CN111878215A - Cooling structure of hybrid power system - Google Patents

Cooling structure of hybrid power system Download PDF

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Publication number
CN111878215A
CN111878215A CN202010905342.3A CN202010905342A CN111878215A CN 111878215 A CN111878215 A CN 111878215A CN 202010905342 A CN202010905342 A CN 202010905342A CN 111878215 A CN111878215 A CN 111878215A
Authority
CN
China
Prior art keywords
silencer
engine
air
cooling
cooling structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010905342.3A
Other languages
Chinese (zh)
Inventor
岳峰飞
朱敬锋
李树花
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Xuanyun Technology Co ltd
Original Assignee
Tianjin Xuanyun Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tianjin Xuanyun Technology Co ltd filed Critical Tianjin Xuanyun Technology Co ltd
Priority to CN202010905342.3A priority Critical patent/CN111878215A/en
Publication of CN111878215A publication Critical patent/CN111878215A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/06—Guiding or ducting air to, or from, ducted fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/007—Apparatus used as intake or exhaust silencer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/05—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of air, e.g. by mixing exhaust with air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/12—Filtering, cooling, or silencing cooling-air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2050/00—Applications
    • F01P2050/24—Hybrid vehicles

Abstract

The invention provides a cooling structure of a hybrid power system, which comprises a guide cover wrapping a silencer, wherein the guide cover is hollow inside, and the inside of an air outlet channel of the guide cover is upwards protruded to form a silencer mounting space for mounting the silencer. The silencer is arranged in the flow guide cover, and the cooling air of the cooling suction fan respectively flows through the cylinder body, the crankcase and the silencer to form negative pressure respectively, so that the waste gas in the silencer can be sucked out, the exhaust back pressure of the two-stroke air-cooled engine is reduced, and the power of the two-stroke air-cooled engine is improved; the exhaust gas of the silencer is mixed with the cooling air respectively flowing through the cylinder body, the crankcase and the silencer at the rear end of the air guide sleeve, and the temperature of the exhaust gas flowing out of the silencer from the silencer is greatly reduced, so that the infrared stealth effect of the hybrid power system is greatly improved; the silencer is completely covered by the guide cover, and the guide cover can absorb noise generated by partial exhaust, so that the noise reduction effect is achieved.

