A dual motor electric fuel injector

Abstract

The utility model discloses a double motor electric injection heater relates to automobile heating equipment technical field, including combustion head, heat exchanger and combustion chamber, and the ignition end of combustion head is linked with the combustion chamber, and heat exchanger is connected with the combustion head, and the combustion chamber is located inside heat exchanger. The utility model discloses a double motor electric injection heater adopts the mode of double motor, can independently control the rotating speed of combustion fan and oil pump, and the air pressure sensor built -in of controller real -time monitoring the air pressure change of the position where the heater is located, and the controller adjusts the rotating speed of combustion motor in real time according to the air pressure change to adjust the air intake of heater, guarantees that the heater can burn normally, further, the coaxial arrangement mode of double motor same shell still can reduce the volume of main motor, and it is convenient to install.

Description

Technical Field

[0001] This utility model relates to the field of automotive heating equipment technology, and in particular to a dual-motor electronic fuel injection heater. Background Technology

[0002] Electronic fuel injection heaters are widely used in buses to provide a heat source for heating the cabin and defrosting the windshield in winter, and can also be used for preheating the bus engine.

[0003] One end of the heater's motor drives the combustion fan to rotate at high speed, while the other end drives the high-pressure fuel pump to circulate fuel in the fuel circuit. When the solenoid valve opens, the high-pressure fuel mist sprayed from the fuel injector mixes thoroughly with the combustion air and is ignited by the high-pressure electrode. The heat generated by combustion is transferred to the circulating liquid in the heat exchanger through heat conduction plates. The heated circulating liquid is then sent to the vehicle's cooling system by the water pump to provide heating and defrosting for the vehicle interior.

[0004] The heater uses a single motor to drive both the fuel pump and the combustion fan. The fuel pump generates a fixed high pressure to achieve proper fuel atomization, thus requiring a fixed rotational speed. This also results in a fixed rotational speed for the combustion fan and a fixed air intake for the heater. The fuel injector's flow rate is also fixed, meaning the fuel intake is constant. This design means the heater burns stably in low-lying areas. However, when the vehicle travels to higher altitudes where oxygen levels drop, the heater's fixed air and fuel intake cannot automatically adjust, leading to incomplete combustion and smoke.

[0005] Developing a dual-motor electronically controlled heater that can operate normally at different altitudes, while also allowing for adjustments to the air intake to meet varying altitude requirements, has become a critical technical challenge for those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a dual-motor electro-injection heater to solve the problems listed in the background art.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] This utility model discloses a dual-motor electro-injection heater, comprising a burner head, a heat exchanger, and a combustion chamber. The ignition end of the burner head is connected to the combustion chamber, the heat exchanger is connected to the burner head, and the combustion chamber is located inside the heat exchanger.

[0009] The combustion head includes a motor cover, a combustion-supporting motor, an oil pump motor, an oil pump, and an aluminum bracket. The combustion-supporting motor and the non-working ends of the oil pump motor are disposed opposite each other in the middle of the aluminum bracket. The motor cover is installed at the opening of the aluminum bracket near the combustion-supporting motor, and an igniter is installed on the outer wall of the motor cover.

[0010] The oil pump is mounted on one end of the aluminum bracket near the oil pump motor.

[0011] A combustion-supporting fan is mounted on the motor shaft of the combustion-supporting motor, and the oil pump motor is connected to the input end of the oil pump via a coupling.

[0012] The output end of the oil pump is equipped with a fuel injector holder, and a fuel injector is installed on the fuel injector holder;

[0013] An ignition electrode is installed at the fuel injector, and the ignition electrode is electrically connected to the igniter via a wire.

[0014] Preferably, the combustion chamber is fixedly connected to the aluminum bracket, and the combustion chamber is in communication with the fuel injector.

[0015] Preferably, the heat exchanger includes an inner sleeve and an outer sleeve, the cavity between the inner sleeve and the outer sleeve is filled with coolant, one end of the outer sleeve is provided with a water inlet, the other end of the outer sleeve is provided with a water outlet, and a temperature sensor is sealed and installed on the outer side wall of the water outlet.

[0016] Preferably, the device also includes a controller mounted on the aluminum bracket, the input terminal of the controller being electrically connected to a switch, the output terminal of the controller being electrically connected to the combustion-supporting motor, and the controller having a built-in air pressure sensor.

[0017] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0018] 1) The motor adopts a dual-motor system, which can independently control the speed of the combustion fan and the oil pump. The controller monitors the air pressure changes at the heater location in real time through the built-in air pressure sensor. The controller adjusts the speed of the combustion motor in real time according to the air pressure changes, thereby adjusting the air intake of the heater to ensure that the heater can burn normally.

[0019] 2) The dual motors are implemented by using the same housing and coaxial design, which reduces the size of the main motor and facilitates installation. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a cross-sectional schematic diagram of the overall device in this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Motor cover; 2. Combustion fan; 3. Combustion motor; 4. Oil pump motor; 5. Coupling; 6. Oil pump; 7. Injector seat; 8. Injector; 9. Combustion chamber; 10. Heat exchanger; 11. Ignition electrode; 12. Water inlet; 13. Water outlet; 14. Temperature sensor; 15. Controller; 16. Aluminum bracket; 17. Ignition device. Detailed Implementation

[0023] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0024] like Figure 1 As shown, a dual-motor electro-injection heater includes a burner head, a heat exchanger, and a combustion chamber. The ignition end of the burner head is connected to the combustion chamber, the heat exchanger is connected to the burner head, and the combustion chamber is located inside the heat exchanger.

