阅读说明：本技术 一种用于混合动力汽车的供断油系统 (It is a kind of for hybrid vehicle for fuel cutting-off system ) 是由 轩飞 刘凯 李如兵 于 2019-06-27 设计创作，主要内容包括：本发明涉及混合动力汽车系统技术领域,尤其涉及一种用于混合动力汽车的供断油系统,解决了现有混合动力汽车倒拖断油会在车辆中产生一个明显冲击的缺点,包括电控单元、点火钥匙、转速传感器、温度传感器、怠速传感器、油泵和气缸,所述电控单元包括ECU、ROM、RAM和CAN总线,所述CAN总线的输入端分别与点火钥匙、转速传感器、温度传感器和怠速传感器信号连接,CAN总线的输出端与输出级缸信号连接,所述输出级缸连接有油泵,油泵为输出级缸连接的多个气缸进行喷油,该用于混合动力汽车的供断油系统通过算法提供切断以及重启顺序,确保震动对动力系统的刺激较小,从而使得混合动力汽车驾驶具有良好的驾驶性。(The present invention relates to hybrid vehicle system technical fields, more particularly to it is a kind of for hybrid vehicle for fuel cutting-off system, solve the disadvantage that existing hybrid vehicle towing astern oil-break can generate an obvious impact in the car, including electronic control unit, firing key, speed probe, temperature sensor, idling sensor, oil pump and cylinder, the electronic control unit includes ECU, ROM, RAM and CAN bus, the input terminal of the CAN bus respectively with firing key, speed probe, temperature sensor is connected with idling sensor signal, the output end of CAN bus is connect with output stage cylinder signal, the output stage cylinder is connected with oil pump, oil pump is that multiple cylinders of output stage cylinder connection carry out oil spout, this cuts off and restarts sequence for providing for fuel cutting-off system by algorithm for hybrid vehicle, ensure Vibration is smaller to the stimulation of dynamical system, so that hybrid vehicle, which drives, has good driving.)

1. it is a kind of for hybrid vehicle for fuel cutting-off system, including electronic control unit, firing key, speed probe, temperature Sensor, idling sensor, oil pump and cylinder, which is characterized in that the electronic control unit includes ECU, ROM, RAM and CAN bus, The input terminal of the CAN bus is connect with firing key, speed probe, temperature sensor and idling sensor signal respectively, The output end of CAN bus is connect with output stage cylinder signal, and the output stage cylinder is connected with oil pump, and oil pump is the connection of output stage cylinder Multiple cylinders carry out oil spout, and the firing key is that multiple cylinders of output stage cylinder connection carry out ignition operation.

2. it is according to claim 1 it is a kind of for hybrid vehicle for fuel cutting-off system, which is characterized in that the ROM It is integrated on ECU respectively with RAM, ROM and RAM provide virtual memory and physical memory for ECU processor.

3. it is according to claim 1 it is a kind of for hybrid vehicle for fuel cutting-off system, which is characterized in that the revolving speed Sensor obtains engine speed gradient for monitoring the revolving speed for starting wheel.

4. it is according to claim 1 it is a kind of for hybrid vehicle for fuel cutting-off system, which is characterized in that the temperature Sensor obtains the temperature generated after engine ignition, more accurately judges engine for monitoring engine internal combustion temperature Velocity gradient.

5. it is according to claim 1 it is a kind of for hybrid vehicle for fuel cutting-off system, which is characterized in that the idling Sensor is made comparisons for monitoring no-load speed, acquisition with threshold range.

6. it is according to claim 1 it is a kind of for hybrid vehicle for fuel cutting-off system, which is characterized in that the output Grade cylinder is connected with cylinder, and cylinder is sprayed by oil pump and firing key is utilized to light a fire.

Technical field

The present invention relates to hybrid vehicle system technical field more particularly to a kind of confession for hybrid vehicle are disconnected Oil system.

Background technique

Usually said hybrid vehicle generally refers to oil-electric vehicle (Hybrid Electric Vehicle, HEV), i.e., using traditional internal combustion engine (diesel engine or gasoline engine) and motor as power source, also some is started Machine uses other alternative fuel, such as compressed natural gas, propane and alcohol fuel etc. by transformation.

As the measure of countries in the world environmental protection is increasingly stringenter, hybrid vehicle is due to its energy conservation, low emission etc. Feature becomes an emphasis of automotive research and exploitation, and has begun commercialization.

