CN110593991A - A real-time active heating device for diesel engine DPF power generation - Google Patents

Abstract

The invention provides an active heating device for real-time power generation of a diesel engine DPF, which includes a clutch set on the power take-off port on the side of the diesel engine, a variable pump set on the clutch, a fuel tank, a hydraulic pipe, a flow valve, a hydraulic generator, an oil return filter, a control The clutch is connected with the variable pump, the variable pump is connected with the oil tank through the suction pipe, the variable pump is connected with the flow valve through the hydraulic pipe, the flow valve is connected with the hydraulic generator through an electromagnetic reversing valve, and the hydraulic generator One output port is connected with the particle trap through the controller, the other output port of the hydraulic generator is connected with the oil return filter, and the oil return filter is connected with the oil tank. The invention has the advantages of real-time power generation, active heating, and guaranteed heating power.

Description

A real-time active heating device for diesel engine DPF power generation

technical field

The invention relates to the technical field of environmental protection in which a diesel engine takes power to generate electricity for tail gas treatment, and in particular relates to an active heating device for real-time power generation of a DPF of a diesel engine.

Background technique

If you want to heat the DPF electrically to make its temperature rise to 600°C, now use the generator with a power of about 700W that comes with the car to charge the battery, and then supply power to the heater for heating after the battery is fully charged. This method has low power and slow charging speed, and cannot realize the real-time heating demand of about 4KW. The heating time is short, and the particles of the DPF cannot be fully reacted and removed. In addition, the number of charging and discharging of the battery is increased, and the service life of the battery is shortened.

Contents of the invention

The object of the present invention is to provide an active heating device for real-time power generation, active heating, and guaranteed power of a diesel engine DPF real-time power generation.

In order to achieve the above object, the present invention is achieved through the following technical solutions:

An active heating device for real-time power generation of a diesel engine DPF, including a clutch set on the power take-off port on the side of the diesel engine, a variable pump set on the clutch, a fuel tank, a hydraulic pipe, a flow valve, a hydraulic generator, an oil return filter, a controller, and a particle The clutch is connected to the variable pump, the variable pump is connected to the oil tank through the suction pipe, the variable pump is connected to the flow valve through the hydraulic pipe, the flow valve is connected to the hydraulic generator through an electromagnetic reversing valve, and an output port of the hydraulic generator The controller is connected with the particle catcher, the other output port of the hydraulic generator is connected with the oil return filter, and the oil return filter is connected with the oil tank.

Further, a pressure gauge is installed at the inlet of the flow valve, and an electromagnetic reversing valve is installed at the outlet of the flow valve. One of the electromagnetic reversing valves is connected to the pressure feedback port of the variable pump, and the other is connected to the hydraulic input of the hydraulic generator. mouth.

Further, the controller is respectively connected with the pressure sensor, temperature sensor and electric heater of the particle trap.

Further, the variable displacement pump absorbs normal pressure hydraulic oil from the oil tank through the suction pipe, and the variable displacement pump outputs high pressure hydraulic oil to the flow valve through the hydraulic pipe.

Compared with the prior art, the present invention has the following advantages:

The present invention is an active heating device for real-time power generation of a diesel engine DPF, which drives a variable pump to rotate from the side power outlet of the diesel engine, thereby driving a hydraulic generator to generate real-time power. The working power is about 10% greater than the power required by the four electric heaters. The heating power of the DPF is guaranteed; the electromagnetic reversing valve can be used to open or close the hydraulic generator in real time, and the DPF can be controlled in real time according to the requirements set by the controller program.

Description of drawings

Fig. 1 is a structural schematic diagram of an active heating device for real-time power generation of a diesel engine DPF according to the present invention.

