CN110159473B - Engine preheating system - Google Patents
Engine preheating system Download PDFInfo
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- CN110159473B CN110159473B CN201910434609.2A CN201910434609A CN110159473B CN 110159473 B CN110159473 B CN 110159473B CN 201910434609 A CN201910434609 A CN 201910434609A CN 110159473 B CN110159473 B CN 110159473B
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- Prior art keywords
- water
- engine
- preheating
- heat exchanger
- cylinder sleeve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
- F01M5/001—Heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
- F01M5/02—Conditioning lubricant for aiding engine starting, e.g. heating
- F01M5/021—Conditioning lubricant for aiding engine starting, e.g. heating by heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/12—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
- F02M31/125—Fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/16—Other apparatus for heating fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
- F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
- F02N19/10—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of engine coolants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
- F01M2005/008—Lubrication means facilitating engine starting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention relates to the technical field of engines, in particular to an engine preheating system, wherein an engine is provided with a cylinder sleeve preheating water inlet and a cylinder sleeve preheating water outlet, an electric control water pump, the cylinder sleeve preheating water inlet and the cylinder sleeve preheating water outlet are sequentially communicated to form a circulating water path, a communicating pipeline between the electric control water pump and the cylinder sleeve preheating water inlet is provided with a heating unit, the heating unit comprises a water heat exchanger, the water heat exchanger is communicated with an external hot water source, the external hot water source can adopt free or low-charge heat sources, such as municipal hot water, boiler heating water and the like, the temperature maintenance of the engine in a low-temperature environment can be met, and the use cost can be effectively reduced.
Description
Technical Field
The invention relates to the technical field of engines, in particular to an engine preheating system.
Background
The engine preheating system uses an electric control water pump as a power source, and intermittently works according to set temperature requirements under the condition of low-temperature environment temperature, and is used for heating and maintaining the temperature of a machine body of the engine, the temperature of engine oil of an oil bottom shell and the temperature of fuel oil of a fuel tank. In the prior art, the heating mode of the preheating system is an electric heating unit, and the heating mode adopting the electric heating unit can meet the low-temperature starting requirement of a high-power diesel engine, but has the problems of large power consumption and high use cost.
Disclosure of Invention
The invention aims to provide an engine preheating system, which aims to solve the technical problems of large power consumption and high use cost of the engine preheating system in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an engine preheats system, the engine has cylinder liner preheating water entry and cylinder liner preheating water export, automatically controlled water pump cylinder liner preheating water entry and cylinder liner preheating water export communicates in proper order and forms the circulation water route, automatically controlled water pump with communicating pipe between the cylinder liner preheating water entry is provided with the heating unit on the road, the heating unit includes water heat exchanger, water heat exchanger is linked together with outside hot water source.
As a preferable technical scheme of the preheating system of the engine, a first temperature control switch is arranged on a circuit connecting the electric control water pump and a power supply, a first temperature sensor is arranged at a cylinder sleeve preheating water inlet or a cylinder sleeve preheating water outlet, and the first temperature sensor is electrically connected with the first temperature control switch.
As a preferable technical scheme of the preheating system of the engine, the heating unit further comprises an electric heat exchanger, the electric heat exchanger and the water heat exchanger are connected in series on a communication pipeline between the electric control water pump and the cylinder sleeve preheating water inlet, and the electric heat exchanger is connected with a power supply.
As a preferable technical scheme of the preheating system of the engine, a second temperature control switch is arranged on a circuit connecting the electric heat exchanger and a power supply, a second temperature sensor is arranged on a pipeline connecting the water heat exchanger and the external hot water source, and the second temperature sensor is electrically connected with the second temperature control switch.
As a preferable technical scheme of the engine preheating system, a second branch connected in parallel with a first branch where the cylinder sleeve preheating water inlet and the cylinder sleeve preheating water outlet are located is arranged between the outlet of the heating unit and the electric control water pump, and an oil pan heating pipe of the engine is arranged on the second branch.
As a preferable technical solution of the engine preheating system, a first check valve is provided on the second branch before the oil pan heating pipe.
As a preferable technical solution of the engine preheating system, the first open-close valve is an electrically controlled open-close valve.
As a preferable technical scheme of the preheating system of the engine, a third branch which is connected with the first branch where the cylinder sleeve preheating water inlet and the cylinder sleeve preheating water outlet are located in parallel is arranged between the outlet of the heating unit and the electric control water pump, and the fuel tank is arranged on the third branch.
As a preferable technical solution of the engine preheating system, a second check valve is provided on the third branch before the fuel tank.
