RU193278U1 - PRE-HEATING SYSTEM FOR INTERNAL COMBUSTION ENGINE - Google Patents

Abstract

The invention relates to the field of facilitating the starting of an internal combustion engine (ICE). The technical result is to ensure and maintain the temperature of the engine at low temperatures. The essence of the utility model is that the pre-heating system of the internal combustion engine contains a pre-heater (1), a heat exchanger (2), an oil casing (3) of the oil sump (4), an air blower (5), a distribution pipe (6). The pre-heater (1) and the engine cooling system are interconnected by pipelines (7), forming a closed loop for the circulation of coolant. The distribution pipe (6), oil sump (4), supercharger (5) and heat exchanger (2) are interconnected by pipelines (8) that form the air circulation circuit of the crankcase of the engine. The heater (1), the heat exchanger (2), the casing (3) of the oil sump (4) and the pipe (9) for exhaust gas are connected by pipelines (10) that form the exhaust line of the heater. The distribution pipe (6) is installed in the oil sump housing (4). Supercharger (5) of air is made in the form of a fan. The pre-heater (1) is connected to the heat exchanger (2) by means of a pipe and a pipe (10). 1 ill.

Description

The utility model relates to engine building, and in particular, to systems designed to create and maintain the temperature conditions of internal combustion engines during operation in the cold period of time.

A known system for preheating an internal combustion engine, comprising a heater with inlet and outlet pipelines equipped with water pumps, to which a block head with a cylinder block jacket, a radiator with a thermostat and an oil tank coil are connected in parallel, the system is equipped with an additional pipe, which is connected to the head on one side block, and on the other hand, to the exhaust manifold through a three-way valve (Su patent No. 956833, IPC F02N 17/02, publ. September 7, 1982).

A preheating system is also known, comprising an air heater with a fan, a casing for supplying coolant to the crankcase and its pallet and a pipe for supplying coolant to the engine cylinders, the heater is equipped with a mode switch for heating and ventilation, and in the pipe for supplying coolant to the engine cylinders made a ventilation window with an adjustable rotary damper installed in it (Su patent No. 696174, IPC F02D 1/00, publ. 23.10.1982).

The closest device of the same purpose to the claimed utility model in terms of essential features and taken as a prototype is a pre-launch engine preparation system containing 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 ensure circulation of the coolant between the pre-heater and the engine through the systems pipelines, and for supplying fuel from the fuel tank to the preheater through the fuel line, as well as the pipeline for removing combustion products from the preheater to the engine false tray, further comprises a battery heating device made in the form of a tube at one end connected to the engine coolant supply pipe, and the other end - with a pipeline for removing the cooled coolant from the engine to the pre-heater (patent RU No. 183420, IPC F02N 19/02, publ. 03/27/2018).

Known solutions in most cases have a long process of preparing the engine for starting, because the heating of the parts of the crank mechanism (KShM), which create significant resistance to the starter at extremely low temperatures, occurs due to the distribution of heat from the warmed cylinder block and engine oil of the engine.

The task to which the claimed technical solution is directed is to ensure and maintain the temperature regime of the engine at low temperatures. By heating the parts of the crankshaft, reducing the viscosity of the engine oil in the joints of the crankshaft, an increase in the speed of the crankshaft, facilitating the starting of the engine, is achieved.

This object is achieved in that the pre-heating system of the internal combustion engine, comprising a pre-heater connected to the heat exchanger by means of a pipe, an oil casing, an air blower, interconnected by pipelines forming a coolant circuit and an air circuit, also further comprises heat exchanger, air blower and distribution pipe installed in the oil sump housing; It heats the coolant circuit and the air circuit of the crankcase cavity, which is closed.

The set of distinctive features, namely, that the pre-heating system of the internal combustion engine further comprises a heat exchanger, an air blower and a distribution pipe installed in the oil casing, the pre-heater provides heating of the coolant circulation circuit and the crankcase air circulation circuit, which is closed, will reduce the viscosity of engine oil in the KShM mates, increase the crankshaft rotation speed, engine start.

The inventive utility model is illustrated in a schematic illustration, which depicts a system of prestarting heating of an internal combustion engine.

The pre-heating system of the internal combustion engine contains a pre-heater 1, a heat exchanger 2, a casing 3 of the oil sump 4, a supercharger 5 of air, a distribution pipe 6.

The pre-heater 1 and the engine cooling system are interconnected by pipelines 7, forming a closed loop for the circulation of coolant.

The distribution pipe 6, the oil sump 4, the supercharger 5 and the heat exchanger 2 are interconnected by pipelines 8 forming the air circulation circuit of the crankcase of the engine.

The heater 1, the heat exchanger 2, the casing 3 of the oil sump 4 and the pipe 9 for exhaust gas, are interconnected by pipelines 10, forming a line of exhaust gas exhaust heater.

The distribution pipe 6 is installed in the housing of the oil sump 4.

Supercharger 5 air is made in the form of a fan.

The pre-heater 1 is connected to the heat exchanger 2 by means of a pipe and a pipe 10.

The air circulation circuit of the crankcase cavity is closed.

As a heat source for heating the coolant using pre-heater 1.

As a heat source for the air circuit of the crankcase cavity and the heating of the oil sump 4, use the exhaust gases of the pre-heater 1.

The preheating system of an internal combustion engine operates as follows.

When you turn on the system, the pre-heater 1 carries out heating of the coolant in the engine cooling system 11, which provides heating of the block, sleeves and cylinder heads. In this case, the air blower 5 circulates the air of the crankcase of the engine through the heat exchanger 2. In it, the air is heated from the hot exhaust gases of the heater and enters the distribution pipe 6, which has guide nozzles 12 for directed blowing of the connecting rods and main bearings of the crankshaft. The exhaust gases of the heater after the heat exchanger 2 enter the casing 3 of the oil sump 4 for heating the oil sump 4 with engine oil.

The claimed technical solution allows to reduce the time of thermal preparation and to facilitate the start-up of the internal combustion engine at low temperatures, to use more viscous grades of motor oils in winter, and can also be used as part of existing systems for ensuring engine start-up.

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

Claims (1)

A pre-heater system for an internal combustion engine, comprising a pre-heater connected to a heat exchanger through a pipe, an oil sump housing, an air blower, interconnected by pipelines forming a coolant circuit and an air circuit, characterized in that it further comprises a heat exchanger, an air blower and a distribution pipe installed in the oil sump housing, a pre-heater preheats the circuit yatsii coolant circulation circuit, and the crankcase air cavity which is adapted to be closed.

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