CN201730679U - Diesel engine burning oil and gas intelligent control proportioning device - Google Patents

Abstract

The utility model relates to an intelligent control proportioning device for combustion oil and gas of a diesel engine, which comprises a turbocharger and an intercooling system connected with the turbocharger. The intercooling system is also connected to the intake pipe of the engine, and the intake pipe of the engine is connected in parallel There is a group of air supply pipes, and the air supply pipes are sequentially equipped with a solenoid valve, a first air bag, a pressure regulating valve, a second air bag and an air compressor. When the engine of the utility model is used for instantaneous acceleration, the gas volume satisfaction required for instantaneous acceleration is increased, and the smoke level is greatly reduced. When measured by the opaque smoke level method, the smoke level reduction rate is 30-60%, and other emissions are also reduced accordingly. Acceleration dynamics have been significantly improved. From the perspective of social effects, it reduces the pollutants emitted by urban public transportation, improves the urban living environment, and truly realizes a green, environmentally friendly, and low-carbon living environment.

Description

Diesel engine combustion oil and gas intelligent control ratio device

technical field

The utility model relates to a device for automatically controlling and adjusting the ratio of oil and gas, in particular to an intelligent control ratio device for diesel engine burning oil and gas for the starting acceleration and rapid acceleration process of diesel engines used in vehicles, ships and generator sets.

Background technique

At present, the international community attaches great importance to the control of diesel engine exhaust. The main research directions are: (1) fuel control measures, through ① using alternative fuels; ② improving petroleum smelting technology; ③ developing new diesel additives; eliminating sulfur in diesel, Reduce the aromatic components in fuel, reduce the content of unsaturated hydrocarbons in diesel, improve the quality of diesel, and solve the problem of exhaust emissions from raw materials. (2) In-engine purification technology, using electronic control technology, through optimizing the design of the diesel engine, using supercharged intercooling and EGR to change the mixing ratio of oil and gas to achieve the best match. (3) Exhaust gas post-treatment technology, through the use of catalysts, oxidants and reducing agents, regeneration technology of particulate traps and non-filtering technology to remove particulates, to ensure the cleanliness of exhaust gas.

Because method (1) involves research and development of new alternative fuels and improvement of petroleum smelting technology, large-scale promotion still needs time; method (3) is mainly aimed at the purification and treatment of exhaust gas, does not involve clean combustion technology, and can only treat the symptoms but not the root cause. Therefore, method (2) is currently the only technology that can achieve clean combustion through effective transformation of existing diesel engines, and fundamentally control the exhaust pollution of diesel engines, and has been highly praised by all parties.

But in the research of method (2), following technical problem appears: a, variable section turbocharger, utilize variable section to adjust the pressure of exhaust gas and thereby increase the rotating speed of supercharger, but the possibility in this technology The requirements for the materials used for the variable cross-section are very high, which cannot be completed in China at present. b. The compressors driven by multi-stage supercharging or DC motors in foreign countries are very complicated in structure, difficult to manufacture and high in cost. Second, DC power consumes a lot of power and the starting current is very large, which cannot be satisfied by the existing on-board power supply. c. Some domestic units use the high-pressure gas from the brake gas tank to supplement the gas, which will affect the braking safety after repeated use. d. The electric supercharger is used, but the supercharging effect is not obvious. The reasons are: 1. The rotation speed of the electric supercharger is far less than that of the exhaust gas turbocharger, and the pressure of the gas after supercharging is lower than that of the exhaust gas 2. There is still a lag effect in the start-up time of the electric supercharger.

Utility model content

The technical problem to be solved by the utility model is to propose an intelligent control proportioning device for diesel engine combustion oil and gas with precise structure, convenient installation, low cost, good effect and high safety.

The technical solution adopted by the utility model is: a diesel engine combustion oil-gas intelligent control proportioning device, including a turbocharger and an intercooling system connected to the turbocharger, and the intercooling system is also connected to the intake pipe of the engine. A group of air supply pipes are connected in parallel on the intake pipe of the engine, and a solenoid valve, a first air bag, a pressure regulating valve, a second air bag and an air compressor are sequentially installed on the described air supply pipe, and the air compressor is the first air compressor. The second air bag is inflated, after the pressure is adjusted by the pressure regulating valve, the gas in the second air bag is put into the first air bag, and the solenoid valve is used to open or close to provide the pressure required for the instantaneous change of the engine speed.

Furthermore, in order to build up a small part of the pressure in the engine intake pipe first, and to prevent the gas from returning after the supplementary air, the connecting pipe between the turbocharger and the intercooling system described in the utility model is equipped with a A check valve or a check valve is installed on the connecting pipe between the intercooling system and the engine.

