel oil at the temperature of 4-5 ℃; selecting-20 # diesel oil at the temperature of-5 to-14 ℃; the-35 # diesel oil is selected when the temperature is-14 to-29 ℃.

FIG. 2: same diesel grade, different ambient temperature