Single-cylinder dual-fuel injector control system for four-cylinder engine

Abstract

The single-cylinder double-oil-sprayer control system for the four-cylinder engine comprises four engine cylinder bodies and an MCU controller, one end of each engine cylinder body is provided with an air inlet channel, the positions, at the air inlet channels, of the four engine cylinder bodies are provided with throttle valves, and the throttle valves are connected with the MCU controller. The ends, away from the engine cylinder body, of the multiple air inlet channels fixedly communicate with oil injection modules, the ends, away from the air inlet channels, of the oil injection modules fixedly communicate with air inlet manifolds, and the MCU controller is electrically connected with the four oil injection modules. According to the oil supply module provided by the utility model, the two oil sprayers are arranged and matched with the delay module of the MCU controller, so that the pulse width modulation technology of the MCU controller can be utilized, the two oil sprayers are respectively subjected to delay control through the change of the width of electric pulse, and the oil spraying time and time are accurately controlled; more sufficient mixing of oil and gas is achieved, and engine combustion efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine, especially a single cylinder double fuel injector control system for four cylinder engine. BACKGROUND

[0002] The electric injection technology is a kind of parameter signal that is used for representing the running condition of engine by various sensors, and the fuel injection quantity is controlled according to various working conditions of engine by ECU (ECU) through calculation, analysis and comparison, so that the engine has good power, economy and emission, since the existing four cylinder engine single cylinder is usually equipped with only one fuel injector, it is difficult to mix fuel and air fully in the fuel injection process, and the insufficient mixing of oil and gas will lead to the reduction of combustion efficiency, and further make the engine power output insufficient, and increase fuel consumption, and also cause problems such as carbon deposition.

[0003] Although there are some improved fuel injection systems on the market at present, such as in-cylinder direct injection, double injection (intake manifold injection combined with in-cylinder direct injection) and other technologies, but the improvement of the number and control mode of the fuel injector inside the intake nozzle still has further exploration space, for example, the patent with the application number CN201620274683.4 discloses a single cylinder double fuel injector intake port injection fuel supply electric injection system and engine, although the single cylinder double fuel injector design is adopted, but only the conflict of fuel injection pulse width and injection total quantity is improved by two fuel injectors, and the stable operation of engine is ensured, and the improvement of the number and control mode of the fuel injector inside the intake nozzle still has further exploration space. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at least to solve one of the technical problems existing in the prior art, and provides a single cylinder double fuel injector control system for four cylinder engine, which solves the above problems.

[0005] In order to achieve the above-mentioned purpose, a single cylinder double fuel injector control system for four cylinder engine is provided, which comprises four engine cylinder bodies and an MCU controller, one end of each of the four engine cylinder bodies is provided with an intake port, each of the four engine cylinder bodies is provided with a throttle valve at the position of the intake port, each of the plurality of intake ports is fixedly connected with a fuel injection module away from the engine cylinder body, each of the fuel injection modules is fixedly connected with an intake manifold away from the intake port, the MCU controller is electrically connected with the four fuel injection modules respectively, each of the four engine cylinder bodies is provided with a single cylinder feedback module, and each of the four fuel injection modules is connected with a fuel supply module.

[0006] The oil injection module comprises a connecting sleeve, a one-way valve, a first oil injector and a second oil injector, the one-way valve is arranged at one end of the connecting sleeve close to the intake manifold, the first oil injector and the second oil injector are arranged at both sides of the inside of the connecting sleeve, the first oil injector is arranged at one end of the connecting sleeve close to the one-way valve, the second oil injector is arranged at one end of the connecting sleeve away from the one-way valve, the angle between the oil injection direction of the first oil injector and the intake direction is thirty degrees, and the angle between the oil injection direction of the second oil injector and the intake direction is sixty degrees.

[0007] According to the single-cylinder double-injector control system for a four-cylinder engine, the internal output ports of the MCU controller are provided with delay modules.

[0008] According to the single-cylinder double-injector control system for a four-cylinder engine, the first oil injector and the second oil injector are electrically connected with the delay modules of the MCU controller through dedicated oil injector wire harnesses.

[0009] According to the single-cylinder double-injector control system for a four-cylinder engine, the oil supply module comprises a high-pressure oil pump, a pressure stabilizing valve, a five-way connector, four shunt oil pipes and an electronic pressure regulating valve, the oil inlet end of the high-pressure oil pump is fixedly communicated with an oil tank through an oil path, the oil outlet end of the high-pressure oil pump is fixedly communicated with the five-way connector through the pressure stabilizing valve, the five-way connector is communicated with the four shunt oil pipes through the electronic pressure regulating valve, and the four shunt oil pipes are communicated with the first oil injector and the second oil injector through a three-way connector.