[0025] The burner head includes a motor cover 1, a combustion motor 3, an oil pump motor 4, an oil pump 6, and an aluminum bracket 16. The non-working ends of the combustion motor 3 and the oil pump motor 4 are disposed opposite each other in the middle of the aluminum bracket 16. The motor cover 1 is installed at the opening of the aluminum bracket 16 near the combustion motor 3. An igniter 17 is installed on the outer side wall of the motor cover 1.

[0026] The oil pump 6 is installed at one end of the aluminum bracket 16 near the oil pump motor 4;

[0027] The combustion-supporting motor 3 has a combustion-supporting fan 2 mounted on its motor shaft, and the oil pump motor 4 is connected to the input end of the oil pump 6 via a coupling 5.

[0028] The output end of the oil pump 6 is equipped with a fuel injector seat 7, and a fuel injector 8 is installed on the fuel injector seat 7.

[0029] An ignition electrode 11 is installed at the fuel injector 8, and the ignition electrode 11 is electrically connected to the igniter 17 via a wire.

[0030] Specifically, the combustion chamber 9 is fixedly connected to the aluminum bracket 16, and the combustion chamber 9 is connected to the fuel injector 8.

[0031] Specifically, the heat exchanger 10 includes an inner sleeve and an outer sleeve. The cavity between the inner sleeve and the outer sleeve is filled with coolant. One end of the outer sleeve is provided with a water inlet 12, and the other end of the outer sleeve is provided with a water outlet 13. A temperature sensor 14 is sealed and installed on the outer side wall of the water outlet 13.

[0032] Specifically, it also includes a controller 15, which is mounted on the aluminum bracket 16. The input terminal of the controller 15 is electrically connected to the switch to receive the switch signal, and the output terminal of the controller 15 is electrically connected to the combustion motor 3. The controller 15 has a built-in air pressure sensor that can monitor changes in air pressure in real time and adjust the real-time speed of the combustion motor according to the changes in air pressure.

[0033] Working principle of this utility model:

[0034] When the controller receives the power-on signal, the combustion motor drives the combustion fan to work, the oil pump motor drives the oil pump to work, the solenoid valve of the oil pump opens, the fuel is pressurized by the oil pump and then sprayed out atomized fuel through the fuel injector on the injector seat, the igniter works, the ignition electrode generates a high-voltage arc to ignite the atomized fuel, and the fuel continues to burn in the combustion chamber.

[0035] Coolant flows into the heat exchanger from the inlet and out from the outlet under the action of an externally installed water pump, transferring heat to other cooling devices inside the vehicle.

[0036] When the controller's built-in pressure sensor detects changes in air pressure at the heater's location, i.e., changes in altitude, it adjusts the speed of the combustion motor and the air intake in real time to ensure that the heater can burn normally.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A dual-motor electro-injection heater, characterized in that: It includes a burner head, a heat exchanger, and a combustion chamber. The ignition end of the burner head is connected to the combustion chamber, the heat exchanger is connected to the burner head, and the combustion chamber is located inside the heat exchanger. The combustion head includes a motor cover (1), a combustion motor (3), an oil pump motor (4), an oil pump (6), and an aluminum bracket (16). The combustion motor (3) and the non-working end of the oil pump motor (4) are arranged opposite each other in the middle of the aluminum bracket (16). The end of the aluminum bracket (16) near the combustion motor (3) is equipped with a motor cover (1). An igniter (17) is installed on the outer side wall of the motor cover (1). The oil pump (6) is installed at one end of the aluminum bracket (16) near the oil pump motor (4); The combustion-supporting motor (3) has a combustion-supporting fan (2) mounted on its motor shaft, and the oil pump motor (4) is connected to the input end of the oil pump (6) via a coupling (5). The output end of the oil pump (6) is equipped with a fuel injector seat (7), and a fuel injector (8) is installed on the fuel injector seat (7); An ignition electrode (11) is installed at the fuel injector (8), and the ignition electrode (11) is electrically connected to the igniter (17) via a wire.

2. The dual-motor electro-injection heater according to claim 1, characterized in that: The combustion chamber (9) is fixedly connected to the aluminum bracket (16), and the combustion chamber (9) is connected to the fuel injector (8).

3. The dual-motor electro-injection heater according to claim 1, characterized in that: The heat exchanger (10) includes an inner sleeve and an outer sleeve. The cavity between the inner sleeve and the outer sleeve is filled with coolant. One end of the outer sleeve is provided with a water inlet (12), and the other end of the outer sleeve is provided with a water outlet (13). A temperature sensor (14) is sealed and installed on the outer wall of the water outlet (13).

4. A dual-motor electro-injection heater according to claim 1, characterized in that: It also includes a controller (15), which is mounted on the aluminum bracket (16). The input terminal of the controller (15) is electrically connected to the switch, and the output terminal of the controller (15) is electrically connected to the combustion motor (3). The controller (15) has a built-in air pressure sensor.

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