CN115388131A - Intelligent power unit vehicle-mounted vibration damping device and using method thereof - Google Patents
Intelligent power unit vehicle-mounted vibration damping device and using method thereof Download PDFInfo
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- CN115388131A CN115388131A CN202211330926.8A CN202211330926A CN115388131A CN 115388131 A CN115388131 A CN 115388131A CN 202211330926 A CN202211330926 A CN 202211330926A CN 115388131 A CN115388131 A CN 115388131A
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- intelligent power
- power unit
- vehicle
- unit
- vibration damper
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/0232—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means with at least one gas spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/027—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means comprising control arrangements
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a vehicle-mounted vibration damper of an intelligent power unit and a use method thereof. The shock pad unit comprises two vertically symmetrical composite rubber pad assemblies, and an annular air bag is arranged between the rubber pad assemblies. The damping cushion unit compounded by rubber and the air bag is adopted, so that the damping effect can be achieved; the air bag is used for improving the effect of absorbing vibration, meanwhile, the air bag can be inflated and supported when the rubber pad is abnormal, and the air bag can share the pressure of the rubber pad.
Description
Technical Field
The invention relates to a vehicle-mounted vibration damper, in particular to a vehicle-mounted vibration damper of an intelligent power unit and a using method thereof.
Background
The conventional vibration damping device for the intelligent power unit (engine, transmission and the like) of the vehicle is usually a rubber pad arranged in front of the intelligent power unit and a vehicle chassis, mainly absorbs vibration generated in the working process of part of the intelligent power unit, reduces abnormal sound and avoids the vibration from being transmitted to parts in the vehicle connected with the chassis through the vehicle chassis. Namely, the main research direction aiming at the point is to improve the damping effect and monitor the state of the damping pad unit.
Disclosure of Invention
The invention aims to provide an intelligent power unit vehicle-mounted vibration damper and a using method thereof, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an on-vehicle damping device of intelligence power pack, is including installing a plurality of shock pad unit between intelligence power pack and vehicle chassis. The shock pad unit comprises two vertically symmetrical composite rubber pad assemblies, and an annular air bag is arranged between the rubber pad assemblies. The vehicle power unit is characterized by further comprising a plurality of bolts for connecting the intelligent power unit, the vehicle chassis and the shock pad units, the bolts sequentially penetrate through holes in the vehicle chassis, center holes of the shock pad units and mounting holes in the edges of the intelligent power unit and are connected with nuts, and the bolts and the nuts tightly press and fix the shock pad units between the vehicle chassis and the intelligent power unit.
As a further scheme of the invention: the intelligent power unit is characterized in that a metal support sleeve is sleeved on a part of bolts between the nuts and the mounting holes at the edge of the intelligent power unit, the metal support sleeve is tightly pressed and connected to the edge of the intelligent power unit by the nuts, a tower-shaped spring is arranged outside the metal support sleeve, a round table welded to the outer surface of the top of the metal support sleeve is welded to one end of the tower-shaped spring with a small diameter, a counterweight ring is welded to one end of the tower-shaped spring with a large diameter, and the counterweight ring is made of stainless steel or other materials. The counterweight ring is arranged on a base plate welded on the outer surface of the lower end of the metal support sleeve. The surface of the backing plate facing the counterweight ring is bonded with a wear-resistant layer which can be a polytetrafluoroethylene plastic sheet. And a damping strip made of rubber is clamped between the rings of the tower-shaped spring.
As a further scheme of the invention: the rubber pad assembly comprises a limiting plate, a rubber pad and an outer protection plate, the two surfaces of the rubber pad are respectively and compositely connected with the limiting plate and the outer protection plate, and holes for bolts to penetrate through are formed in the central positions of the limiting plate, the rubber pad and the outer protection plate. The limiting plates of the two rubber pad assemblies are oppositely arranged, the annular air bag coaxial with the two rubber pad assemblies is arranged between the two rubber pad assemblies, the air tap of the annular air bag is positioned on one side of the outer surface of the shock pad unit, the central hole of each limiting plate is arranged on the outer surface of the middle sleeve in a sliding mode, the outer end of one end of the middle sleeve is formed into an annular limiting position, the other end of the middle sleeve can be fixedly connected with another limiting ring through a bolt, and the outer diameter of each limiting ring and the outer diameter of the annular limiting position at one end of the middle sleeve are both larger than the inner diameter of the central hole of the limiting plate; the height sum of the middle sleeve and the limiting ring is smaller than half of the height of the shock pad unit, and a compression space is reserved between the rubber pad and the annular air bag.
As a further scheme of the invention: air cock passes through the gas outlet that the pipeline connects gradually electron barometer, electromagnetism three-way valve, check valve and the logical pipeline of bumper pad unit, and the output of pump is passed through in the air inlet of the logical pipeline of the expert, and the general fixed mounting of pump is at vehicle chassis, and wherein the signal output part connection director's of electron barometer collection port, output port electric connection pump and the electromagnetism three-way valve of controller. The controller can be a current single-chip microcomputer controller, and one output port of the electromagnetic three-way valve is idle and used for adjusting air bleeding.
