A stable diesel electronic fuel injection environment-friendly engine
By integrating multiple relays on the generator control board of diesel electric injection environmentally friendly engine and adding an AVR power supply and frequency automatic conversion unit, the problems of complex engine control circuits and large voltage influence are solved, and the protection of the AC brushless motor and the stability and maintenance convenience of the control part are achieved.
Patent Information
- Application Number
- CN202421379348.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-06-17
AI Technical Summary
The existing diesel electric injection environmentally friendly engine control circuit is complex and has a high failure rate. It has a great impact on the voltage of the AVR and motor excitation coil when the engine starts, which can easily lead to burnout.
A stable diesel electric injection environmentally friendly engine is designed. By integrating the start motor relay, shutdown relay, fault relay and other structures on the generator control board, and adding an AVR power supply and a 50Hz-60Hz frequency automatic conversion unit to ensure that the AC brushless motor receives appropriate voltage at different speeds.
It realizes protection of brushless AC motors, reduces the failure rate, improves the stability and maintenance convenience of the control part, and meets the user's usage needs.
Smart Images
Figure CN222721383U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engines, in particular to a stable diesel electronic injection environment-friendly engine. Background Art
[0002] High-pressure common rail electronic fuel injection technology refers to a fuel supply method that completely separates the generation of injection pressure and the injection process from each other in a closed-loop system consisting of a high-pressure fuel pump, power sensor and electronic control unit (ECU). It is a high-pressure fuel pump that delivers high-pressure fuel to a common fuel supply pipe, and achieves precise control through the oil pressure in the common fuel supply pipe, so that the pressure of the high-pressure fuel pipe is independent of the engine speed, which can greatly reduce the degree to which the diesel engine fuel supply pressure changes with the engine speed.
[0003] Now all diesel electronic fuel injection environmentally friendly engines have their own control circuits, because the control part of the engine factory has too many lines, there will be some problems, such as unsightly, too messy, complicated, high failure rate, difficult maintenance, etc., and some users will add some of their own control parts during specific use, making the diesel electronic fuel injection environmentally friendly engine more complicated, with a higher failure rate, and unable to meet people's use needs. In addition, when the engine is just started at 850 rpm, it has a great impact on the AVR and the motor excitation coil, because the AVR inputs 220-250V in normal operation, and the output cannot exceed 50V. If the voltage exceeds 50V, the motor excitation coil and rotor coil will be burned out. When the engine speed is low, the generator has only 200V voltage, and the motor tap voltage is about 100V. The AVR does not get the input normal working voltage, so the output voltage is amplified to 90-100V, which burns the excitation coil and rotor coil. Utility Model Content
[0004] The utility model aims to provide a stable diesel electronic fuel injection environment-friendly engine to solve the problems raised in the above-mentioned background technology.
[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a stable diesel electronic fuel injection environmentally friendly engine, including a generator control board, on which a starter motor relay, a shutdown relay, a fault relay, a speed relay, a speed change relay, a frequency conversion relay, an automatic throttle and an AVR power supply relay are integrated, the AVR power supply relay is connected to an AVR power supply through an automatic frequency conversion unit, the AVR power supply is connected to an AC brushless motor through a wire, and the generator control board is connected to a diesel engine and a CPU controller.
[0006] In a preferred embodiment, the frequency conversion range of the automatic frequency conversion unit is 50 Hz-60 Hz.
[0007] In a preferred embodiment, the generator control board is also integrated with a fuse, a main power relay, a preheating relay and a multi-state switch.
[0008] In a preferred embodiment, when the rotation speed of the AC brushless motor is 1500-1600 rpm, the AVR power supply provides the AC brushless motor with a voltage of 50 Hz and 400 V. When the rotation speed of the AC brushless motor is 1800 rpm, the AVR power supply provides the AC brushless motor with a voltage of 60 Hz and 440 V.
[0009] Compared with the prior art, the beneficial effects achieved by the utility model are:
[0010] 1. The utility model adds an AVR power supply and a 50Hz-60Hz frequency automatic conversion unit. When the speed of the AC brushless motor is 1500-1600 rpm, the AVR power supply provides a 50Hz, 400V voltage for the AC brushless motor. When the speed of the AC brushless motor is 1800 rpm, the AVR power supply provides a 60Hz, 440V voltage for the AC brushless motor, thereby protecting the AC brushless motor.