Description

Cooling structure of hybrid power system
Technical Field
The invention relates to the technical field of extended range hybrid power systems, in particular to a cooling structure of a hybrid power system.
Background
In a hybrid power system, a magneto needs to be fixed for extended-range power generation, a cooling fan needs to be fixed for cooling the hybrid power system, and a diversion cover needs to be butted for diversion of cooling air.
The muffler of the cooling structure in the prior art is arranged outside the air guide sleeve, and the outlet of the muffler is vertically upward and is close to an air filter of an engine; during the operation process of the engine, the exhaust gas exhausted from the silencer of the engine is positioned on the same side with the air inlet end of the engine, and the silencer and the exhausted exhaust gas can cause the temperature of the inlet air to increase, so that the air inlet amount is reduced; and the exhaust gas discharged from the muffler is sucked by an air cleaner of the engine, so that the intake air amount is further reduced, thereby affecting the power and fuel consumption of the engine.
Disclosure of Invention
In view of the above, the present invention provides a cooling structure of a hybrid power system to solve the problems in the prior art.
The invention provides a cooling structure of a hybrid power system, which comprises a guide cover wrapping a silencer, wherein the guide cover is hollow inside, and the inside of an air outlet channel of the guide cover is upwards protruded to form a silencer mounting space for mounting the silencer.
Preferably, one end of the air guide sleeve is opened and is an air inlet, and a cooling suction fan is arranged at the air inlet.
Preferably, one end of the air guide sleeve opposite to the air inlet is provided with a magneto mounting opening, and two sides of the magneto mounting opening are provided with air outlet channels for guiding air outwards.
Preferably, the muffler is directly attached to the cylinder block of the engine main body portion with the exhaust port of the muffler facing rearward, the exhaust direction being perpendicular to the intake direction.
Preferably, the engine is wrapped inside the air guide sleeve, a heat insulation plate is arranged between a cylinder body of the engine and the silencer, and the cylinder body of the engine and the silencer are isolated from each other.
Preferably, the cooling suction fan is arranged at the input end of the engine, and the magneto is arranged opposite to the cooling suction fan and arranged at the output end of the engine.
Preferably, the rotor of the magneto forms a fan blade to form a fan.
Preferably, a temperature sensor is arranged on a cylinder of the engine, and the temperature sensor is arranged between an engine spark plug and the cylinder block and is used for measuring the working temperature of the engine in real time.
Preferably, the cooling structure further comprises an ECU module, and the ECU module is respectively connected with the temperature sensor and the cooling suction fan.
The invention has the advantages and positive effects that: (1) the silencer is arranged in the air outlet channel in the air guide sleeve, and the cooling suction fan provides large-flow cooling air for the cylinder body, the crankcase and the silencer, so that the heat dissipation problem of the cylinder body, the crankcase and the silencer is solved; (2) the cooling air of the cooling suction fan respectively flows through the cylinder body, the crankcase and the silencer to form negative pressure, waste gas in the silencer can be sucked out, exhaust back pressure of the two-stroke air-cooled engine is reduced, and power of the two-stroke air-cooled engine is improved; (3) the exhaust gas of the silencer is mixed with the cooling air respectively flowing through the cylinder body, the crankcase and the silencer at the rear end of the air guide sleeve, and the temperature of the exhaust gas flowing out of the silencer from the silencer is greatly reduced, so that the infrared stealth effect of the hybrid power system is greatly improved; (4) the silencer is completely covered by the guide cover, and the guide cover can absorb noise generated by partial exhaust so as to play a role in reducing noise; (5) the supporting part of the rotor end of the magneto is modified into a fan blade shape, so that an exhaust fan is formed, when the magneto works, the stator coil can be cooled by air without redundant structures, the energy conversion efficiency of the magneto is improved, and the weight of the magneto is reduced; (6) the temperature sensor on the cylinder body transmits a temperature signal to the ECU, and the ECU judges whether the rotating speed or the power of the fan is increased in real time according to logic so as to adjust the cooling air volume, ensure that the cylinder body works at the optimal temperature, realize the highest thermal efficiency of the engine and improve the fuel economy; (7) the silencer adopts an impedance composite structure, and simultaneously reduces high-frequency noise and low-intermediate-frequency noise; (8) the wind direction of the cooling suction fan is consistent with the wind direction generated by the work of the magneto, so that the condition that the cooling air flow is arranged in opposite directions to cause the collision of the cooling air flow and the consumed fan power is avoided; (9) the silencer and the air inlet of the engine are separated by the flow guide cover, the temperature of the air inlet is greatly reduced, and the exhaust gas outlet direction of the silencer is perpendicular to the normal direction of the air inlet direction of the engine, so that the exhaust gas is not mixed with the risk of air inlet, the power of the engine is improved, the oil consumption is reduced, and the power and the fuel economy of the whole system are improved.
Drawings
FIG. 1 is a schematic top view of a cooling configuration of the hybrid powertrain of the present invention;
FIG. 2 is a front view schematic illustration of a cooling configuration of the hybrid powertrain of the present invention;
FIG. 3 is a schematic perspective view of a cooling configuration of the hybrid powertrain of the present invention;
FIG. 4 is a left side mechanical schematic of the cooling configuration of the hybrid powertrain of the present invention;
FIG. 5 is a cross-sectional view of FIG. 4 taken along direction BB;
FIG. 6 is a schematic perspective view of a pod of the present invention in a first orientation;
fig. 7 is a perspective view of the pod of the present invention in a second orientation.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description and accompanying drawings that illustrate the invention.
