CN212656926U

CN212656926U - Vehicle low-temperature preheating starting control system

Info

Publication number: CN212656926U
Application number: CN202021011879.7U
Authority: CN
Inventors: 袁廷华; 辛周
Original assignee: HEFEI CHUANGYUAN VEHICLE CONTROL TECHNOLOGY CO LTD
Current assignee: HEFEI CHUANGYUAN VEHICLE CONTROL TECHNOLOGY CO LTD
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-03-05
Anticipated expiration: 2030-06-04

Abstract

The utility model discloses a vehicle low temperature preheats start control system, including controlling means, the engine, the battery, auxiliary engine, the generator, electric heater unit and temperature sensor, auxiliary engine, the engine all is connected with controlling means, auxiliary engine, the engine is connected with the generator respectively and is driven the rotatory electricity generation of generator, the generator is connected with controlling means's power input end, the port that charges of battery, electric heater unit's power supply port all is connected with the power output end that controlling means corresponds, temperature sensor sets up on waiting to heat the vehicle start subassembly and all is connected with controlling means, electric heater unit is used for preheating the vehicle start subassembly. The utility model provides an electricity before the engine start preheats, has ensured that the battery has sufficient electric power output ability.

Description

Vehicle low-temperature preheating starting control system

Technical Field

The utility model relates to a vehicle start control technical field specifically is a vehicle low temperature preheats start control system.

Background

In low temperature and cold winter environments, vehicle engine starting is difficult because: the viscosity of engine oil of the engine is high, so that starting resistance moment is increased; the internal resistance of the storage battery is increased at low temperature, and the terminal voltage is reduced to reduce the starting power; the air inlet temperature is low, the starting is difficult, and the fuel spontaneous combustion temperature is difficult to reach after the diesel engine is compressed. In order to ensure reliable starting of the engine at low temperatures, low-temperature starting preheating devices are provided on most diesel engines and a few gasoline engines.

The low temperature heating device of the diesel engine mainly comprises an air inlet heating device, an oil pan heating device, a storage battery heating device and a cylinder cover heating device. The traditional intake air preheating mostly adopts a flame heater, and most of heating sources of other parts are supplied by heat generated by fuel combustion, for example, an engine body is heated by the fuel heater and an attached water pump circulation.

The fuel oil heating has the problems that a heating pipeline is not easy to arrange, a heating device has a complex structure, and only a plurality of main points are often heated, and because the heating is incomplete, the viscosity of engine oil in a part of areas at low temperature is high, the mechanical friction is high, the low-temperature ignition time is long, the starting is difficult, even the starting fails, and meanwhile, the engine and parts are damaged. Another disadvantage of fuel heating is the low heating efficiency. Because most of the heating has long heat conduction distance, some heat is transferred from the outside to the inside through the shell, and as a result, the heating is slow and the heat consumption is high. For example, the coolant is heated by circulating the entire coolant, and oil heating is performed by transferring heat from the outside to the inside through the oil casing. Namely, the traditional mode taking fuel as a heating source has complex structure, large occupied space and inflexible heating and control.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a vehicle low temperature preheats start control system, provides the electricity before the engine start and preheats, and the guarantee battery has sufficient electric power output ability.

The technical scheme of the utility model is that:

a low-temperature preheating starting control system for a vehicle comprises a control device, an engine, a storage battery, an auxiliary engine, a generator, an electric heating device and a temperature sensor, wherein the auxiliary engine and the engine are connected with the control device, the auxiliary engine and the engine are respectively connected with the generator to drive the generator to generate electricity in a rotating manner, the generator is connected with a power supply input end of the control device,

the charging port of the storage battery and the power supply port of the electric heating device are connected with the power supply output end corresponding to the control device, the temperature sensor is arranged on the vehicle starting assembly to be heated and is connected with the control device, and the electric heating device is used for preheating the vehicle starting assembly.

The generator comprises a preheating generator and a starting generator, the preheating generator is connected with the auxiliary engine, the auxiliary engine drives the preheating generator to generate electricity, the starting generator is connected with the engine, the engine drives the starting generator to generate electricity, and the preheating generator and the starting generator are respectively connected with the corresponding power input ends of the control device.

The engine is connected with the engine ECU, and the engine ECU is connected with the control device.

The control device comprises a remote communication module, the remote communication module is used for being in remote communication connection with a vehicle handheld switch, and the vehicle handheld switch remotely controls the control device to enable the auxiliary engine to be started to achieve preheating.