Detailed ways

Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figure 1, a diesel engine DPF real-time power generation active heating device includes a clutch 2 set on the power take-off port on the side of the diesel engine 1, a variable pump 3 set on the clutch 2, a fuel tank 4, a hydraulic pipe 5, a flow valve 6, Hydraulic generator 7, oil return filter 8, controller 9, particle trap 10. The clutch 2 is connected to the variable pump 3, and the start and stop of the variable pump 3 are controlled by the clutch 2. The variable pump 3 is a plunger type variable pump in a constant flow control mode, with a displacement of 12ml, and operates at a speed of 1500-1800RPM Under this condition, the hydraulic flow rate can be 18-21L/min, and the maximum pressure is 20MPa. The variable pump 3 sucks oil from the fuel tank 4, the variable pump 3 is connected to the fuel tank 4 through a suction pipe, the variable pump 3 is connected to the flow valve 6 through a hydraulic pipe 5, and the variable variable pump 3 absorbs normal pressure hydraulic oil from the fuel tank 4 through a suction pipe, and the variable variable pump 3 High-pressure hydraulic oil is output to the flow valve 6 through the hydraulic pipe 5 . There is a pressure gauge 11 at the inlet of the flow valve 6. The pressure gauge 11 is used to detect the outlet pressure of the variable pump 3. There is an electromagnetic reversing valve 12 at the outlet of the flow valve 6. One of the electromagnetic reversing valves 12 is connected to the variable displacement pump. 3's pressure feedback port X, and the other is connected to the hydraulic input port of 3.5KW hydraulic generator 7. The setting of the flow valve 6 can provide the hydraulic generator 7 with a constant flow of hydraulic oil, which can ensure the constant speed of the hydraulic generator 7 . One output port P of the hydraulic generator 7 is connected to the particle catcher 10 through the controller 9, the other output port T of the hydraulic generator 7 is connected to the oil return filter 8, and the oil return filter 8 is connected to the oil tank 4, The oil return filter 8 is used to filter out the dirty particles in the hydraulic oil to ensure that the hydraulic oil is clean.

The controller 9 is connected to the pressure sensor 13 , the temperature sensor 14 and the electric heater 15 of the particle trap 10 respectively. The particle trap 10 is provided with two pressure sensors, three temperature sensors, and four electric heaters at the head and tail, and the controller 9 communicates with the two pressure sensors, three temperature sensors, and four electric heaters at the head and tail of the particle trap 10, respectively. electric heater connected.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as Within the protection scope of the present invention.

Claims (4)

1. The utility model provides a diesel engine DPF active heating device that generates electricity in real time which characterized in that: variable pump and oil tank, hydraulic pressure pipe, flow valve, hydraulic generator, oil return filter, controller, the particle trapper that set up on the clutch that sets up on the power take-off of diesel engine side, the clutch links to each other with the variable pump, and the variable pump passes through the straw and links to each other with the oil tank, and the variable pump passes through the hydraulic pressure pipe and links to each other with the flow valve, and the flow valve links to each other with hydraulic generator through an electromagnetic directional valve, and an delivery outlet of hydraulic generator passes through the controller and links to each other with the particle trapper, and another delivery outlet of hydraulic generator links to each other with the oil return filter, and the oil return filter links to each other with the.

2. The active heating device for real-time power generation of the DPF of the diesel engine as claimed in claim 1, wherein: the inlet of the flow valve is provided with a pressure gauge, the outlet of the flow valve is provided with an electromagnetic directional valve, one path of the electromagnetic directional valve is connected to a pressure feedback port of the variable pump, and the other path of the electromagnetic directional valve is connected to a hydraulic input port of the hydraulic generator.

3. The active heating device for real-time power generation of the DPF of the diesel engine as claimed in claim 1 or 2, wherein: the controller is respectively connected with the pressure sensor, the temperature sensor and the electric heater of the particle catcher.

4. The active heating device for real-time power generation of the DPF of the diesel engine as claimed in claim 1, wherein: the variable pump absorbs normal-pressure hydraulic oil from the oil tank through the suction pipe, and outputs high-pressure hydraulic oil to the flow valve through the hydraulic pipe.