CN209976670U - Thermostat for fuel system of diesel engine - Google Patents

Abstract

The utility model discloses a diesel engine fuel oil system constant temperature equipment, including electric heating system and engine coolant liquid heat exchange system, electric heating system includes PTC hot plate, silicon rubber heating heat preservation line and filter heating module, the PTC hot plate is fixed in the diesel tank bottom through the mode of bonding, silicon rubber heating heat preservation line cladding is in the outside of diesel pipeline, filter heating module includes heating cup and temperature detect switch, the heating cup cover is in the outside of filter, use the switch to be connected between one end of connecting pipeline and the diesel engine electric fan heater inlet tube interface, the other end of connecting pipeline is connected with heating copper pipe, filter heating pipe and heating plate through the mode of establishing ties, recycles connecting pipeline and gets back to warm braw return pipe interface, this diesel engine fuel oil system constant temperature equipment has strengthened the suitability of equipment, greatly improves the fighting capacity of the equipment in all regions and all time periods, and is worth of being widely popularized.

Description

Thermostat for fuel system of diesel engine

Technical Field

The utility model relates to a diesel engine technical field specifically is a diesel engine fuel oil system constant temperature equipment.

Background

The diesel oil is commonly used in regions with relatively fixed labels, the No. 0 diesel oil is commonly used in the south of the Yangtze river, the No. 0 or No. 10 diesel oil is commonly used in the regions of the south of the yellow river and the north of the Yangtze river, and the No. 35 diesel oil is commonly used in the northeast, Xinjiang and Tibet regions in winter. The heating device is very important to be additionally arranged on a diesel engine fuel system, at present, the army is mainly equipped with a diesel engine, the diesel engine has the characteristics of strong power and low failure rate, but compared with gasoline, the diesel engine is greatly influenced by the outside air temperature, so that the diesel oil is divided into 6 labels according to the condensation point: 5# diesel oil, 0# diesel oil, -10# diesel oil, -20# diesel oil, -35# diesel oil and-50 # diesel oil. The diesel oil with different labels is mainly determined according to the temperature in use. Generally, 5# diesel is suitable for the temperature above 8 ℃, 0# diesel is suitable for the temperature from 4 ℃ to 8 ℃, 10# diesel is suitable for the temperature from-5 ℃ to 4 ℃, 20# diesel is suitable for the temperature from-14 ℃ to-5 ℃, 35# diesel is suitable for the temperature from-14 ℃ to-29 ℃, and 50# diesel is suitable for the temperature from-44 ℃ to-29 ℃ or lower. Experts show that if the grade of diesel oil is not suitable for the use temperature range, a fuel system in an engine can be waxed, an oil way is blocked, and the normal work of the engine is influenced. Therefore, it is necessary to invent a thermostat for a fuel system of a diesel engine to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a diesel engine fuel oil system constant temperature equipment to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a diesel engine fuel system constant temperature equipment, includes electric heating system and engine coolant liquid heat exchange system, its characterized in that: the electric heating system comprises a PTC heating plate, a silicon rubber heating insulation wire and a filter heating module, wherein the PTC heating plate is fixed at the bottom of a diesel oil tank in a bonding mode, the PTC heating plate is a 100MM 30MM 6MM heating plate, and has the advantages of heating, high heat conversion rate, safety, energy conservation, little influence by power supply voltage and long natural service life, the silicon rubber heating insulation wire is coated on the outer side of the diesel oil pipeline, the silicon rubber heating insulation wire has the characteristics of insulation and corrosion resistance, the length of 24V40 DEG 10.5 meter is only 52 watts, the electric heating system has the characteristics of energy conservation and high efficiency, the heating wire and the diesel oil pipeline can be wrapped by using fireproof insulation asbestos cloth, the filter heating module comprises a heating cup and a temperature control switch, the heating cup is sleeved on the outer side of the filter, and consists of a ceramic thermistor heating sheet, a conductive heat dissipation metal sheet and heat-resistant fireproof insulation cotton, a power supply of 24V, starting current of 100A-120A, holding current of 10A-60A, power of 120W, a temperature control switch, when the temperature of the fuel is less than 5 ℃, the temperature switch and the control relay of the fuel heater are activated, the heating cup starts to work, when the temperature of the filter reaches about 20 ℃, the heating is stopped, the engine coolant heat exchange system comprises a connecting pipeline, a temperature control module, a heating copper pipe, a filter heating pipe and a heating plate, one end of the connecting pipeline is hermetically connected with a cooling liquid tank of the diesel engine, the connecting port of a warm air inlet pipe and a warm air return pipe of the automobile is utilized, the adhesive tape hose and the copper pipe for engine cooling liquid are connected with the filter heating cup and the fuel tank heating disc by the three-way joint, and the cooling liquid returns to the inside of the engine water tank after circulation, the other end of the connecting pipeline is respectively connected with the heating copper pipe, the filter heating pipe and the heating plate through a three-way joint.