Furthermore, in order to accurately pressurize the intake pipe of the engine, the electromagnetic valve described in the utility model is controlled by an electronic control unit, which controls the opening or closing of the electromagnetic valve after collecting the throttle signal.

More specifically, a pressure sensor is provided in the second air bag of the present invention, and the air compressor changes its working state upon receiving the signal from the pressure sensor. When the pressure in the second air bag reaches a certain value, the pressure sensor receives the signal to make the compressor idle with the engine; when the pressure in the second air bag is lower than a certain value, the air compressor receives the sensor signal and works normally with the engine.

The beneficial effects of the utility model are: after using the utility model, the gas volume satisfaction required for the engine to accelerate instantaneously is increased, and the smoke level is greatly reduced. The smoke level reduction rate is 30-60% when measured by the opaque smoke level method. %, other emissions are also reduced accordingly, and the acceleration power is significantly improved. From the perspective of social effects, it reduces the pollutants emitted by urban public transportation, improves the urban living environment, and truly realizes a green, environmentally friendly, and low-carbon living environment.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a structural block diagram of a preferred embodiment of the present utility model.

Detailed ways

Now in conjunction with accompanying drawing and preferred embodiment the utility model is described in further detail. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the configurations related to the utility model.

A diesel engine combustion oil-gas intelligent control proportioning device as shown in Figure 1 includes a turbocharger and an intercooling system connected to the turbocharger, the intercooling system is also connected to the intake pipe of the engine, and the intake pipe of the engine There is a group of air supply pipes connected in parallel, and the air supply pipes are sequentially equipped with a solenoid valve, a first air bag, a pressure regulating valve, a second air bag and an air compressor, and the air compressor is used to inflate the second air bag After the pressure is adjusted to a specific and suitable pressure through the pressure regulating valve, the gas in the second air bag is put into the first air bag, and the electromagnetic valve is opened or closed to provide the pressure required for the instantaneous change of the engine speed.

Specifically, the electromagnetic valve is controlled by an electronic control unit, and the electronic control unit controls the opening or closing of the electromagnetic valve after collecting the throttle signal. A check valve is installed on the connecting pipe between the turbocharger and the intercooling system or a check valve is installed on the connecting pipe between the intercooling system and the engine. The second air bag is provided with a pressure sensor, and the air compressor changes its working state upon receiving the signal from the pressure sensor.

When the diesel engine is running at idle speed, the external air compressor is used to generate constant-pressure gas in advance and store it in the second air bag, and the gas adjusted to a suitable pressure through the pressure regulating valve flows into the first air bag and is stored. When the pressure in the second air bag reaches a certain value, the pressure sensor receives the signal to make the compressor idle with the engine. When the pressure in the second air bag is lower than a certain value, the air compressor receives the sensor signal and works normally with the engine. When the engine starts or accelerates, the speed of the throttle change is collected by the throttle sensor, and the transmission speed is sent to the electronic control unit ECU. The ECU intelligently judges the change rate of the throttle and sends an instruction to control whether the solenoid valve needs to work. Under normal conditions, the solenoid valve is closed. , Once the ECU gives an instruction to open the solenoid valve, the air bag will supply air to the cylinder, and the ECU will automatically close the solenoid valve after intelligently controlling the rated air supply time.

What is described in the above specification is only the specific implementation of the present utility model, and various illustrations do not limit the essential content of the present utility model. Those of ordinary skill in the art can make specific implementations described before after reading the specification. modification or deformation without departing from the essence and scope of the utility model.

Claims (4)

1. diesel engine combustion oil gas intelligent control proportioning device, comprise the ICS intercooler system that turbine increases device and is connected with turbosupercharger, ICS intercooler system also connects the suction tude of motor, it is characterized in that: be parallel with one group of blowdown pipe on the suction tude of described motor, add solenoid valve on the described blowdown pipe successively, first gas bag, pressure regulator valve, second gas bag and air compressor, described air compressor is the inflation of second gas bag, by after the pressure regulator valve pressure regulation gas in second gas bag being put to first gas bag, utilize the solenoid valve unlatching or close pressure required when engine speed moment change is provided.

2. diesel engine combustion oil gas intelligent control proportioning device as claimed in claim 1 is characterized in that: add on the connecting tube of described turbosupercharger and ICS intercooler system on the connecting tube of one-way valve or ICS intercooler system and motor and add one-way valve.

3. diesel engine combustion oil gas intelligent control proportioning device as claimed in claim 1 or 2 is characterized in that: described solenoid valve is controlled by ECU (Electrical Control Unit), and ECU (Electrical Control Unit) is gathered the unlatching of control electromagnetic valve behind the throttle signal or closed.

4. diesel engine combustion oil gas intelligent control proportioning device as claimed in claim 1 or 2 is characterized in that: be provided with pressure transducer in described second gas bag, air compressor is accepted the signal change working state that described pressure transducer sends.