[0011] 2. The utility model integrates a starter motor relay, a stop relay, a fault relay, a speed relay, a speed change relay, a frequency conversion relay, an automatic throttle and an AVR power supply relay on a traditional generator control panel, so that the control part has high stability, low failure rate, and is easy to maintain and convenient for people to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0013] Figure 1 It is a schematic diagram of the overall circuit structure of the utility model;
[0014] In the figure: 1. Generator control board; 2. Automatic frequency conversion unit; 3. AVR power supply; 4. AC brushless motor; 5. Diesel engine; 6. CPU controller. DETAILED DESCRIPTION
[0015] See also Figure 1The utility model provides a stable diesel electronic fuel injection environment-friendly engine, comprising a generator control board 1, on which a starter motor relay, a shutdown relay, a fault relay, a speed relay, a speed change relay, a frequency conversion relay, an automatic throttle and an AVR power supply relay are integrated, the AVR power supply relay is connected to an AVR power supply 3 through an automatic frequency conversion unit 2, the AVR power supply 3 is connected to an AC brushless motor 4 through a wire, and the generator control board 1 is connected to a diesel engine 5 and a CPU controller 6.
[0016] In a preferred embodiment, the frequency conversion range of the automatic frequency conversion unit 2 is 50Hz-60Hz. When the speed of the AC brushless motor is 1500-1600 rpm, the AVR power supply provides the AC brushless motor with a voltage of 50Hz and 400V. When the speed of the AC brushless motor is 1800 rpm, the AVR power supply provides the AC brushless motor with a voltage of 60Hz and 440V, thereby protecting the AC brushless motor.
[0017] In a preferred embodiment, the generator control panel 1 is also integrated with a fuse, a main power relay, a preheating relay and a multi-state switch.
[0018] In a preferred embodiment, when the rotation speed of the AC brushless motor 4 is 1500-1600 rpm, the AVR power supply 3 provides the AC brushless motor 4 with a voltage of 50Hz and 400V; when the rotation speed of the AC brushless motor 4 is 1800 rpm, the AVR power supply 3 provides the AC brushless motor 4 with a voltage of 60Hz and 440V.
[0019] The working principle of this utility model:
[0020] By adding an AVR power supply and a 50Hz-60Hz frequency automatic conversion unit, when the speed of the AC brushless motor is 1500-1600 rpm, the AVR power supply provides the AC brushless motor with a voltage of 50Hz and 400V, and when the speed of the AC brushless motor is 1800 rpm, the AVR power supply provides the AC brushless motor with a voltage of 60Hz and 440V, thereby realizing the protection of the AC brushless motor. A starter motor relay, a shutdown relay, a fault relay, a speed relay, a speed change relay, a frequency conversion relay, an automatic throttle and an AVR power supply relay and other structures are integrated on the traditional generator control panel, so that the control part has high stability, low failure rate, and is easy to maintain, which is convenient for people to use.
[0021] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A stable diesel electronic fuel injection environment-friendly engine, comprising a generator control board (1), characterized in that: The generator control panel (1) is integrated with a starter motor relay, a stop relay, a fault relay, a speed relay, a speed change relay, a frequency conversion relay, an automatic throttle and an AVR power supply relay; the AVR power supply relay is connected to an AVR power supply (3) via an automatic frequency conversion unit (2); the AVR power supply (3) is connected to an AC brushless motor (4) via a wire; and the generator control panel (1) is connected to a diesel engine (5) and a CPU controller (6).
2. A stable diesel electronic fuel injection environment-friendly engine according to claim 1, characterized in that: The frequency conversion range of the automatic frequency conversion unit (2) is 50 Hz-60 Hz.
3. A stable diesel electronic fuel injection environment-friendly engine according to claim 1, characterized in that: The generator control panel (1) is also integrated with a fuse, a power main relay, a preheating relay and a multi-state switch.
4. A stable diesel electronic fuel injection environment-friendly engine according to claim 2, characterized in that: When the rotation speed of the AC brushless motor (4) is 1500-1600 rpm, the AVR power supply (3) provides the AC brushless motor (4) with a voltage of 50 Hz and 400 V; when the rotation speed of the AC brushless motor (4) is 1800 rpm, the AVR power supply (3) provides the AC brushless motor (4) with a voltage of 60 Hz and 440 V.