RU197795U1 - PRE-PREPARATION DEVICE - Google Patents

Abstract

The utility model relates to the field of mechanical engineering, namely to the design of the pre-start preparation system for internal combustion engines of a vehicle, in particular a freight vehicle with a tipping cab. The pre-start preparation device comprises a pre-start liquid heater (1), a fuel supply pipe (2), a coolant and exhaust gas piping system, a circulation liquid pump (3) and a fuel pump (not shown). The piping system for supplying and discharging coolant contains a liquid electric valve (20). A silencer (28) is installed in the exhaust system. The technical result consists in expanding the functionality of the pre-launch device, which allows either to heat the engine, or to heat the cabin, or to heat the engine and heat the cabin at the same time. 1 s.p. f-ly, 4 ill.

Description

The invention relates to the field of mechanical engineering, namely, to the design of a pre-start preparation system for internal combustion engines of a vehicle, in particular a freight vehicle with a tipping cab.

A known autonomous engine pre-treatment system comprising a pre-heater with a liquid pump designed to circulate the coolant between the pre-heater and the engine through a piping system, fuel pumps designed to supply fuel from the fuel tank to the heater through the fuel pipe, as well as a pipe for the removal of combustion products from a heater to the engine oil crankcase, while the fuel tank is made independent of the engine fuel system (see RF certificate No. 119398, IPC F02N 19/00 (2010.01), published on 08.20.2012).

Known autonomous engine pre-treatment system, comprising a fuel tank, made independent of the engine fuel system, a pre-heater, which includes a heater boiler, a pump unit including a supercharger, liquid and fuel pumps, designed to circulate the coolant between the pre-heater and the engine through piping system, and for supplying fuel from the fuel tank to the pre-heater through the fuel line, a pipe for exhausting combustion products from the pre-heater to the engine's raised base, and also a battery heating device made in the form of a tube at one end connected to the engine coolant supply pipe and the other the end - with a pipeline for removing the cooled coolant from the engine to the pre-heater (see RF certificate No. 183420, IPC 19/02 (2010.01), publ. 03/27/2018).

It is known to install a preheater containing a liquid heater, an air supply pipe, a liquid supply and exhaust pipe, a gas exhaust pipe, a pump unit with an electric motor, a fan, a liquid and fuel pumps, a fuel tank, brackets in which the heater is installed under the front cross member of the car frame ( Manual for operation, device, maintenance and repair of KamAZ-5320, 5410, 55102, 55111, 53212, 53211, 53213, 54112, 43114, 43118, 6511, 53228, 44108, 43115, 65115, 6540, 53229, 4326, 53215, 54115, 43114-3902002RE, KAMAZ OJSC, 2003, pp. 71-78, Fig. 112).

Known technical solutions do not perform the role of heating the passenger compartment. To ensure this function, it is necessary to install an additional heating circuit for the cabin interior.

Closest to the claimed technical solution is a pre-start preparation device containing a pre-start liquid heater, a fuel supply pipe, a system of pipelines for supplying and discharging coolant to the heater and from the heater and exhaust gas, circulation liquid and fuel pumps, brackets, while the piping system contains molded sleeves connected to the fluid inlet and outlet pipes, the exhaust gas pipe installed on the heater through a pipe and a metal hose, and to one of the brackets designed to attach the heater to the cab floor amplifiers, a circulation fluid pump is also fixed, in addition, in the brackets fastenings are made shaped holes (see certificate of the Russian Federation No. 190732, IPC 19/04 (2010.01), publ. 11.07.2019).

The disadvantage of this technical solution is the lack of the possibility of heating the cabin as with the engine, or separately from it, i.e. with the engine off. In addition, the operation of the pre-heater causes an increased noise level, which creates discomfort to the driver and passengers.

In the presented technical solutions to ensure heating of the cabin, there is a need to start the engine or it is necessary to install additional devices for autonomous heating of the cabin.

The task to which the proposed technical solution is directed is to expand the functionality of the pre-launch device by providing the possibility of heating the cabin inside both with the engine and separately from it, i.e. with the engine off.

To solve the problem, in the pre-start preparation device containing a pre-start liquid heater, a fuel supply pipe, a system for supplying and discharging coolant and exhaust gas, a circulation liquid and fuel pumps, a system for piping for supplying and discharging coolant, a liquid electric valve is provided. In the particular case, a silencer is installed in the exhaust system.