As shown in fig. 1 to 3, an aspect of the present invention provides a cooling structure of a hybrid system, the cooling structure including a nacelle 10 surrounding a muffler, the nacelle 10 being hollow inside and having an air outlet channel 103 protruding upward to form a muffler mounting space for mounting the muffler 50.
As shown in fig. 6 and 7, the air guide sleeve 10 of the present invention is hollow inside and is used for wrapping the engine 20, one end of the air guide sleeve 10 is open and is an air inlet 101, and a cooling suction fan 30 is installed at the air inlet 101; one end of the air guide sleeve 10 opposite to the air inlet 101 is provided with a magneto installing opening 102, and two sides of the magneto installing opening 102 are provided with air outlet channels 103 for guiding air outwards; the inside of the air outlet channel 103 protrudes upward to form a muffler mounting space for mounting the muffler 50.
In the present invention, as shown in fig. 1 to 5, the engine 20 is disposed inside the air guide sleeve 10, the input end of the engine 20 is disposed at one end of an air inlet 101 of the air guide sleeve 10, the cooling suction fan 30 is installed at the air inlet 101, the output end of the engine 20 is connected to the magneto 40 at a magneto installation opening 102 of the air guide sleeve 10, and during the operation process of the engine, the rotor of the magneto 40 rotates; two air outlet channels 103 which guide the flow outwards are arranged at two sides of the magneto installing opening 102, and the silencer 50 is arranged in the air outlet channels 103; the cooling suction fan 30 sucks low-temperature cooling air into the dome 10 and cools the cylinder block and the crankcase of the engine 20 and the muffler 50, and the cooling air takes away heat of the cylinder block and the crankcase and the muffler 50 and is then discharged from the air outlet passages 103 obliquely formed at the rear ends of both sides of the engine 20, so as to ensure that cooling air heated by the cylinder block and the crankcase does not enter the magneto 40.
Further, the muffler 50 is directly attached to the cylinder block of the main body portion of the engine 20 with the exhaust port of the muffler 50 facing rearward and the exhaust direction being perpendicular to the intake direction, so that the force of the engine 20 is prevented from being lowered due to the mixing of the exhaust gas into the intake air; the muffler 50 adopts an impedance composite structure, and simultaneously reduces high-frequency noise and low-intermediate frequency noise.
In the present invention, the cooling air flow of the cooling suction fan 30 blows directly to the cylinder block, so that a certain negative pressure is generated at the muffler 50 at the upper portion of the cylinder block, and therefore, a small portion of the cooling air is sucked into the cooling air duct of the muffler 50 to cool the muffler 50 at the same time, the exhaust port of the muffler 50 is located at the rear end of the muffler 50, and the cooling air flows through the cooling air duct of the muffler 50 to form a negative pressure at the rear end of the muffler 50, so that the exhaust gas can be sucked out of the muffler 50, the exhaust back pressure of the engine 20 is reduced, and the performance of the. In addition, the cooling gas flows to the negative pressure area at the back of the silencer 50 and is mixed with the waste gas exhausted by the silencer 50, so that the temperature of the exhaust gas exhausted by the engine 20 is greatly reduced, and the infrared stealth of the air-cooled hybrid power system is greatly improved. The exhaust of the pod 10 is discharged at an angle to both sides, and the exhaust of the pod 10 does not interfere with the cooling air of the magneto 40. And the guide cover 10 completely covers the silencer 50, so that the noise of the silencer 50 can be absorbed partially, and the noise reduction effect is achieved.
Further, in a specific embodiment of the present invention, a heat shield plate 60 is disposed between the cylinder block of the engine 20 and the muffler 50 such that the cylinder block of the engine 20 and the muffler 50 are isolated from each other; in this embodiment, a heat insulation plate 60 is disposed between the cylinder block of the engine 20 and the muffler 50, and the heat insulation plate 60 is fixedly connected to the side wall of the air guide sleeve 10 to isolate the engine 20 from the muffler 50, so that the cylinder block of the engine 20 and the muffler 50 are isolated to form independent air ducts, respectively, and heat exchange between the muffler 50 and the cylinder block is prevented.
In another embodiment of the present invention, the cooling suction fan 30 is disposed at the input end of the engine 20, and the magneto 40 is disposed at the output end of the engine 20, that is, the cooling suction fan 30 is disposed opposite to the magneto 40, and the rotor 401 of the magneto 40 is shaped like a fan blade to form a discharge fan, and the direction of the air flow generated by the rotation of the rotor 401 is the same as the direction of the air flow generated by the cooling suction fan 30; cooling air is drawn into the coils of the stator 402 of the magneto 40 and expelled from the blades of the rotor 401 of the magneto 40 to cool the coils of the stator of the magneto 40. Meanwhile, the wind direction of the cooling suction fan 30 is consistent with the wind direction generated by the work of the magneto 40, so that the cooling air flow is prevented from colliding with the power of the cooling suction fan 30.
Further, in an exemplary embodiment of the present invention, a temperature sensor is disposed on a cylinder of the engine 20, and the temperature sensor is disposed between a spark plug of the engine and the cylinder block for measuring an operating temperature of the engine 20 in real time.
Furthermore, the invention is also provided with an ECU module which is respectively connected with the temperature sensor and the cooling suction fan 30; the ECU module receives a temperature signal of the temperature sensor, controls the rotating speed and the power of the cooling suction fan 30 according to the temperature signal, and realizes the control through the temperature signal feedback of the temperature sensor, so that the optimal cooling air quantity of the cooling suction fan 30 is realized, the cylinder block is ensured to run at the optimal temperature, and the optimal thermal efficiency of the engine is realized.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.

