JPH0127934Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a heating system for a vehicle, and in particular to a heating system for a vehicle suitable for economically heating the interior of a vehicle when the vehicle is stopped. be.

[Conventional technology]

2. Description of the Related Art In vehicles such as automobiles, the interior of the vehicle is heated by exchanging heat with air using engine cooling water as a heat source. In this way, by taking the heat of the engine coolant into the vehicle interior as a heat source and heating the vehicle interior, the vehicle interior can be heated without providing a heating device with a separate heat source while the engine is running. However, with the method of heating the passenger compartment using the heat of engine coolant,
When the engine is stopped, the interior of the vehicle cannot be heated, so when the occupants of a truck or the like take a nap in a bed, the engine is run at idle to heat the interior of the vehicle, which increases fuel consumption.

Conventionally, when taking a nap in a vehicle such as a truck, a sheet 10 containing an electric heater as shown in FIG. 2 is spread on the bed or the like to heat the bed. A heating wire 12 is woven into the sheet 10, and the heating wire 12 is connected to a plug 20 via a cable 14, a controller 16, and a cable 18. The heating wire 12 includes a plug 20,
Cable 18, controller 16, cable 14
Electric power is supplied through the heating wire 12, and the seat 10 can be heated by heating the heating wire 12. That is, when the plug 20 is inserted into the cigarette lighter socket in the driver's seat, power from the battery is supplied to the heating wire 12 via the plug 20, the cable 18, the controller 16, and the cable 14, and the power from the battery is used. The seat 10 can be heated by heating the seat 10. Further, by adjusting the controller 16, the temperature of the seat 10 can be automatically adjusted.

In this way, in the case of the heating device shown in FIG. 2, heating can be performed using electric power from the battery even when the engine is stopped.

[The problem that the idea is trying to solve]

However, heating using battery power does not provide sufficient heating over a long period of time because the battery capacity is small.

There is also a control device for a vehicle heating system disclosed in Japanese Utility Model Application No. 57-32505, which operates the engine at idle when the vehicle is stopped.
By controlling the amount of fuel injection, the temperature inside the vehicle is kept constant, but it is not possible to provide sufficient economical heating. In addition, JP-A-52-
No. 53337 exists, but there is a risk that harmful gases may be introduced into the vehicle interior, and there are disadvantages such as cold air being introduced.

The present invention was developed in view of the above-mentioned conventional problems, and its purpose is to provide a heating system for vehicles that can provide economical and clean heating by using engine cooling water when the vehicle is stopped, and that can also properly heat the vehicle. The goal is to provide equipment.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a control system installed in a cooling water conduit that introduces the cooling water to the heater in a vehicle heating system that introduces engine cooling water into a heater in the vehicle interior for heating. The control valve is opened by a heating command from the stoppage detection means, the room temperature detection means, and the heating command means. The control unit is equipped with a control unit that outputs a drive signal to the engine starting device and the engine operating device, closes the control valve in response to a heating stop command, and outputs a stop signal to the engine operating device.

[Effect]

When the stop detection means is operated while the engine is stopped, and the heating command means is operated, the control valve is opened, the engine starter is activated, the engine is driven, and engine cooling water is introduced into the heater. The vehicle interior is heated.

On the other hand, if the temperature inside the vehicle exceeds the upper limit set value,
The control valve is closed and the engine is stopped,
Introduction of engine cooling water to the heater is stopped, and heating of the vehicle interior is stopped.

[Embodiment] Hereinafter, a preferred embodiment of the present invention will be described based on FIG.

In the figure, an engine 22 includes a thermostat 24 and a pipe 2 that constitute the engine's cooling water circulation system.
6, a bypass pipe 27, a radiator 28, and a pipe 30 are provided. This cooling water circulation system cools the engine 22 by circulating cooling water as the engine 22 operates, and sends the cooling water whose temperature has increased due to cooling to the radiator 28 via the thermostat 24 and the pipe 26. The cooling water in the radiator 28 is cooled by the operation of the fan 32, and the cooled cooling water is returned to the engine 22 via the pipe 30 and the water pump 31 to cool each part of the engine 22 again. There is.