[0010] According to the single-cylinder double-injector control system for a four-cylinder engine, the delay module is a PTL pulse width modulation circuit module.

[0011] According to the single-cylinder double-injector control system for a four-cylinder engine, the four single-cylinder feedback modules are electrically connected with the MCU controller, and each single-cylinder feedback module comprises a temperature sensor, a pressure sensor and a throttle position sensor.

[0012] According to the single-cylinder double-injector control system for a four-cylinder engine, the MCU controller is electrically connected with an engine speed sensor.

[0013] The above scheme has at least one of the following beneficial effects:

[0014] 1. The oil supply module of the utility model is provided with double oil injectors, cooperates with the time delay module of the MCU controller, can utilize the pulse width modulation technology of the MCU controller, controls the two oil injectors respectively through the change of the width of the electric pulse, accurately controls the oil injection time and time, realizes more sufficient mixing of oil gas, improves the engine combustion efficiency, reduces the fuel consumption, improves the engine power performance, and strengthens the practicability of the device.

[0015] 2. The first oil injector and the second oil injector of the oil supply module of the utility model are respectively provided with different included angles with the air inlet direction, cooperate with the different front and rear positions, can further increase the airflow disturbance effect, improve the oil gas mixing degree, and strengthen the practicability of the device.

[0016] The additional aspects and advantages of the utility model will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further illustrated below in combination with the drawings and embodiments;

[0018] Fig. 1 It is the structure schematic view of the oil injection module of the utility model;

[0019] Fig. 2 It is the single cylinder control flow schematic view of the single cylinder double oil injector control system for four cylinder engine of the utility model;

[0020] Fig. 3 It is the oil way connection schematic view of the oil supply module of the utility model.

[0021] LEGEND:

[0022] 1, engine cylinder body;2, air inlet channel;3, oil injection module;4, MCU controller;5, time delay module;6, single cylinder feedback module;7, oil supply module;8, air intake manifold;9, throttle;31, connecting sleeve;32, check valve;33, first oil injector;34, second oil injector. DETAILED DESCRIPTION

[0023] This part will describe the specific embodiments of the utility model in detail, the preferred embodiments of the utility model are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0024] REFERENCE Figs. 1-3The utility model discloses a four -cylinder engine with single cylinder double -fuel injector control system, including four engine cylinder body 1 and MCU controller 4, its characterized in that: four engine cylinder body 1 one end all is provided with air inlet 2, four engine cylinder body 1 all are provided with the air inlet 2 position throttle valve 9, a plurality of air inlet 2 away from engine cylinder body 1 one end all fixedly communicated with injection module 3, injection module 3 away from air inlet 2 one end all fixedly communicated with intake manifold 8, MCU controller 4 respectively with four injection module 3 electric connection, the inside output port of MCU controller 4 all is provided with delay module 5, and delay module 5 is PTL pulse width modulation circuit module, four engine cylinder body 1 all are provided with single cylinder feedback module 6, four single cylinder feedback module 6 all with MCU controller 4 electric connection, and four single cylinder feedback module 6 all include temperature sensor, pressure sensor and throttle position sensor, while MCU controller 4 still is connected with engine speed sensor, four injection module 3 all are communicated with oil supply module 7, and oil supply module 7 includes high pressure oil pump, pressure stabilizing valve, five -way connector, four shunt oil pipe and electronic pressure regulating valve, and the oil inlet end of high pressure oil pump is fixedly communicated with oil tank through oil circuit, and the oil outlet end of high pressure oil pump is fixedly communicated with five -way connector through pressure stabilizing valve, and five -way connector all are communicated with four shunt oil pipes respectively through electronic pressure regulating valve, the utility model sets up oil supply module 7, through setting up the mode of double fuel injector, cooperate MCU controller 4's delay module 5, can utilize the pulse width modulation technology of MCU controller 4, carries out delay control to two fuel injectors respectively through the width change of electric pulse, carries out accurate control to the oil injection time, realizes oil gas more fully mixed, improves engine combustion efficiency, reduces fuel consumption, promotes engine power performance;