Preferably, the silicon rubber heating insulation line sequentially comprises an insulation layer, a polyethylene insulation layer and a modified PVC insulation protective sleeve from inside to outside, and the heating wire is wrapped in the insulation layer.

Preferably, the section of the heating copper pipe adopts a round corner rectangular design, so that the contact area between the heating copper pipe and the fuel tank is increased, the heating speed of the diesel tank is increased, and the heating effect is ensured.

Preferably, the filter heating pipe is designed by adopting a copper pipe aluminum body, a round ceramic thermistor heating sheet is installed at the bottom of the filter heating pipe, the copper pipe is arranged on the peripheral wall of the heating cup in a spring type layout, and the round ceramic thermistor heating sheet is installed at the bottom of the heating cup, so that a double mode of water heating and electric heating is realized.

Preferably, the heating plate adopts the spiral design, the water inlet and the return water mouth of heating plate keep in a plane, utilize silica gel to bond in the diesel tank bottom, are convenient for intake and the being connected of wet return, put at the central point that heats the copper pipe and set up a 24 and put PTC and heat the board that generates heat, use electrical heating when the cooling liquid temperature is lower, realize the dual mode of water heating and electrical heating.

Compared with the prior art, the beneficial effects of the utility model are as follows: the thermostat of the diesel engine fuel system greatly improves the applicability of the diesel engine and ensures the normal operation of equipment provided with the diesel engine in winter or in extremely cold highland conditions; by controlling the fuel temperature, the atomization effect of the diesel oil is ensured, the probability of carbon deposition in a cylinder is reduced, the combustion efficiency of the diesel oil is improved, the failure rate is greatly reduced, and the service life of the diesel engine is prolonged; energy saving, consumption reduction and economic benefit improvement. After the device is installed, the engine can change-10 #, -20# and-35 # diesel into 0# diesel under the same condition, and the fuel cost can be saved by 6% -20%.

Drawings

Fig. 1 is a schematic diagram of the system structure of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a thermostat of a diesel engine fuel system comprises an electric heating system and an engine coolant heat exchange system, and is characterized in that: the electric heating system comprises a PTC heating plate, a silicon rubber heating insulation wire and a filter heating module, wherein the PTC heating plate is fixed at the bottom of a diesel oil tank in a riveting mode, the PTC heating plate is a 100MM 30MM 6MM heating plate, and has the advantages of heating, high heat conversion rate, safety, energy conservation, little influence by power supply voltage and long natural service life, the silicon rubber heating insulation wire is coated on the outer side of the diesel oil pipeline, the silicon rubber heating insulation wire has the characteristics of insulation and corrosion resistance, the length of 24V40 DEG 10.5 meter is only 52 watts, the electric heating system has the characteristics of energy conservation and high efficiency, the heating wire and the diesel oil pipeline can be wrapped by using fireproof insulation asbestos cloth, the filter heating module comprises a heating cup and a temperature control switch, the heating cup is sleeved on the outer side of the filter, and consists of a ceramic thermistor heating sheet, a conductive heat dissipation metal sheet and heat-resistant fireproof insulation cotton, a power supply of 24V, starting current of 100A-120A, holding current of 10A-60A, power of 120W, a temperature control switch, when the temperature of the fuel is less than 5 ℃, the temperature switch and the control relay of the fuel heater are activated, the heating cup starts to work, when the temperature of the filter reaches about 20 ℃, the heating is stopped, the engine coolant heat exchange system comprises a connecting pipeline, a temperature control module, a heating copper pipe, a filter heating pipe and a heating plate, one end of the connecting pipeline is hermetically connected with a cooling liquid tank of the diesel engine, the connecting port of a warm air inlet pipe and a warm air return pipe of the automobile is utilized, the adhesive tape hose and the copper pipe for engine cooling liquid are connected with the filter heating cup and the fuel tank heating disc by the three-way joint, and the cooling liquid returns to the inside of the engine water tank after circulation, the other end of the connecting pipeline is respectively connected with the heating copper pipe, the filter heating pipe and the heating plate through a three-way joint.

