SU108463A1 - Device for adjusting the temperature of water in a car engine cooling system - Google Patents

Description

Devices for adjusting the temperature of water in an automobile engine cooling system, equipped with a thermostat-controlled device for starting and stopping the engine, are known. The disadvantage of these devices is their relatively low reliability.

The proposed device for controlling the temperature of the water is intended for the cooling system of a car engine equipped with pneumatic brakes.

The essence of the invention is that the thermostat is connected to a control valve that communicates the air braking system to the diaphragm chamber, the diaphragm of which carries contacts for switching on the ignition system, and the diaphragm magnetic chamber, the diaphragm of which controls the activation of the starter. Facilitation of engine start is achieved by injecting fuel into the engine manifold from a fuel chamber of small volume, connected through a cylinder to a diaphragm chamber controlling the contacts of the ignition system.

In order to prevent freezing of water in the cooling system in the event that the engine is not started, the cooling system is provided with a spring-loaded water drain valve held in the closed position by air pressure in the diaphragm chamber.

The drawing shows a diagram of the device.

The device works from the brake system of the car. Compressed air from the brake system flows through the air duct 1 to the distribution valve 2 controlled by cam 3 on axis 4. The latter is at one end equipped with a fork with spikes 5 and 6, one of which communicates with thermostat rod 7 of the thermostat 8. At the second end axis 4 carries lever 9 with a spring-loaded clamp 10. Axle 4 of cam 3 is loaded with a spring //.

The supply air duct / through the distribution valve 2 and the exhaust pipeline 12 is connected to two diaphragm chambers 13, 14. The bottom 16 of the chamber 13 loaded with the bottom 13 carries electrical contacts 17 on it to turn on the ignition. The bottom 18 of the chamber 14 (having a spring 19) is connected by a lever system 20 to a starter switch 21.

The compressed air supply pipe to the distribution valve / through the check valve 22 communicates with the diaphragm box 23, the diaphragm 24 of which is connected to the spring loaded water valve 26. The chamber 13 is calibrated by a hole 27 with a small volume fuel chamber 28 for a measured amount of fuel.

Fuel chamber 28 is connected to engine intake manifold 29 by pipe 30, and to carburetor float chamber 31 by calibrated channel 32. BnycKnoii engine collector 33 by pipe 34 is connected to diaphragm chamber 35, diaphragm 36 of which by rod 37 is connected to lever 38 on cam axis 4. Diaphragm chamber 39, communicated with pipeline 12 behind the distributor valve to two successively arranged calibrated openings 40 and 4J, is designed to control the closure of the distribution; the main valve. For this purpose, the diaphragm 43 of this chamber connected to the spring loaded 42 is provided at the free end with a fork 45 interacting with the lever 38 of the axis 4 and a spike 46 interacting with the stoppers.

The stem / thermostat is loaded with spring 47 and is equipped with three processes 48, 49 and 50 located at different heights. One of them 49 is designed to break the contacts 51 of the ignition circuit when the water temperature in the cooling system rises to the set value, the second 48 - to open the vent for air the check valve 52. The third 50 for opening the contacts 53 of the control lamp circuit 54. Reported

With the air line, the chamber 55 with the diaphragm 56 and the spring 57 is designed to turn on the siren when the pressure in the car’s braking system is set to a set (3 atm) value. For this purpose, the diaphragm 56 carries a stopper 58 holding a double-arm lever 60 loaded with a spring 59, one shoulder of which is carried by a stop valve 61 on the air duct approaching the siren 62. A rod 63 is connected to the double-shouldered lever 60, which controls, via a crank lever 64, the contacts 65 of the control lamp 54. The levers 66 and 67 are used to turn on the machine.

The device operates as follows.

When the water temperature in the cylinder head of the engine falls below 40 °, the thermostat rod 7 will move downward, freeing the appendage 5, and the axis 4 will be turned by a spring action // clockwise. At this moment, contacts 51 are closed, exhaust valve 21a is closed and distribution valve 2 is routed. Air through pipe 12 enters diaphragm chamber 13, the diaphragm 16 of which, having overcome spring pressure J5, closes contacts 17, turning on the engine ignition. Through a calibrated orifice 27, air will push a portion of the fuel from the fuel chamber 28 through conduit 30 to the engine manifold. At the same time the same pipeline 12 compressed air enters the chamber M, progpet diaphragm 18 and includes the starter.

When the engine is running, the rc view from the exhaust manifold 33 is transferred to chamber 35, diaphragm 36 will be propelled and there is no sweat behind rod 37. Valve 2 will close, piping will come through valve 21a with atmosphere and turn off the starter. The ignition switch 17 is held by the discharge in the chamber 35.

The engine is heated to a temperature of 80 °. When this temperature is reached, the thermostat process 49 on the rod 7 turns off

ignition. In the event that the engine does not start up for any reason, the starter is turned off after a few seconds as follows. Through calibrated holes 40 and 4 / within a few seconds the chamber 39 will be filled. The diaphragm 43 will be propelled and by means of a rod 44 with a plug 45 through the lever 38 will turn the axis 4 counter clockwise. This will entail closing valve 2 and venting air from line 12 through valve 21a.

The stopper W, interacting with the process 46 and a shaft 44, will keep the valve 2 closed and the valve 21a open.

As the air slowly exits chamber 59, shaft 44 will withdraw extension 46 from stopper W after a certain period of time (8-10 seconds) and axis 4 will be turned clockwise by spring with valve 2. The following starter will occur.

If, after several starter starts, the engine does not start, a siren will beep and the control light will come on.

The activation of the siren and the control lamp occurs when the pressure in the brake system drops to a certain, predetermined value. A pressure drop in the brake system will cause a pressure drop in chamber 55, deflection of the diaphragm 56 and turning on the siren 62. Simultaneously with the help of the rod 63 and the lever 64 the control light will turn on.

Through the siren, the air will come out of all the diaphragm chambers of the device, except chamber 23. Lisch, with a further decrease in temperature in the engine cooling system, the stem 7 of the thermostat with a process 48 opens the check valve 52, communicating the atmosphere through the chamber. This will entail opening the drain valve 26 and releasing water from the cooling system.

In this way, automatic control of the water temperature in the engine cooling system in winter and the release of water from the cooling system in the event of a starter or ignition system failure is ensured.

Subject invention

Claims (3)

1. A device for controlling the temperature of the water in the engine cooling system of an automobile with pneumatic brakes, equipped with a thermostat driven actuator for automatically starting and stopping the engine, characterized in that, in order to ensure greater reliability of the device, the thermostat is connected to a control valve informing an air braking system with a diaphragm chamber, the diaphragm of which carries contacts for switching on the ignition system, and with a diaphragm chamber whose diaphragm controls exception starter. 2. The form of the apparatus according to claim 1, characterized in that, in order to facilitate engine start-up, the diaphragm chamber controlling the ignition switch-on contacts is communicated with a calibrated orifice with a small volume fuel chamber for a measured portion of fuel injected into the engine manifold. 3. The device according to paragraphs. 1 and 2, characterized in that, in order to prevent water from freezing in the cooling system in case the engine is not floated after several starter starts, the water on the engine cooling system is provided with a spring-loaded release valve held in the closed position by the air pressure in the diaphragm valve. the chamber communicated with the atmosphere through a thermostat controlled valve. S; J