On the other hand, the cooling water that has cooled the engine 22 is introduced into the cab 34, and the inside of the cab 34 is heated by the heat of this cooling water. system) 31 is provided. This heater 36 includes a pipe 38, a hot water pipe 40,
42 and a pipe 44, a pipe 38 is connected to a cooling water supply channel of the engine 22, and a pipe 44 is connected to the water pump 31. Further, the hot water pipe 40 is provided at the bottom of the floor 46 and is piped onto the floor panel 50 via a heat insulating material 48, and the hot water pipe 42 is inserted into the bottom of the bed 52 and is connected to the heat insulating material 54.
It is piped onto the floor panel 50 via.

In this way, the heater 36 supplies the cooling water that has cooled the engine 22 to the hot water pipes 40 and 4 through the pipe 38.
The heat of the introduced cooling water heats the inside of the cab 34 via the floor 46 and the bed 52, and the cooling water heat-exchanged inside the cab 34 is transferred to the pipe 44.
The water is returned to the water pump 31 via the water pump 31. In addition, there is a pipe 38 in the middle of the pipe 38.
A heater cock 56 is inserted as a control valve to close the. Also, inside the cab 34, the cab 3
an operation switch (heating command means) 58 that commands heating inside the cab 34, a room temperature sensor (room temperature detection means) 60 that detects the room temperature inside the cab 34, and a hand brake 62.
A hand brake switch (stop detection means) 64 is provided to detect the operation of the vehicle. Output signals from the operation switch 58, the room temperature sensor 60, and the handbrake switch 64 are each supplied to a control unit 66.

The control unit 66 is composed of a microcomputer that operates using a battery 68 as a power source, and controls an operation switch 58 and a room temperature sensor 6.
0. Based on the output signal of the handbrake switch 64, the opening of the heater cock (control valve) 56 and the driving of the starter 70 and injection pump 72 can be controlled. That is, when the engine 22 is stopped, the handbrake 62 is operated, the handbrake switch 64 outputs a signal, and the operation switch 58 outputs a signal, the control unit 66 detects the output signal from the room temperature sensor 60. If it is above the set value, starter 70;
Injection pump 72 and heater cock 5
6 to start and operate the engine 22 and control the opening of the heater cock 56. After the start of the engine 22 is confirmed by a limit switch in the engine tachometer 65, the operation of the starter 70 is turned off. When the engine 22 starts, the heater cooker 5
When valve 6 is opened, the cooling water that has cooled the engine 22 is supplied to the hot water pipes 40, 42, and this cooling water warms the floor 46 and bed 52, as well as heating the inside of the cab 34.

Further, in this embodiment, the opening degree of the heater cock 56 is controlled according to the output signal of the room temperature sensor 60; As a result, the temperature inside the cab 34 can be maintained at the set temperature.

Furthermore, in this embodiment, when the value of the output signal from the room temperature sensor 60 exceeds the upper limit set value, a control signal is output from the control unit 66 to the injection pump 72 and the heater cock 56, and the injection pump is activated. Fuel is cut off by the pump 72, the heater cock 56 is controlled to open, and the engine 22 is stopped. By controlling the start and stop of the engine 22 in this manner, the interior of the cab 34 can be heated efficiently and appropriately. In addition, hot water pipes 40, 42
are provided on the floor 46 and the bed 52, heating is performed with good thermal efficiency, and the inside of the cab 34 is heated without being contaminated with dirty air.

[Effect of idea]

As explained above, according to the present invention, the cooling water that has cooled the engine is introduced into the passenger compartment, and the cooling water supply channel is controlled by the control valve and the start and stop of the engine depending on the temperature in the passenger compartment, which improves efficiency. Excellent effects such as efficient heating, economical heating, clean heating without polluting the air, and appropriate heating can be obtained.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram showing one embodiment of the present invention;
The figure is a configuration diagram of a conventional vehicle heating system. 22... Engine, 34... Cab, 36...
Heater, 40, 42...Hot water pipe, 56...Heater kettle, 58...Operation switch, 60...Room temperature sensor, 64...Hand brake switch, 6
6...Control unit, 70...Starter, 72...Injection pump.

Claims (1)

[Scope of utility model registration request] A vehicle heating system that introduces engine cooling water into a heater in a vehicle interior for heating the vehicle, includes a control valve provided in a cooling water conduit that introduces the cooling water into the heater, and a stop detection means that detects a vehicle stop. and a room temperature detection means for detecting the temperature inside the vehicle interior, a heating command means, and a heating command from the stop detection means, the room temperature detection means, and the heating command means to open the control valve and to control the engine starting device and the engine operating device. A heating device for a vehicle, comprising a control unit that outputs a drive signal, closes a control valve in response to a heating stop command, and outputs a stop signal to an engine operating device.