As a preferable technical scheme of the engine preheating system, the second check valve is an electric control check valve.
The invention has the beneficial effects that:
1) the engine preheating system provided by the invention has the advantages that the engine is provided with the cylinder sleeve preheating water inlet and the cylinder sleeve preheating water outlet, the electric control water pump, the cylinder sleeve preheating water inlet and the cylinder sleeve preheating water outlet are sequentially communicated to form a circulating water path, the communicating pipeline between the electric control water pump and the cylinder sleeve preheating water inlet is provided with the heating unit, the heating unit comprises the water heat exchanger, the water heat exchanger is communicated with an external hot water source, the external hot water source can adopt free or low-charge heat sources, such as municipal hot water, boiler heating water and the like, the temperature maintenance of the engine in a low-temperature environment can be met, and the use cost can.
2) The heating unit also comprises an electric heat exchanger, and when an external hot water source is stable and controllable, the low-temperature starting performance of the engine can be met only by preheating the cylinder sleeve of the engine by using the water heat exchanger; when the heat provided by the external hot water source cannot meet the low-temperature starting performance of the engine, the electric heat exchanger can be started, and the electric heat exchanger and the water heat exchanger provide preheated hot water for the cylinder sleeve of the engine together, so that the low-temperature starting performance of the engine can be ensured, and the use frequency of the electric heat exchanger can be reduced and the use cost can be saved by arranging the water heat exchanger and the electric heat exchanger in series.
3) Through connecting engine cylinder liner, oil pan heating pipe and fuel tank in parallel the setting for not only can realize the engine heating and heat preservation under low temperature environment, improve engine low temperature adaptability, reduced the requirement of low temperature environment to lubricating oil brand and fuel brand moreover, improve fuel economy, further reduce use cost.
4) Through the arrangement of the water heat exchanger and the electric heat exchanger which are connected in series and the arrangement of the engine cylinder sleeve heating, the oil pan heating pipe heating and the fuel tank heating which are connected in parallel, the use method can be freely and selectively combined, the use is more flexible, and different use requirements are met.
Drawings
FIG. 1 is a schematic diagram of a preheating system provided by the present invention.
In the figure:
11-an engine; 111-cylinder liner preheated water inlet; 112-cylinder liner preheating water outlet; 113-oil pan heating tube; 12-a fuel tank;
21-an expansion water tank; 22-an electrically controlled water pump;
31-a water heat exchanger; 32-electric heat exchanger;
40-a power supply;
51-a first temperature control switch; 52-a first temperature sensor;
61-a second temperature control switch; 62-a second temperature sensor;
71-a first on-off valve; 72-second check valve.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
As shown in fig. 1, the embodiment provides an engine preheating system, an engine 11 has a cylinder liner preheating water inlet 111 and a cylinder liner preheating water outlet 112, an electric control water pump 22, the cylinder liner preheating water inlet 111 and the cylinder liner preheating water outlet 112 are sequentially communicated to form a circulation water path, a communication path between the electric control water pump 22 and the cylinder liner preheating water inlet 111 is provided with a heating unit, the heating unit includes a water heat exchanger 31, the water heat exchanger 31 is communicated with an external hot water source, the external hot water source can adopt a free or low-charge heat source, such as municipal hot water, boiler heating water, and the like, which can not only meet the temperature maintenance of the engine 11 in a low-temperature environment, but also effectively reduce the.
Furthermore, a first temperature control switch 51 is arranged on a line connecting the electric control water pump 22 and the power supply 40, a first temperature sensor 52 is arranged at the cylinder liner preheated water inlet 111 or the cylinder liner preheated water outlet 112, and the first temperature sensor 52 is electrically connected with the first temperature control switch 51. The first temperature sensor 52 monitors the water temperature in the cylinder liner in real time, when the water temperature in the cylinder liner is lower than a first set temperature, the first temperature control switch 51 is closed, the electric control water pump 22 works, and the preheating system preheats; when the water temperature in the cylinder liner is higher than or equal to the first set temperature, the first temperature control switch 51 is switched off, and the preheating system stops working. Through the arrangement of the first temperature control switch 51 and the first temperature sensor 52, the control of the preheating system is more intelligent, and manual operation is reduced.