Claims (9)

1. A cooling structure of a hybrid system, characterized in that: the cooling structure comprises a guide cover wrapping the silencer, the guide cover is hollow inside, and the inside of an air outlet channel of the guide cover is upwards protruded to form a silencer mounting space for mounting the silencer.
2. The cooling structure of a hybrid system according to claim 1, characterized in that: one end of the air guide sleeve is opened to form an air inlet, and a cooling suction fan is arranged at the air inlet.
3. The cooling structure of the hybrid system according to claim 2, characterized in that: one end of the air guide sleeve opposite to the air inlet is provided with a magneto mounting opening, and two sides of the magneto mounting opening are provided with air outlet channels for guiding air outwards.
4. The cooling structure of a hybrid system according to claim 1, characterized in that: the muffler is directly attached to a cylinder block of the engine main body portion with an exhaust port of the muffler directed rearward, the exhaust direction being perpendicular to the intake direction.
5. The cooling structure of the hybrid system according to claim 1, 2, 3, or 4, characterized in that: the engine is wrapped in the air guide sleeve, a heat insulation plate is arranged between the cylinder body of the engine and the silencer, and the cylinder body of the engine and the silencer are mutually isolated.
6. The cooling structure of a hybrid system according to claim 1, characterized in that: the cooling suction fan is arranged at the input end of the engine, and the magnetor and the cooling suction fan are arranged oppositely and arranged at the output end of the engine.
7. The cooling structure of the hybrid system according to claim 6, characterized in that: the rotor of the magneto forms a fan blade to form a fan.
8. The cooling structure of a hybrid system according to claim 1, characterized in that: the temperature sensor is arranged between the spark plug of the engine and the cylinder body and used for measuring the working temperature of the engine in real time.
9. The cooling structure of a hybrid system according to claim 8, characterized in that: the cooling structure further comprises an ECU module, and the ECU module is respectively connected with the temperature sensor and the cooling suction fan.
CN202010905342.3A 2020-09-01 2020-09-01 Cooling structure of hybrid power system Pending CN111878215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010905342.3A CN111878215A (en) 2020-09-01 2020-09-01 Cooling structure of hybrid power system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010905342.3A CN111878215A (en) 2020-09-01 2020-09-01 Cooling structure of hybrid power system

Publications (1)

Publication Number Publication Date
CN111878215A true CN111878215A (en) 2020-11-03

Family

ID=73198907

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010905342.3A Pending CN111878215A (en) 2020-09-01 2020-09-01 Cooling structure of hybrid power system

Country Status (1)

Country Link
CN (1) CN111878215A (en)

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