RU2350775C1 - System of ice warming-up and automotive passenger compartment heating - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: proposed system of ICE warming-up and automotive passenger compartment heating comprises the following components, i.e. cooling fluid, engine pump, heater, heating unit with electrically-driven pump, check valves, cocks, temperature gauges and channels. One of the channels communicating the said pump outlet with the heating unit valve inlet accommodates an appliance to shut-off the channel allowing stepwise control of the fluid flow rate. Note here that the said appliance represents valve comprising body, spring-loaded control valve with drive electrically connected with the temperature gauge. The said drive shaft has cam with its convex camber being in contact with the control valve upper end face, as well as and inlet and outlet pipelines. Note also that, between the body and spring-loaded control valve arranged is inlet chamber communicating with the inlet pipeline and outlet chamber communicating with the outlet pipeline.

EFFECT: higher efficiency and reliability thanks to higher accuracy of control over fluid flow rate by shutting off channel.

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Description

The invention relates to systems and devices for heating internal combustion engines (engine) and heating the passenger compartment. Proposed heating system and heating the passenger compartment of vehicles can be used in power plants of all types of vehicles, equipped with an engine with liquid cooling and a cabin heater integrated in the cooling system.

A device is known to facilitate the launch of the engine (see patent RU N2268393, IPC F02N 17/04, publ. January 20, 2006 Bull. N2). Device to facilitate the launch of the engine contains a posistor heater installed in the fuel tank, engine oil and coolant temperature sensors connected to the inputs of the electronic control unit, and electromagnetic valves with actuators installed at the inlet to the coolant supply pump and at the outlet of the heat exchanger and electrically connected between themselves through a voltage converter of a thermoelectric generator, in particular, the fourth and fifth outputs of the electronic control unit are connected to the actuators of the electromagnetic valves with the possibility of reg Flow adjustment coolant d.v.s.

The disadvantages of the device are:

- low accuracy of flow control by solenoid valves;

- "freezing" during blockage of channels and self-oscillations during operation of electromagnetic valves.

All this reduces the efficiency and reliability of the device.

A known method and system for heating an internal combustion engine and heating a passenger compartment of a motor vehicle (see RF patent 2293207, IPC F02N 17/04, 02/10/2007 Bull. N4), taken as a prototype. DVS heating system and heating of the vehicle interior contains coolant, an engine pump, a heater, a heating unit with an electric pump, check valves, taps, channels, in one of which connecting the outlet from the electric pump and the entrance to the valve of the heating unit, a channel shutter is installed with the possibility of stepwise flow control liquids.

The disadvantages of the prototype are:

- low speed and accuracy of regulation of fluid flow by means of blocking the channel;

- "freezing" during blockage of channels and self-oscillations during operation of the channel overlap means.

The proposed invention solves the problem: improving the efficiency and reliability of the system.

The technical result obtained by the implementation of the invention is the speed of response and increase the accuracy of regulation of fluid flow by means of blocking the channel.

The specified technical result is achieved by the fact that in the heating system of the internal combustion engine and heating of the vehicle interior containing coolant, engine pump, heater, heating unit with electric pump, check valves, taps, temperature gauge, channels, in one of which connecting the outlet electric pumps and the entrance to the valve of the heating unit, a means for blocking the channel with the possibility of stepwise regulation of the flow of liquid is installed, new is that the means for blocking the channel is made the valve being simultaneously and overlapping means and dispensing orifice, comprising an inlet conduit, and a valve body with a drive electrically coupled to a temperature gauge on the shaft and having a cam, its convexity contacting the upper end of the spool.

At the moment of receipt of the signal from the temperature indicator, the sensor of which is mounted on the posistor heaters of the heating unit, the cam rotates to the required angle, the spool opens and the dosed amount of liquid under pressure enters through the gap from the inlet cavity to the outlet cavity so that particles of pollution, scale and scale cannot clog the gap, as they pass through this gap under pressure. The total liquid pressure at the outlet also decreases due to the periodicity of the spool. All this provides greater accuracy and speed of response, and also eliminates self-oscillations and blockage of channels, which helps to increase the efficiency and reliability of the device.

Thus, the proposed technical solution has a novelty and inventive step.

The essence of the proposed heating system of the internal combustion engine and heating of the vehicle interior is illustrated by drawings, where:

figure 1 shows a schematic electro-hydraulic diagram of the heating system of the engine and heating the passenger compartment;

figure 2 - diagram of the valve.

DVS heating system and heating the passenger compartment (Fig. 1) includes coolant, a shirt 1, a drain cock 2, an engine pump 3, a cabin heater 4, a heating unit 5, an electric pump 6, a temperature gauge 7, a fluid channel 8, check valves 9 and 10, taps 11, 12 and shutoff means — valve 13. Valve 13 (FIG. 2) includes an inlet pipe 14, a housing 15, a spring-loaded spool 16, a cam 17, a shaft 18, an actuator 19, an output pipe 20. Between the housing 15 and the spring-loaded spool 16 formed by the cavity of the inlet 21 associated with the inlet pipe 14 and the cavity of the outlet 2 2 associated with the outlet pipe 20.

DVS heating system and heating the passenger compartment works as follows. During the heating period, the liquid from the jacket 1 by the pump 3 and the electric pump 6 is supplied under pressure to the inlet pipe 14 of the valve 13. The spool 16 is inoperatively fixed so that the cavity 21 - fluid inlet is in the open position, and the cavity 22 - fluid outlet is closed. The moment and duration of the opening of the fluid drainage cavity depends on the design of the cam 17 mounted on the shaft 18, which is convex in contact with the upper end of the spool 16.

When the signal arrives at the actuator 19 from the temperature indicator 7, the sensor of which is mounted on the posistor heaters of the heating unit 5, the cam 17 is rotated to the required angle, the spool 16 is opened, and the dosed amount of liquid under pressure enters through the gap from the inlet cavity 21 to the outlet cavity 22 and then through the non-return valve 9 to the heating unit 5. After heating, the liquid through the non-return valve 10 enters the fluid channel 8 and then to the heater of the cabin 4 and the jacket 1.

The opening time of the windows of the spool 16 and the angle of the convex part of the cam 17 were calculated according to well-known formulas depending on the working pressure, temperature and fluid flow in the test system. For example, at a pressure of 32 MPa and a flow rate of 20.5 10 ^-5 m ³ / s, the cam convex angle is 58 °, and the valve opening time required to pass the fluid with a flow rate of 200 cm ³ / s is 0.02 s .

Claims (1)

A heating system of an internal combustion engine and heating of a vehicle interior containing coolant, an engine pump, a heater, a heating unit with an electric pump, check valves, taps, a temperature gauge, channels, in one of which connecting the outlet from the electric pump and the valve inlet of the heating unit, installed means for blocking the channel with the possibility of stepwise regulation of fluid flow, characterized in that the means for blocking the channel is made in the form of a valve including a housing, a spring-loaded spool with an actuator electrically connected to the temperature gauge and having a cam on the shaft that is convex in contact with the upper end of the spool, as well as an inlet pipe, an outlet pipe, and an inlet cavity connected to the inlet pipe and an outlet cavity connected between the body and the spring-loaded spool with outlet piping.

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