From towing astern to the transition position of towing astern oil-break, torque jump usually occurs in towing astern oil-break hybrid vehicle, this An apparent impact can be generated in the car.In order to reduce the torque in the transition, ignition timing is delayed by and burns Air is adjusted to smaller value.However, these processes are not always to realize that required torque reduces, because of ignition timing and burning It is still feasible that air can only be reduced to shock-free power operation, it is therefore desirable to it is a kind of for hybrid vehicle for oil-break System provides a good driving experience when improving hybrid vehicle towing astern oil-break.

Summary of the invention

The purpose of the present invention is to solve existing hybrid vehicle towing astern oil-breaks can generate one in the car obviously The shortcomings that impact, and propose it is a kind of for hybrid vehicle for fuel cutting-off system.

To achieve the goals above, present invention employs following technical solutions:

A kind of passing for fuel cutting-off system, including electronic control unit, firing key, speed probe, temperature for hybrid vehicle Sensor, idling sensor, oil pump and cylinder, the electronic control unit include ECU, ROM, RAM and CAN bus, the CAN bus Input terminal is connect with firing key, speed probe, temperature sensor and idling sensor signal respectively, the output of CAN bus End is connect with output stage cylinder signal, and the output stage cylinder is connected with oil pump, and oil pump is that multiple cylinders of output stage cylinder connection carry out Oil spout, the firing key are that multiple cylinders of output stage cylinder connection carry out ignition operation.

Preferably, the ROM and RAM are integrated on ECU respectively, ROM and RAM for ECU processor provide virtual memory and Physical memory.

Preferably, the speed probe obtains engine speed gradient for monitoring the revolving speed for starting wheel.

Preferably, the temperature sensor obtains the temperature generated after engine ignition for monitoring engine internal combustion temperature Degree more accurately judges the velocity gradient of engine.

Preferably, the idling sensor is made comparisons for monitoring no-load speed, acquisition with threshold range.

Preferably, the output stage cylinder is connected with cylinder, and cylinder is sprayed by oil pump and firing key is utilized to light a fire.

The beneficial effects of the present invention are:

This cuts off and restarts sequence for providing for fuel cutting-off system by algorithm for hybrid vehicle, it is ensured that vibration is to power The stimulation of system is smaller, so that hybrid vehicle, which drives, has good driving.

Detailed description of the invention

Fig. 1 is a kind of system structure diagram for fuel cutting-off system for hybrid vehicle proposed by the present invention；

Fig. 2 is a kind of cut-off oil flow chart for fuel cutting-off system for hybrid vehicle proposed by the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.

Referring to Fig.1-2, it is a kind of for hybrid vehicle for fuel cutting-off system, including electronic control unit, firing key, revolving speed Sensor, temperature sensor, idling sensor, oil pump and cylinder, electronic control unit include ECU, ROM, RAM and CAN bus, CAN The input terminal of bus is connect with firing key, speed probe, temperature sensor and idling sensor signal respectively, CAN bus Output end connect with output stage cylinder signal, output stage cylinder is connected with oil pump, oil pump be the connection of output stage cylinder multiple cylinders into Row oil spout, the firing key are that multiple cylinders of output stage cylinder connection carry out ignition operation；

ROM and RAM are integrated on ECU respectively, and ROM and RAM provide virtual memory and physical memory for ECU processor, and revolving speed passes Sensor obtains engine speed gradient, temperature sensor is for monitoring engine internal combustion temperature for monitoring the revolving speed for starting wheel Degree obtains the temperature generated after engine ignition, more accurately judges the velocity gradient of engine, idling sensor is for monitoring No-load speed, acquisition are made comparisons with threshold range, and output stage cylinder is connected with cylinder, and cylinder is sprayed and utilized by oil pump Firing key igniting.

From towing astern to the transition position of towing astern oil-break, torque jump usually occurs in towing astern oil-break, this can be produced in the car A raw apparent impact, in order to reduce the torque in the transition, ignition timing is delayed by and combustion air is adjusted to Smaller value, however, these processes are not always to realize that required torque reduces, because ignition timing and combustion air can only reduce Still feasible to shock-free power operation, in order to support above-mentioned torque to reduce measurement, limited number of cycle of engine (is opened Open and/or close) in, it is opened for single cylinder and/or closes oil spout, and reenter idling.

Monitoring engine speed gradient enters back into idle running to cancel selectivity in the decline of fast engine speed, if Engine speed gradient is in threshold range, then all cylinders are activated immediately.

In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", It is " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " suitable The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, merely to just In description the present invention and simplify description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with Specific orientation construction and operation, therefore be not considered as limiting the invention.

In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relatively important Property or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Person implicitly includes one or more of the features.In the description of the present invention, the meaning of " plurality " is two or two with On, unless otherwise specifically defined.

The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.