Further, the heating unit further comprises an electric heat exchanger 32, the electric heat exchanger 32 and the water heat exchanger 31 are connected in series on a communication pipeline between the electric control water pump 22 and the cylinder liner preheating water inlet 111, and the electric heat exchanger 32 is connected with the power supply 40. When the external hot water source is stable and controllable, the low-temperature starting performance of the engine 11 can be met only by preheating the cylinder sleeve of the engine 11 by using the water heat exchanger 31; when the heat provided by the external hot water source cannot meet the low-temperature starting performance of the engine 11, the electric heat exchanger 32 can be started, and the electric heat exchanger 32 and the water heat exchanger 31 together provide preheated hot water for the cylinder sleeve of the engine 11, so that the low-temperature starting performance of the engine 11 can be ensured, and the use frequency of the electric heat exchanger 32 can be reduced and the use cost can be saved by arranging the water heat exchanger 31 and the electric heat exchanger 32 in series.
Furthermore, a second temperature control switch 61 is arranged on a line connecting the electric heater and the power source 40, a second temperature sensor 62 is arranged on a pipeline connecting the water heat exchanger 31 and an external hot water source, and the second temperature sensor 62 is electrically connected with the second temperature control switch 61. The second temperature sensor 62 can monitor the temperature of the external hot water source in real time, when the temperature of the external hot water source is higher than or equal to a second set temperature, the second temperature control switch 61 is switched off, and the preheating system independently adopts the water heat exchanger 31 to provide heat; when the temperature of the external hot water source is lower than a second set temperature, the second temperature control switch 61 is closed, and the preheating system adopts a mode that the water heater and the electric heater are connected in series to jointly provide heat. Through the setting of second temperature detect switch 61 and second temperature sensor 62 for preheating system's control is more intelligent, reduces manual operation.
Further, a second branch connected in parallel with the first branch where the cylinder liner preheated water inlet and the cylinder liner preheated water outlet are located is arranged between the outlet of the heating unit and the electric control water pump 22, the oil pan heating pipe 113 of the engine 11 is arranged on the second branch, and the heating unit can provide hot water for the cylinder liner and also can provide hot water for the oil pan heating pipe 113 so as to heat lubricating oil in an oil pan. Furthermore, a first check valve 71 is disposed on the second branch before the preheated water inlet of the oil pan heating pipe 113, and the first check valve 71 is used to control the activation or deactivation of the heating function of the oil pan heating pipe 113.
Further, a third branch which is connected with a first branch where the cylinder sleeve preheating water inlet and the cylinder sleeve preheating water outlet are located and a second branch where the oil pan heating pipe 113 is located in parallel is arranged between the outlet of the heating unit and the electric control water pump 22, the heating pipe of the fuel tank 12 is arranged on the third branch, and the heating unit can provide hot water for the cylinder sleeve and the oil pan heating pipe 113 and can also provide hot water for the fuel tank 12 to heat fuel oil in the fuel tank 12. Further, a second check valve 72 is disposed on the third branch before the fuel preheating water inlet, and the second check valve 72 is used for controlling the activation or deactivation of the heating function of the fuel tank 12.
The first and second check valves 71 and 72 may be mechanical check valves or electrically controlled check valves. If a mechanical on-off valve is selected, the on-off operation can be performed by maintenance personnel according to the requirement according to the environmental condition. If the electronic control open/close valve is selected, the first open/close valve 71 and the second open/close valve 72 can be controlled according to the water temperature of the external hot water source monitored by the second temperature sensor 62. Specifically, the opening temperature of the first check valve 71 and the opening temperature of the second check valve 72 may be set to the same value, for example, both set to t1, and then when the temperature of the external hot water source is equal to or higher than t1, the first check valve 71 and the second check valve 72 are opened; when the temperature of the external hot water source is lower than t1, the first and second check valves 71 and 72 are closed. Alternatively, the opening temperature of the first check valve 71 and the opening temperature of the second check valve 72 may be set to different values, for example, the opening temperature of the first check valve 71 is set to t2, and the opening temperature of the second check valve 72 is set to t3, so that when the temperature of the external hot water source is higher than or equal to t2, the first check valve 71 is opened, and when the temperature of the external hot water source is lower than t2, the first check valve 71 is closed; also, when the temperature of the external hot water source is higher than or equal to t3, the second check valve 72 is opened, and when the temperature of the external hot water source is lower than t3, the second check valve 72 is closed.
In addition, an expansion water tank 21 is communicated with the circulating water path, and the expansion water tank 21 is used for supplementing water and pressurizing the circulating water path.
