RU96068U1 - DEVICE FOR HEAT PREPARATION OF THE CAR - Google Patents

Abstract

 1. A device for thermal preparation of a vehicle, comprising a sealed heat-insulating casing of the crankcase of an internal combustion engine, thermal insulation of nozzles of an internal combustion engine and a cooling system, characterized in that a heat accumulator located under the bottom of the crankcase and comprising a phase-transfer heat storage is located in the heat-insulating casing of the crankcase of the internal combustion engine material placed in a sealed heat-conducting container, while the thermal insulation is equipped with an expansion th engine cooling system of the internal combustion tank and the inner side of the vehicle hood. ! 2. A device for the thermal preparation of an automobile, characterized in that a phase-transfer heat storage material is a eutectic solution of salt in water, for example, sodium acetate trihydrate with an activator additive.

Description

The utility model relates to the field of transport engineering, and in particular to devices for the thermal preparation of a vehicle during operation in conditions of garageless maintenance at freezing temperatures.

A heating system for an internal combustion engine is known from the prior art, in which a phase transition heat accumulator is used as a heat source, utilizing and storing thermal energy of the exhaust gas of the internal combustion engine and consisting of an outer casing, a layer of thermal insulation and a heat storage core, in which there is a heat storage material undergoing reversible phase transition melting-crystallization, and gas pipe heat exchanger. The latter is used both for the accumulation of heat by passing an exhaust gas flow through it, and for the transfer of heat due to the organization of forced air movement along the air line, consisting of air ducts, an air filter and a fan supplying hot air to the crankcase of the engine. In the crankcase of the engine, the air warms up its main and connecting rod bearings, as well as engine oil (see RF patent No. 2170851 for invention, IPC7 F02N 17/00, 07.20.2001).

This heating system is effective for mobile cars with a short garage storage time (4-6 hours) at ambient temperatures up to -30 ° C, while turning on the fan is carried out 2-3 hours before starting the engine.

A known system for the thermal preparation of a car during storage in freezing temperatures, containing a heater with air heaters and a fan for supplying air coolant, forcing and suctioning air ducts, contact housings sealed on the outer surfaces of the engine, open surfaces of the gearbox and the cab above the oil level baths of heated units, a device for distributing air coolant over all contact covers, coated with external torons with insulating material (see patent No. 2070657 for an invention, IPC6 F02N 17/02, 12/20/1996).

This system complicates the design of the engine compartment due to the need to install a device for distributing air coolant in all contact covers.

There is also known a system for facilitating engine starting of a vehicle in low temperature conditions, comprising an oil heater located in the engine crankcase, made in the form of a dipstick, used to heat the oil, an oil level indicator, a coolant heater made in the form of a tubular electric heater, and a control unit, auxiliary battery, electrically connected to the battery of the vehicle, while both batteries are equipped with heat-insulating covers (see nt RF №58182 for a utility model, IPC F01M 5/02, 10/10/2006).

This system does not have operational reliability due to increased fire hazard.

The technical solution closest to the intended purpose and essential features to the claimed utility model is a device for thermal preparation of a vehicle, comprising casings mounted on both sides of the engine crankcase and forming sealed cavities with its outer surface in communication with the coolant source, additional casings installed on both sides gearboxes and hermetic cavities forming with its outer surface. The covers in cross section are box-shaped, and the cavities of the engine crankcases and the gearbox covers of each side are connected by hoses in series with each other and with the cavity of the car cab, and the cavity of the cab is in communication with the upper part of the engine compartment. The gearbox housings are provided with heat-insulating material from the outside (see RF patent No. 2048304 for an invention, IPC 6 В60Н 1/00, 11/20/1995).

This device does not exclude heat loss, and, therefore, the duration of the conservation of heat generated by the internal combustion engine from the moment it stops is short.

The technical result of the claimed utility model is to increase the duration of the heat generated by a working internal combustion engine from the moment it stops at any time of the year.

The claimed technical result is achieved by the fact that in the device for thermal preparation of the car, containing a sealed heat-insulating casing of the crankcase of the internal combustion engine, thermal insulation of the nozzles of the internal combustion engine and cooling system, a heat accumulator is located in the heat-insulating casing under the bottom of the crankcase of the internal combustion engine, which is a phase-transfer heat storage material placed in an airtight heat-conducting tank, with thermal insulation provided ritelny engine cooling system of the internal combustion tank and the inner side of the vehicle hood.

In addition, a eutectic (cryohydrate) solution of salt in water, for example, sodium acetate trihydrate with an activator additive, was used as a phase-transfer heat-accumulating material.

The utility model is illustrated in the drawing, which schematically depicts the engine compartment with a device for thermal preparation of a vehicle containing an internal combustion engine 1 (ICE), a housing 2 of the crankcase, under the bottom of which there is a phase-transition heat-accumulating material 3, placed in a sealed heat-conducting container (not shown). Sodium acetate trihydrate, the most suitable for today under temperature conditions, with an additive - activator (initiator of crystallization of a cooled solution of sodium acetate trihydrate) was used as a phase-transition heat-accumulating material. The housing 2 of the crankcase and the tank with heat-accumulating material 3 are located inside the heat-insulating casing 4. For efficient and long-term operation of the heat storage system and to avoid heat loss, heat-insulating materials are used for ICE pipes 5, pipes for cooling system 7 and expansion tank 8. On the inside of the hood Car installed heat shield 9.

A device for thermal preparation of the car works as follows.

From the internal combustion engine operating at low temperatures, heat is transferred through the housing 2 of the crankcase to the phase-transition heat-accumulating material 3, which is heated in the solid phase to a melting point of 58 ° C, melts and then heated in the liquid phase to a temperature of 90-100 ° C. At this temperature, thermal equilibrium occurs between the phase-transition heat-accumulating material 3 and the housing 2 of the ICE crankcase. Heat storage is carried out due to the presence in the system of thermal energy storage of a heat-insulating casing 4 of the ICE crankcase.

As the internal combustion engine 1 is cooled after it is turned off, the thermal energy storage system through the housing 2 of the crankcase gradually transfers the stored heat from the liquid phase-transition heat-accumulating material 3 to the oil contained in it to the crystallization temperature of the latter not lower than 20 ° C. Then, the heat storage material 3 undergoes a reversible phase transition for a long time (at least 5 hours) from a liquid state to a solid crystalline state with the release of latent heat of crystallization, which continues to heat the oil in the crankcase through the crankcase 2.

Test tests of the device for thermal preparation of the car showed a slowdown in cooling the engine off from 6 to 12 hours depending on the ambient temperature and the amount of heat-accumulating material.

The claimed utility model has several advantages compared to known devices, the most prominent of which are:

- increase the ICE resource by reducing the so-called “cold starts”;

- fuel economy;

- ease of installation;

- universality for all types of cars;

- does not require changes in the design of the engine cooling system;

- does not require maintenance.

Claims (2)

1. A device for thermal preparation of a vehicle, comprising a sealed heat-insulating casing of the crankcase of an internal combustion engine, thermal insulation of nozzles of an internal combustion engine and a cooling system, characterized in that a heat accumulator located under the bottom of the crankcase and comprising a phase-transfer heat storage is located in the heat-insulating casing of the crankcase of the internal combustion engine material placed in a sealed heat-conducting container, while the thermal insulation is equipped with an expansion th engine cooling system of the internal combustion tank and the inner side of the vehicle hood. 2. A device for the thermal preparation of an automobile, characterized in that a phase-transfer heat storage material is a eutectic solution of salt in water, for example, sodium acetate trihydrate with an activator additive.