A bus adaptive heating system

Abstract

This utility model relates to the field of bus thermal management technology and provides a bus adaptive heating system, including a sensor module, a controller, a power distribution module, a main motor and an oil pump. The sensor module includes a barometric pressure sensor, which is connected to the controller and then to the power distribution module via a CAN bus. The power distribution module is connected to the main motor and the oil pump, which can automatically adjust the air intake and fuel injection volume at different altitudes.

Description

Technical Field

[0001] This utility model relates to the field of bus thermal management technology, specifically to a bus adaptive heating system. Background Technology

[0002] Currently, due to the high power consumption of PTC electric heaters, the heaters used in bus heating systems are still mainly electric injection heaters.

[0003] However, the currently used electronic fuel injection heaters can only be used in plains areas. When the altitude exceeds 2,000 meters, black smoke and carbon buildup will occur. The only way to avoid this problem is to disassemble the engine head, replace it with a smaller fuel injector, and manually adjust the air intake. However, this will reduce the heat output. Once the vehicle is operating across regions, the driver will face the problem of frequently replacing the fuel injector and manually adjusting the air intake. Otherwise, when operating in plains areas, the flame is easy to go out, the combustion is unstable, and harmful gases will be produced. These gases will enter the passenger compartment and affect the health of the passengers. Frequent replacement of fuel injectors and adjustment of air intake also pose certain safety hazards. The existing electronic fuel injection heaters cannot adapt to altitude. Utility Model Content

[0004] The purpose of this invention is to provide an adaptive heating system for buses that can solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model proposes an adaptive heating system for buses, including a sensor module, a controller, a power distribution module, a main motor, and an oil pump. The sensor module includes a pressure sensor, which is connected to the controller and then connected to the power distribution module via a CAN bus. The power distribution module is connected to the main motor and the oil pump.

[0006] Further configuration includes a photosensitive sensor, an oxygen sensor, an inlet water temperature sensor, an outlet water temperature sensor, and an oil temperature sensor connected to the controller.

[0007] Further configuration involves installing a photosensitive sensor inside the heater; the photosensitive sensor is a photoresistor.

[0008] A further configuration involves installing the oxygen sensor at the exhaust port of the heater.

[0009] Further configuration involves installing the inlet water sensor and the outlet water sensor at the inlet and outlet ends of the heater, respectively.

[0010] Further configuration involves placing the oil temperature sensor on the oil inlet pipe of the heater.

[0011] Further configuration involves the controller being connected to a parallel power supply branch, which is equipped with a switch.

[0012] Further configuration involves the power distribution module connecting the electric heating oil pipe filter and the heating cup.

[0013] Further configuration involves connecting the controller to an instrument display.

[0014] Further configuration: the pressure sensor is a pressure-sensitive sensor.

[0015] The beneficial effects of one or more of the above technical solutions:

[0016] This utility model provides an adaptive heating system for buses based on altitude sensing. When the altitude changes, the controller detects the change in altitude through a barometric pressure sensor, determines the appropriate fuel-air ratio according to the program settings, and sends the corresponding motor speed and fuel pump speed to the power distribution module. The power distribution module controls the operation of the motor and fuel pump using PWM speed regulation, which can automatically adjust the air intake and fuel injection volume at different altitudes. There is no need to manually replace the fuel injectors or adjust the air intake opening, which can reduce the driver's operation and ensure driving safety. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the power distribution module of this utility model.

[0020] In the diagram, 1 is the sensor module; 11 is the air pressure sensor; 12 is the photosensitive sensor; 13 is the oxygen sensor; 14 is the inlet water temperature sensor; 15 is the outlet water temperature sensor; and 16 is the oil temperature sensor.

[0021] 2 controllers;

[0022] 3. Power distribution module; 31. Transistor; 32. Resistor 1; 33. Resistor 2; 34. Resistor 3; 35. Switch K1; 36. Transistor 1; 37. Transistor 2; 38. Capacitor 1; 39. Capacitor 2; 40. Capacitor 3; 41. Capacitor 4; 43. Transistor 3;

[0023] 4. Main motor; 5. Oil pump; 6. CAN bus; 61. CAN_H; 62. CAN_L; 7. Power supply branch; 8. Switch; 9. Electric heating oil pipe filter and heating cup; 10. Instrument display. Detailed Implementation

[0024] The specific implementation of this embodiment will now be described with reference to the accompanying drawings.

[0025] Reference Figure 1A passenger vehicle adaptive heating system, referring to Figure 1 It includes a sensor module 1, a controller 2, a power distribution module 3, a main motor 4, and an oil pump 5. The sensor module 1 includes a pressure sensor 11, which is connected to the controller 2 and then connected to the power distribution module 3 via a CAN bus 6. The power distribution module 3 is connected to the main motor 4 and the oil pump 5.

[0026] The sensor module 1 also includes a photosensitive sensor 12, an oxygen sensor 13, an inlet water temperature sensor 14, an outlet water temperature sensor 15, and an oil temperature sensor 16, all connected to the controller 2.

