FI74524B - FOERFARANDE OCH APPARATUR FOER UPPVAERMNING AV KYLVAETSKA FOER FOERBRAENNINGSMOTOR. - Google Patents

Description

74524

METHOD AND APPARATUS COMBUSTION ENGINE COOLANT SYSTEM

LÄJITTÄMISEKSI

The invention relates to a method and an apparatus for heating a coolant of an internal combustion engine by conducting a liquid preheated in a heating system outside the engine without obstruction to the cooling system of the engine.

In cold conditions, where the outside temperature may fall below -50 ° 0, the starting pressure of an internal combustion engine, especially a diesel engine, is ·. uncertain. In addition, the running speed may damage the engine, in which case it will consume the engine unreasonably. Therefore, finishing the engine with auxiliary voltage, towing, or a more flammable fuel, such as an ether mixture, should be avoided. Engine preheating has been found to be a good way to facilitate starting. This can be done by heating either the engine oil or the coolant. Liquid-cooled engines more commonly cool coolant than oil.

Heating normally takes place most commonly using an electric heater connected to either a water hose or a cylinder block. The solution is functional but connected to the mains. The battery voltage is not sufficient to produce the required power.

Coolant11 ”can also be heated by its own burner with a four-burner heater that runs on either petrol or diesel. The disadvantages of the device are difficult installation and maintenance, as well as a remarkably high price.

When the engine is stopped for a relatively short time, i.e. a few hours, it is possible to store the waste heat of the engine by conducting hot coolant into a thermally insulated tank, the so-called to a heat accumulator, from which the warm liquid is returned to the engine before starting. Such a solution is presented, for example, in Swedish Patent Publication No. V: / + 548. The disadvantage is the large size of the structure, which makes it difficult to install it in passenger cars, as well as the limited time required.

U.S. Patent Nos. 3,378,728, 4,031,823, 4,303,541 and 4,579,095 to U.S. Patent Nos. 2,74524 discloses solutions in which a coolant is heated by introducing hot coolant from another warm engine into the engine. In this case, however, one is dependent on another vehicle, which is not always available.

German Patent Publication No. 728,139, American Patent Publication No. 2,718,400 and Swedish Publication No. 433,760 disclose systems in which fluid heated in a separate heater outside the engine is led to the engine coolant space. the cuts are Vempelis and are only suitable for fixed installation, such as car depots, as shown in the above-mentioned Swedish publication.

The solution according to the present invention avoids the disadvantages of the above-mentioned systems. The solution is also cost-effective, and applicable to existing equipment.

The characteristic features of the invention appear from the claims.

In the following, the invention is explained in more detail with reference to the accompanying drawings.

Fig. 1 shows a vehicle-caravan combination and a set of equipment.

Fig. 2 shows a motor to be heated.

In the method according to the invention, the basic elements are a caravan / motorhome (1) equipped with its own mains-independent liquid central heating system, usually running on mains gas, and a heated engine in a vehicle (2), such as a car, work machine or the like.

The invention is used as follows: i 3 74524

The vehicle (2) is parked as close as possible to the caravan (1) with the central heating system in operation. Before attempting to start the engine (15), the cooling and heating fluid compartments of the caravan and the engine are connected by thermally insulated hoses (14-, 15). · The connection to the heating system of the trailer, preferably a burner (10) and circulating water pump (11) With a T-connector (15) a pipe (in) 9 from which the warm liquid leaves the motor (15). The ratio of the amount of water going to the engine and the heating coils can be adjusted with a valve (13 *). The fluid (frost resistance and type similar to that of the engine) is discharged into a rotary-ve si rur.ou 11 · - · '' Λ ') 1 ä m.nö different stet tv vn tube (1Ί-),,' oka on k vt ke ttv m oooori i n. ^ 1 ^ :) preferably vprinmTvm pee ^ Pälv-p ^ p whereby the warm liquid flows directly into the water space of the cylinder block (25). If the water valves of the heating devices of the vehicle (2) are open, the warm liquid also flows through the heating system of the vehicle, which also warms the interior of the vehicle.

The residue requires the use of a speaker for the vehicle heater (17).

After circulating in the motor, the liquid is discharged, preferably before the thermostat (23) into the pipe (19) along which it returns to the caravan's central heating system. The pipes (19) are connected, for example, by means of a T-connector (20) to the return pipe of the carriage with the body heater (10).

The arrangement prevents this amount of liquid from heating the radiator (24-) SinS -> _ of the vehicle (2) before the thermostat (23) opens. This accelerates the heating of the engine (15) itself,

The invention is suitable for use, for example, in a motorhome's herteer, so that heating fluid is led from the motorhome's central heating device to the car's own engine.

The invention is excellently suitable for use in the heating of machine engines. often during the night to places where mains power is not available.

“74524 u.on some professionals in remote areas have to use a caravan even for long-term living, and at the same time need their car every day. The invention makes it possible to start the car, even if mains power or towing assistance is not available.

Claims (8)

1. A method for heating coolant for an internal combustion engine by passing liquid to the cooling system of the engine (15) preheated in a heating system outside the engine, characterized in that the preheated liquid is taken from the liquid central heating system of the caravan (1). 2. A method for heating coolant for an internal combustion engine by passing the liquid into the engine cooling system preheated in a heating system outside the engine, characterized in that in the case of a motorhome, the preheated liquid is fed into the engine from the car's own central heating system. . 3. A method according to claims 1 and 2, characterized in that the liquid which heats the engine (15) is heated by means of the caravan / camper heater (10) and pumped into the engine by means of a circulation water pump (11). Method according to claims 1 and 2, characterized in that the hot water is taken from the caravan / camper heating system via a connection piece (13) installed between the circulation water pump (11) and heating element (12), in connection with which the connecting piece is installed. control valve (13 ') for regulating the amount of fluid that enters the motor or the värmeelemen-ten. 5. A method according to claims 1 and 2, characterized in that the inlet pipe (14) for the liquid is connected to the motor (15) after the water pump (22), and the return pipe (19) is connected before the thermostat (23). Apparatus for carrying out the method according to claims 1 and 2, characterized in that it comprises a liquid central heating system in a caravan (1) or camper, liquid transport pipes (14, 19), couplings to the motor (26, 27) and to the caravan / the car's heating system, (13, 20) and a control valve (13 ').