The utility model has the advantages that:

the utility model is provided with the auxiliary engine, the auxiliary engine is adopted to drive the generator to supply power to the electric heating device and the storage battery, the electric heating device realizes the preheating of the engine, the appearance design of the electric heating device and the introduction of the power supply are flexible and convenient, and therefore, the electric heating device can be installed in more positions; meanwhile, the electric heating device is flexible to control and manage, and the heating of each part is convenient to coordinate and synchronize; meanwhile, the heat source of the electric heating device is convenient to be directly led to the area to be heated, so that the efficiency is high and the speed is high; the electric heating device is adopted to realize intake air preheating on the electronic type preheating plug, the heating effect of the electric heating device exceeds that of fuel oil preheating, and the heating time of the intake air temperature from minus 30 degrees to plus 800 degrees is only second grade; the utility model discloses a low temperature preheats the battery and supplements sufficient electric power for the battery, provides important guarantee for low temperature starting engine, guarantees simultaneously that battery electric power is sufficient, and not low temperature environment (the electrolyte temperature of battery heats more than zero degree usually) for the terminal voltage decline of battery is lower when starting engine, and the engine of being convenient for starts.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of an integrated connection structure of an auxiliary engine and a generator in embodiment 1 of the present invention.

Fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1, a low-temperature preheating start control system for a vehicle comprises a control device 1, an engine 2, a storage battery 3, an auxiliary engine 4, a generator 5, an electric heating device and a temperature sensor, wherein the auxiliary engine 4 is connected with the control device 1, the engine 2 is connected with an engine ECU 6, the engine ECU 6 is connected with the control device 1, the auxiliary engine 4 and the engine 2 are respectively connected with the generator 5 to drive the generator 5 to generate electricity in a rotating manner, the generator 5 is connected with a power input end of the control device 1, a charging port of the storage battery 3 and a power supply port of the electric heating device are respectively connected with a power output end corresponding to the control device 1, the temperature sensor comprises a storage battery temperature sensor 71, an engine temperature sensor 72 and an air inlet electric preheating plug temperature sensor 73 which are respectively connected with the control device 1, and the electric heating device comprises a storage battery heating device 81, An engine heating device 82 and an intake air electric glow plug heating device 83 provided on the engine 2; the control device 1 is a microprocessor with a Central Processing Unit (CPU) as a center, and comprises a Read Only Memory (ROM) for storing processing programs, a Random Access Memory (RAM) for temporarily storing data, an input/output port, a communication port and a remote communication module, wherein the remote communication module is used for being in remote communication connection with a vehicle hand-held switch, and the vehicle hand-held switch remotely controls the control device 1 to enable an auxiliary engine 4 to be started to realize preheating.

Referring to fig. 2, the engine 2 and the generator 5 are in power transmission connection through a first one-way clutch 9, and the auxiliary engine 4 and the generator 5 are in power connection through a second one-way clutch 10 to form an integrated connection structure; the inner ring of the first one-way clutch 9 is rigidly connected with the generator 5, the outer ring is rigidly connected with the belt pulley 11, the belt pulley 11 is connected with the engine 2 through a belt, and the working logic of the first one-way clutch 9 is as follows: when the rotating speed of the inner ring in the clockwise (or anticlockwise) direction is greater than that of the outer ring in the clockwise (or anticlockwise) direction, the inner ring freely rotates beyond the outer ring, and when the rotating speed of the outer ring in the clockwise (or anticlockwise) direction is greater than that of the inner ring, the outer ring forcibly drives the inner ring to rotate; the inner ring of the second one-way clutch 10 is rigidly connected with the auxiliary engine 4, the outer ring is rigidly connected with the generator 5, and the working logic of the second one-way clutch 10 is as follows: when the rotating speed of the inner ring in the clockwise (or anticlockwise) direction is greater than that of the outer ring in the clockwise (or anticlockwise) direction, the inner ring forcibly drives the outer ring to rotate, and when the rotating speed of the outer ring in the clockwise (or anticlockwise) direction is greater than that of the inner ring, the outer ring exceeds the inner ring to rotate freely.

A control method of a vehicle low-temperature preheating starting control system comprises the following steps:

after the vehicle is started, the control device 1 firstly acquires the temperature value of a vehicle starting component through the storage battery temperature sensor 71, the engine temperature sensor 72 and the air inlet electric preheating plug temperature sensor 73, when any temperature value is lower than a set temperature value, the auxiliary engine 4 is started to drive the generator 5 to generate electricity, after the electric energy output by the generator 5 is distributed through the control device 1, the storage battery heating device 81, the engine heating device 82, the air inlet electric preheating plug heating device 83 and the storage battery 3 are respectively supplied with electricity, so that the preheating of the storage battery 3, the engine 2 and the air inlet electric preheating plug and the charging of the storage battery 3 are realized, when the temperatures acquired by the storage battery temperature sensor 71, the engine temperature sensor 72 and the air inlet electric preheating plug temperature sensor 73 are higher than the set temperature value, the control device 1 stops driving the auxiliary engine 4 and simultaneously starts the engine, the engine 2 continues to drive the generator 5 to rotate and supplies power to the battery 3 through the control device 1.

The heating and charging of the storage battery 3 by the control device 1 are controlled and realized according to the characteristic rule of the storage battery 3, and are influenced by the heat conduction coefficients of the shell of the storage battery 3 and the electrolyte of the storage battery 3, the temperature rise of the storage battery 3 is a slow process, the storage battery 3 is damaged due to local overheating caused by too fast electric heating, the internal resistance values of the storage battery are different and the power receiving capacity is different when the temperature of the electrolyte of the storage battery 3 is different, so that the input current of a power supply or the terminal voltage of the storage battery heating device 81 is controlled according to the heating characteristic of the storage battery 3 and the charging characteristic at different temperatures in the preheating and charging stages of the storage battery 3. The rule for controlling the electric heating device is as follows: the input voltage (or the passing current) of each electric heating device is adjusted according to the intermittent power supply or the PWM control rule; the general rule for controlling the current magnitude is as follows: and the change of the current value is realized by a PWM control method through filtering.