[0027] The photosensitive sensor 12 is installed inside the heater. The photosensitive sensor 12 is a photoresistor. Changes in the flame will cause changes in resistance, which are transmitted to the controller 2 to detect whether ignition is successful and whether the flame is stable.

[0028] The oxygen sensor 13 is installed at the exhaust port of the heater. Through the oxygen sensor 13, the exhaust composition can be detected in real time, the oil-air ratio can be continuously adjusted, closed-loop control can be achieved, and strict control of emissions can be achieved.

[0029] The inlet water sensor and outlet water sensor are installed at the inlet and outlet of the heater, respectively, and transmit the water temperature information to the controller 2. The controller 2 controls the heater to start and stop according to the preset logic based on the water temperature.

[0030] The oil temperature sensor 16 is arranged on the oil inlet pipe of the heater. By detecting the oil temperature, it sends the signal to the controller 2. The controller 2 issues a control command for oil circuit heating according to the preset program when the oil temperature is lower than the threshold and stops sending the command when the oil temperature is higher than the threshold.

[0031] The controller 2 is connected to a parallel power supply branch 7, which is equipped with a switch 8. The system is turned on and off by turning the switch 8 on and off.

[0032] The power distribution module 3 connects to the electric heating oil pipe filter and the heating cup 9. The power distribution module 3 controls the electric heating oil pipe and the filter heating cup to preheat the fuel. The power distribution module includes a main motor circuit and an oil pump circuit connected to the CAN bus. The main motor circuit and the oil pump circuit are connected to the positive and negative terminals of the power supply through CAN_H and CAN_L lines, respectively. The main motor circuit is equipped with capacitor 138. A resistor 132 is connected in parallel with capacitor 1. A transistor 1 is connected in series with resistor 132. Transistor 1 is connected to resistor 2. Resistor 2 is connected to transistor 2. Transistor 2 is connected to switch K1. The output terminal of switch K1 is connected to capacitor 2 and capacitor 3, respectively. The output terminal of switch K1 is connected to transistor 31 through resistor 3. The output terminal of transistor 31 is connected to transistor 3. A capacitor 4 is connected in parallel with transistor 3. The main motor is connected in parallel with capacitor 4.

[0033] The controller 2 is connected to the instrument display 10. The working status and fault conditions of the heating system are transmitted to the instrument display module through the controller 2, and can be displayed intuitively on the vehicle instrument panel.

[0034] The air pressure sensor 11 is a pressure-sensitive sensor that obtains the actual altitude of the vehicle's operation by sensing changes in air pressure.

[0035] The system works as follows:

[0036] Altitude is detected by air pressure sensor 11, and emission levels are determined by emission levels detected by emission sensor. The flame of fuel combustion is detected in real time by photosensitive sensor 12. Based on different detection values, controller 2 sends the motor speed signal and fuel pump 5 speed signal corresponding to the preset air intake and fuel injection volume to power distribution module 3 via CAN communication. Power distribution module 3 adjusts the speed of motor and fuel pump 5 via PWM to accurately mix fuel and air. Fuel temperature is detected by fuel temperature sensor 16, and controller 2 sends a fuel heating signal to power distribution module 3 via CAN communication. Power distribution module 3 controls the electric heating oil pipe and filter heating cup to preheat the fuel. Through the above measures, fuel and air can be fully mixed, fuel can be fully preheated, and closed-loop control can be achieved throughout the process, ultimately enabling altitude self-adaptation.

[0037] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A passenger vehicle adaptive heating system, characterized by, It includes a sensor module, a controller, a power distribution module, a main motor, and an oil pump. The sensor module includes a pressure sensor, which is connected to the controller and then connected to the power distribution module via a CAN bus. The power distribution module is connected to the main motor and the oil pump.

2. A self-adapting heating system for a passenger vehicle according to claim 1, characterized in that, The sensor module also includes a photosensitive sensor, an oxygen sensor, an inlet water temperature sensor, an outlet water temperature sensor, and an oil temperature sensor that are connected to the controller.

3. A self-adapting heating system for a passenger vehicle according to claim 1, wherein, The photosensitive sensor is installed inside the heater; the photosensitive sensor is a photoresistor.

4. A self-adapting heating system for a passenger vehicle according to claim 1, wherein, The oxygen sensor is installed at the exhaust port of the heater.

5. A self-adapting heating system for a passenger vehicle according to claim 1, wherein, The inlet and outlet water sensors are installed at the inlet and outlet ends of the heater, respectively.

6. A self-adapting heating system for a passenger vehicle according to claim 1, wherein, The oil temperature sensor is located on the oil inlet pipe of the heater.

7. A self-adapting heating system for a passenger vehicle according to claim 1, wherein, The controller is connected to a parallel power supply branch, and the power supply branch is equipped with a switch.

8. A self-adapting heating system for a passenger vehicle according to claim 1, wherein, The power distribution module connects to the electric heating oil pipe filter and the heating cup.

9. A self-adapting heating system for a passenger vehicle according to claim 1, wherein, The controller is connected to the instrument display.

10. A self-adapting heating system for a passenger vehicle according to claim 1, characterized in that, The air pressure sensor is a pressure-sensitive sensor.

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