Specifically, the silicon rubber heating insulation line sequentially comprises an insulation layer, a polyethylene insulation layer and a modified PVC insulation protective sleeve from inside to outside, and the heating wire is wrapped in the insulation layer.

Specifically, the section of heating copper pipe adopts the design of fillet rectangle, and increase and diesel tank's area of contact promote the rate of heating to diesel oil, ensure the heating effect.

Specifically, the filter heating pipe adopts the design of copper pipe aluminium body, circular pottery thermistor heating plate is installed to the bottom of filter heating pipe, and the copper pipe adopts the spring overall arrangement to set up on the perisporium of heating cup, is equipped with circular pottery thermistor heating plate in the bottom of heating cup, realizes the dual mode of water heating and electrical heating.

Specifically, the heating plate adopts the spiral design, the water inlet and the return water mouth of heating plate keep in a plane, are convenient for intake and the being connected of wet return, put at the central point that adds the heating copper pipe and set up a 24 and volt PTC heating board, use electrical heating when the coolant temperature is lower, realize the dual mode of water heating and electrical heating.

The working principle is as follows: this diesel engine fuel system constant temperature equipment is provided with the temperature-sensing ware at the oil inlet of the high-pressure oil pump of engine, detects the oil feed temperature of engine, comes the control to set up the opening and closing at fuel constant temperature system electric heater unit through the temperature that detects firstly, and secondly controls opening and closing of fuel constant temperature system water heating device interrupt water valve, plays the purpose of heating homothermal.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (5)

1. The utility model provides a diesel engine fuel system constant temperature equipment, includes electric heating system and engine coolant liquid heat exchange system, its characterized in that: the electric heating system includes PTC hot plate, silicon rubber heating heat preservation line and filter heating module, the PTC hot plate is fixed in the diesel tank bottom through the mode of bonding, the cladding of silicon rubber heating heat preservation line is in the outside of diesel pipeline, the filter heating module includes heating cup and temperature detect switch, the heating cup cover is in the outside of filter, engine coolant liquid heat exchange system includes hookup pipeline, temperature detect module, heating copper pipe, filter heating pipe and heating plate, be connected with the switch between hookup pipeline's one end and the diesel engine electric fan heater inlet tube interface, the other end of hookup pipeline is connected with heating copper pipe, filter heating pipe and heating plate through the mode of establishing ties, and warm braw return pipe interface is received to reuse hookup pipeline.

2. The thermostat device for the fuel system of the diesel engine as claimed in claim 1, wherein: the silicon rubber heating and heat preservation line sequentially comprises an insulating layer, a polyethylene insulating layer and a modified PVC insulating protective sleeve from inside to outside, and the heating wires are wrapped in the insulating layer.

3. The thermostat device for the fuel system of the diesel engine as claimed in claim 1, wherein: the section of the heating copper pipe is designed to be a rounded rectangle.

4. The thermostat device for the fuel system of the diesel engine as claimed in claim 1, wherein: the filter heating pipe is designed by adopting a copper pipe aluminum body, and a round ceramic thermistor heating sheet is installed at the bottom of the filter heating pipe.

5. The thermostat device for the fuel system of the diesel engine as claimed in claim 1, wherein: the heating plate adopts a spiral design, and a water inlet and a water return port of the heating plate are kept on the same plane.

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