The set of essential features, namely, that the system of pipelines for supplying and discharging coolant contains a liquid electric valve, allows you to expand the functionality of the pre-start preparation device by providing three operating modes: engine heating, cabin cabin heating, allowing for joint connection with the climate system, and engine heating in conjunction with cabin cabin heating.

In addition, the installation of a silencer in the exhaust gas exhaust system will reduce the noise level of the pre-heater operation, which in turn increases the comfort of the driver and passengers.

The claimed technical solution is illustrated by the drawings:

FIG. 1 - pre-launch device mounted on a vehicle, isometric view;

FIG. 2 - the same, bottom view;

FIG. 3 - expansion tank with tubes, front view;

FIG. 4 is a system of exhaust pipes, side view.

The pre-start preparation device includes a pre-start liquid heater 1, a fuel supply pipe 2, a system for supplying and discharging coolant and exhaust gas, a circulation liquid pump 3, and a fuel pump (not shown) located near the vehicle fuel tank in the fuel supply line of the pre-heater 1.

The system of pipelines for supplying and discharging coolant comprises molded sleeves for supplying 4 and removal of coolant 5 to and from heater 1 installed on the heater, connected respectively to pipes of exhaust 6 and supply 7 installed on the cab 8, pipes for draining 9 and 10 of coolant from engine 11, a pipe 12 for supplying fluid to the engine 11, molded sleeves 13 and 14 made of elastic material, connecting respectively the supply pipe 12 and the expansion tanks 15 and the exhaust pipes 9 and 10, molded sleeve supply 16 and the outlet 17 of the radiator of the cabin heater, tee 18, connecting the molded sleeves 17 and 19, the liquid electric valve 20 connected to the tubes 7, 10, 21 through the molded sleeves 22. The liquid supply pipe 21 to the valve 20 is connected to the tee 18 by means of the molded sleeve 23. The electric liquid valve 20 makes it possible to use a heater installation 1 in several modes, allowing either to heat engine 11, either heat the cabin 8 cabin, or heat the engine 11 and heat the cabin at the same time.

The exhaust gas piping system is made of those installed on the heater 1 through the pipe 24 and the metal hose 25 of the exhaust pipes 26 and 27 with an outlet to the rear of the cab 8. A muffler 28 is installed between the pipes 26 and 27, which reduces the noise level during operation of the heater 1.

The device pre-launch works as follows.

The pre-start system is filled with coolant when the vehicle cooling system is filled. If it is necessary to carry out thermal pre-start preparation or heating the cab 8 through the control system of the heater 1, located at the driver’s workplace, the pre-heater 1 is launched, which performs heating of the coolant by burning fuel supplied through the pipe 2 from the vehicle’s fuel tank by means of a pump located near the vehicle’s fuel tank in the fuel line. The supply and removal of coolant, as well as its movement through the channels of the engine cooling system 11, is carried out by a circulation pump 3. If necessary, the cab 8 is heated, the heated coolant is piped to the heater radiator of the cab 8, from where it enters the expansion tank 15 in front of which a tee 18 is installed The first mode of operation of the liquid electric valve 20 is turned on, and the coolant is drawn through the tee 18 and sent to the liquid heater 1. If necessary, the engine 11 is heated, the second mode of the valve 20 is turned on, and the coolant is taken from the engine 11. In the case of the need for simultaneous heating of the engine 11 and heating the cabin 8, the valve 20 is turned on in the third mode, in which the intake of coolant occurs both from the engine 11 and from the radiator of the heater of the cabin 8 through the sleeve 17. The exhaust gases during operation of the heater 1 are discharged into the atmosphere Through muffler 28 and exhaust pipes 26, 27.

The claimed technical solution allows to expand the functionality of the device pre-launch by providing the possibility of heating the cabin both with the engine and separately from it, i.e. with the engine off.

In addition, the installation of a silencer in the exhaust gas exhaust system reduces the noise level of the pre-heater operation, which in turn increases the comfort of the driver and passengers.

In addition, this device design allows you to place the heater assembly over the wing of the cabin and protect it with the left side panel, thereby increasing the reliability of the system components when mounted on a vehicle with a tipping cab by reducing external influences on the heater.

The claimed technical solution is possible for implementation on standard technological equipment.

Claims (2)

1. A pre-start preparation device comprising a pre-start liquid heater, a fuel supply pipe, a system for supplying and discharging coolant and exhaust gas, a circulation liquid and fuel pumps, characterized in that the system of piping for supplying and discharging coolant comprises a liquid electric valve. 2. The device according to claim 1, characterized in that a silencer is installed in the exhaust system.

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