[0025] Injection module 3 all include connecting sleeve 31, check valve 32, first fuel injector 33 and second fuel injector 34, and one end of connecting sleeve 31 close to intake manifold 8 is provided with check valve 32, and the inside both sides of connecting sleeve 31 are provided with first fuel injector 33 and second fuel injector 34 respectively, and first fuel injector 33 is arranged on one end close to check valve 32 on connecting sleeve 31, and second fuel injector 34 is arranged on one end away from check valve 32 on connecting sleeve 31, and the included angle between the oil injection direction of first fuel injector 33 and the air inlet direction is thirty degrees, and the included angle between the oil injection direction of second fuel injector 34 and the air inlet direction is sixty degrees, and the different positions of cooperation front and back can further increase the effect of air flow disturbance, improve the oil gas mixing degree, and first fuel injector 33 and second fuel injector 34 are electrically connected with the delay module 5 of MCU controller 4 respectively through a dedicated fuel injector wire harness, and four shunt oil pipes are communicated with first fuel injector 33 and second fuel injector 34 respectively through a tee.

[0026] Working principle: the utility model discloses in working, oil supply module 7 can pass through the mode of setting double oil atomizer, cooperate MCU controller 4 and single cylinder feedback module 6, can according to feedback information, utilize the pulse width modulation technology of MCU controller 4's delay module 5, carry out delay control to two oil atomizers respectively through the width change of electric pulse, and then can carry out accurate control to the timing and time of oil injection, and the first oil atomizer and the second oil atomizer of oil supply module are different respectively with the setting of the included angle between the air intake direction, cooperate the different of front and back position, relative to the symmetrical arrangement in the prior art, can further increase the effect of air flow disturbance, realize oil gas more fully mixed, improve engine combustion efficiency, reduce fuel consumption, improve engine power performance.

[0027] The utility model has been described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by ordinary skilled persons in the technical field without departing from the purpose of the utility model.

Claims

1. A single cylinder dual injector control system for a four cylinder engine comprising four engine cylinders (1) and an MCU controller (4) characterised in that: Four said engine cylinder (1) one end is provided with intake port (2), four said engine cylinder (1) is provided with intake port (2) position is provided with throttle (9), a plurality of said intake port (2) away from the engine cylinder (1) one end is fixedly connected with oil injection module (3), the oil injection module (3) away from the intake port (2) one end is fixedly connected with intake manifold (8), the MCU controller (4) is respectively connected with four oil injection module (3), four said engine cylinder (1) is provided with single cylinder feedback module (6), four said oil injection module (3) is connected with oil supply module (7); Said oil injection module (3) includes connecting sleeve (31), check valve (32), first oil injector (33) and second oil injector (34), the connecting sleeve (31) is provided with check valve (32) near the intake manifold (8) one end, the inside of connecting sleeve (31) both sides are provided with first oil injector (33) and second oil injector (34), the first oil injector (33) is arranged on the connecting sleeve (31) near the check valve (32) one end, the second oil injector (34) is arranged on the connecting sleeve (31) away from the check valve (32) one end, the first oil injector (33) oil injection direction and the angle of air intake direction is thirty degrees, the second oil injector (34) oil injection direction and the angle of air intake direction is sixty degrees.

2. The single cylinder dual injector control system for a four cylinder engine according to claim 1, characterized by, The inside output port of the MCU controller (4) is provided with delay module (5).

3. The single cylinder dual injector control system for a four cylinder engine according to claim 2, characterized by Said first oil injector (33) and second oil injector (34) are respectively connected with the delay module (5) of MCU controller (4) through the dedicated oil injector wire harness.

4. The single cylinder dual injector control system for a four cylinder engine according to claim 1, characterized by, Said oil supply module (7) includes high pressure oil pump, pressure stabilizing valve, five way connector, four shunt oil pipe and electronic pressure regulating valve, the oil inlet end of high pressure oil pump is fixedly communicated with oil tank through oil circuit, the oil outlet end of high pressure oil pump is fixedly communicated with five way connector through pressure stabilizing valve, the five way connector is communicated with four shunt oil pipes through electronic pressure regulating valve, four said shunt oil pipes are respectively communicated with first oil injector (33) and second oil injector (34) through a tee.

5. The single cylinder dual injector control system for a four cylinder engine according to claim 2, characterized by, The delay module (5) is PTL pulse width modulation circuit module.

6. The single cylinder dual injector control system for a four cylinder engine according to claim 1, characterized by, Four said single cylinder feedback module (6) is connected with MCU controller (4), and four said single cylinder feedback module (6) includes temperature sensor, pressure sensor and throttle position sensor.

7. The single cylinder dual injector control system for a four cylinder engine according to claim 1, characterized by, The MCU controller (4) is electrically connected with engine speed sensor.

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