The preheating system that this embodiment provided through with engine 11 cylinder liner, oil pan heating pipe 113 and fuel tank 12 parallel arrangement for not only can realize that engine 11 heats and keeps warm under low temperature environment, improve engine 11 low temperature adaptability, reduced the requirement of low temperature environment to lubricating oil brand and fuel brand moreover, improved fuel economy, further reduce use cost. In addition, through the arrangement of the water heat exchanger 31 and the electric heat exchanger 32 which are connected in series and the arrangement of the cylinder sleeve heating of the engine 11, the oil pan heating pipe 113 heating and the fuel tank 12 heating which are connected in parallel, the use method can be freely and selectively combined, the use is more flexible, and different use requirements are met.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. The preheating system of the engine is characterized in that the engine (11) is provided with a cylinder sleeve preheating water inlet (111) and a cylinder sleeve preheating water outlet (112), an electric control water pump (22), the cylinder sleeve preheating water inlet (111) and the cylinder sleeve preheating water outlet (112) are sequentially communicated to form a circulating water path, a heating unit is arranged on a communication pipeline between the electric control water pump (22) and the cylinder sleeve preheating water inlet (111), the heating unit comprises a water heat exchanger (31), and the water heat exchanger (31) is communicated with an external hot water source; the heating unit further comprises an electric heat exchanger (32), the electric heat exchanger (32) and the water heat exchanger (31) are connected in series on a communication pipeline between the electric control water pump (22) and the cylinder sleeve preheating water inlet (111), and the electric heat exchanger (32) is connected with a power supply (40).
2. The engine preheating system according to claim 1, wherein a first temperature control switch (51) is arranged on a line connecting the electric control water pump (22) and a power supply (40), a first temperature sensor (52) is arranged at the cylinder liner preheating water inlet (111) or the cylinder liner preheating water outlet (112), and the first temperature sensor (52) is electrically connected with the first temperature control switch (51).
3. The engine preheating system according to claim 1, wherein a second temperature control switch (61) is arranged on a line connecting the electric heat exchanger (32) and the power supply (40), a second temperature sensor (62) is arranged on a line connecting the water heat exchanger (31) and the external hot water source, and the second temperature sensor (62) is electrically connected with the second temperature control switch (61).
4. The engine preheating system according to claim 1, characterized in that a second branch, which is connected in parallel with the first branch in which the cylinder liner preheating water inlet and the cylinder liner preheating water outlet are located, is provided between the outlet of the heating unit and the electronically controlled water pump (22), and an oil pan heating pipe (113) of the engine (11) is provided on the second branch.
5. Engine preheating system according to claim 4, characterized in that the second branch is provided with a first check valve (71) before the sump heating pipe (113).
6. Engine preheating system according to claim 5, characterized in that the first check valve (71) is an electrically controlled check valve.
7. The engine preheating system according to claim 1, characterized in that a third branch is provided between the outlet of the heating unit and the electrically controlled water pump (22) in parallel with the first branch in which the cylinder liner preheating water inlet and the cylinder liner preheating water outlet are located, on which third branch a fuel tank (12) is provided.
8. Engine preheating system according to claim 7, characterized in that the third branch is provided with a second check valve (72) before the fuel tank (12).
9. The engine preheating system according to claim 8, characterized in that the second check valve (72) is an electrically controlled check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910434609.2A CN110159473B (en) | 2019-05-23 | 2019-05-23 | Engine preheating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910434609.2A CN110159473B (en) | 2019-05-23 | 2019-05-23 | Engine preheating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110159473A CN110159473A (en) | 2019-08-23 |
| CN110159473B true CN110159473B (en) | 2021-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910434609.2A Active CN110159473B (en) | 2019-05-23 | 2019-05-23 | Engine preheating system |
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| CN (1) | CN110159473B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6013980A (en) * | 1983-07-06 | 1985-01-24 | Mitsubishi Heavy Ind Ltd | Warm-up device for diesel engine |
| US4682649A (en) * | 1986-06-02 | 1987-07-28 | Greer J Rex | Auxiliary air conditioning, heating and engine warming system for trucks |
| CN201827002U (en) * | 2010-07-19 | 2011-05-11 | 北京北宇机械设备有限公司 | Novel thermoelectric preheating device for diesel locomotive |
| CN103742331B (en) * | 2014-01-06 | 2015-10-07 | 莱芜钢铁集团有限公司 | A kind of internal combustion locomotive steam heat-exchanging warming-up device |
| CN205445836U (en) * | 2015-12-29 | 2016-08-10 | 航天重型工程装备有限公司 | Mining car heating system and mining car |
| CN106321322A (en) * | 2016-09-14 | 2017-01-11 | 北京理工大学 | Integrated auxiliary machine power station cold region preheating system of engineering vehicle |
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2019
- 2019-05-23 CN CN201910434609.2A patent/CN110159473B/en active Active
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