The control device 1 is responsible for appropriately distributing the magnitude of the drive power and the start-up time when supplying the warm-up power and the charging power to the storage battery. The method comprises the following steps: the components with large heat capacity and slow temperature rise are started first, and the temperature rise time for the control device 1 to comprehensively distribute power to enable each component to reach the required heating value is approximately the same as the time for charging the storage battery to supplement energy.

The auxiliary engine 4 can be selected from a single-cylinder gasoline engine, a turbine engine, an ether engine and the like; the body of the auxiliary engine 4, the fuel oil, the sealing oil, and the like are disposed so as to satisfy an extremely low temperature operating environment, the auxiliary engine 4 is low in power, and the battery 3 disposed in the vehicle can be started up to operate the auxiliary engine 4 extremely easily.

Example 2

Referring to fig. 3, a low-temperature preheating start control system for a vehicle comprises a control device 1, an engine 2, a storage battery 3, an auxiliary engine 4, a preheating generator 51, a starter generator 52, an electric heating device and a temperature sensor, wherein the auxiliary engine 4 is connected with the control device 1, the engine 2 is connected with an engine ECU 6, the engine ECU 6 is connected with the control device 1, the preheating generator 51 and the auxiliary engine 4 are in an integrated connection structure, the preheating generator 51 is driven by the auxiliary engine 4 to generate electricity, the starter generator 52 is connected with the engine 2 and driven by the engine 2 to generate electricity, the preheating generator 51 and the starter generator 52 are respectively connected with a power input end corresponding to the control device 1, a charging port of the storage battery 3 and a power supply port of the electric heating device are both connected with a power output end corresponding to the control device 1, the temperature sensors comprise a storage battery temperature sensor 71, an engine temperature sensor 72 and an intake air electric glow plug temperature sensor 73 which are respectively connected with the control device 1, and the electric heating device comprises a storage battery heating device 81 arranged on the storage battery 3, an engine heating device 82 arranged on the engine 2 and an intake air electric glow plug heating device 83; the control device 1 comprises a remote communication module which is used for being in remote communication connection with a vehicle hand-held switch, and the vehicle hand-held switch remotely controls the control device 1 to enable the auxiliary engine 4 to be started to realize preheating.

after the vehicle is started, the control device 1 firstly acquires the temperature value of a vehicle starting component through the storage battery temperature sensor 71, the engine temperature sensor 72 and the air inlet electric glow plug temperature sensor 73, when any temperature value is lower than a set temperature value, the auxiliary engine 4 is started to drive the glow plug heater 51 to generate electricity, after the electric energy output by the glow plug heater 51 is distributed by the control device 1, the storage battery heater 81, the engine heater 82, the air inlet electric glow plug heater 83 and the storage battery 3 are respectively supplied with electricity, so as to realize the preheating of the storage battery 3, the engine 2 and the air inlet electric glow plug and the charging of the storage battery 3, when the temperatures acquired by the storage battery temperature sensor 71, the engine temperature sensor 72 and the air inlet electric glow plug temperature sensor 73 are higher than the set temperature value, the control device 1 stops driving the auxiliary engine 4, at the same time, the engine 2 is started, and the engine 2 drives the starter generator 52 to rotate and supplies power to the storage battery 3 through the control device 1.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A low-temperature preheating starting control system for a vehicle is characterized in that: including controlling means, engine, battery, auxiliary engine, generator, electric heater unit and temperature sensor, auxiliary engine, engine all be connected with controlling means, auxiliary engine, engine be connected with the generator respectively and drive the rotatory electricity generation of generator, the generator be connected with controlling means's power input end, the power output end that charging port, electric heater unit's of battery all correspond with controlling means be connected, temperature sensor set up on waiting the vehicle starting component of heating and all be connected with controlling means, electric heater unit be used for preheating vehicle starting component.

2. The vehicle low-temperature warm-up start control system according to claim 1, characterized in that: the generator comprises a preheating generator and a starting generator, the preheating generator is connected with the auxiliary engine, the auxiliary engine drives the preheating generator to generate electricity, the starting generator is connected with the engine, the engine drives the starting generator to generate electricity, and the preheating generator and the starting generator are respectively connected with the corresponding power input ends of the control device.

3. The vehicle low-temperature warm-up start control system according to claim 1, characterized in that: the engine is connected with the engine ECU, and the engine ECU is connected with the control device.

4. The vehicle low-temperature warm-up start control system according to claim 1, characterized in that: the control device comprises a remote communication module, the remote communication module is used for being in remote communication connection with a vehicle handheld switch, and the vehicle handheld switch remotely controls the control device to enable the auxiliary engine to be started to achieve preheating.