A use method of an intelligent power unit vehicle-mounted vibration damper comprises the following specific steps:
the method comprises the following steps: before the shock pad units are installed, the pressure in each shock pad unit is equal to the atmospheric pressure by manually controlling the inflator pump;
step two: the intelligent power unit is placed on the shock pad unit and fixed through corresponding bolts and nuts, and the inflator pump and the electromagnetic valve are manually controlled, so that the air pressure displayed by the electronic barometer corresponding to each shock pad unit is the same;
step three: when the vehicle runs, the electronic barometer monitors the pressure of each shock pad unit in real time, and the controller is provided with an air pressure fluctuation threshold value, so that deflation and inflation operations are timely performed when pressure is abnormal, and meanwhile, the state of each shock pad unit can be timely known, so that the shock pad units can be timely replaced.
Compared with the prior art, the invention has the beneficial effects that: the damping cushion unit compounded by rubber and the air bag is adopted, so that the damping effect can be achieved; the air bag is used for improving the effect of absorbing shock, and meanwhile, the inflation and deflation structure of the air bag can perform inflation support when the rubber pad is abnormal, and the air bag can share the pressure of the rubber pad; in addition, the air bag is matched with the electronic barometer to monitor the unit state of the shock pad.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent power unit vehicle-mounted vibration damping device.
Fig. 2 is a schematic structural diagram of a shock pad unit in the vehicle-mounted vibration damping device of the intelligent power unit.
FIG. 3 is a schematic diagram of a plurality of shock pad units used in cooperation in an intelligent power unit vehicle-mounted damping device.
In the figure: the device comprises a shock pad unit 1, an intelligent power unit 2, a base plate 3, a tower-shaped spring 4, a damping strip 41, a metal support sleeve 5, a nut 6, a bolt 7 and a vehicle chassis 8; the air bag type air bag inflation device comprises an annular air bag 9, a limiting plate 10, a rubber pad 11, a limiting ring 12, a middle sleeve 13, an air nozzle 14, an outer protection plate 15, an electronic barometer 16, an electromagnetic three-way valve 17, a one-way valve 18, a multi-way pipeline 19 and an inflator pump 20.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, in an embodiment of the present invention, an intelligent power unit vehicle-mounted vibration damping device includes a plurality of vibration damping pad units 1 installed between an intelligent power unit 2 and a vehicle chassis 8.
The shock pad unit 1 is located between the intelligent power unit 2 and the vehicle chassis 8, wherein the intelligent power unit 2 is mainly an engine and can also be a transmission and other parts which are easy to vibrate, the shock pad unit 1 is used for weakening the vibration of a power assembly and transmitting the vibration to the parts such as a seat connected with the chassis through the chassis, so that the comfort in the vehicle is improved, and other parts connected on the chassis are protected to avoid the damage of the vibration.
The bolt 7 sequentially penetrates through a through hole in the vehicle chassis 8, a center hole of the shock pad unit 1 and a mounting hole in the edge of the intelligent power unit 2 and is connected with the nut 6, and the plurality of shock pad units 1 are tightly pressed and fixed between the vehicle chassis 8 and the intelligent power unit 2 through the bolt 7 and the nut 6;
a metal support sleeve 5 is sleeved on a part of a bolt 7 between a nut 6 and a mounting hole at the edge of the intelligent power unit 2, the metal support sleeve 5 is tightly pressed by the nut 6 and connected to the edge of the intelligent power unit 2, a tower-shaped spring 4 is arranged outside the metal support sleeve 5, one end of the tower-shaped spring 4 with a small diameter is welded with a circular table welded on the outer surface of the top of the metal support sleeve 5, one end of the tower-shaped spring 4 with a large diameter is welded with a counterweight ring (the inner diameter of the counterweight ring is larger than the outer diameter of the metal support sleeve 5), and the counterweight ring is a circular ring made of stainless steel or other materials; the counterweight ring is placed on a backing plate 3 welded on the outer surface of the lower end of a metal support sleeve 5, a wear-resistant layer is adhered to the surface of the backing plate 3 facing the counterweight ring, the wear-resistant layer can be a polytetrafluoroethylene plastic sheet, at least one section of rubber damping strip 41 is clamped between rings of a tower-shaped spring 4, the length of the damping strip 41 can be 8-15cm, and grooves for clamping the rings are formed in two sides of the damping strip 41 in order to prevent falling; when the vibration of the intelligent power unit is transmitted to the edge, the tower-shaped spring 4 can absorb the vibration, meanwhile, the counterweight ring can also store energy when being matched with the tower-shaped spring 4 to vibrate, weaker vibration is consumed by friction and patting of the counterweight ring on the wear-resistant layer, and meanwhile, the damping strips 41 can also participate in part of energy absorption and energy dissipation; the vibration damping device is used for damping vibration of the intelligent power unit, and accordingly vehicle use feeling is improved.
The shock pad unit 1 comprises two vertically symmetrical and compounded rubber pad components, each rubber pad component comprises a limiting plate 10, a rubber pad 11 and an outer protection plate 15, the two sides of each rubber pad 11 are respectively and compositely connected with the limiting plate 10 and the outer protection plate 15, holes for bolts 7 to penetrate through are formed in the central positions of the limiting plates 10, the rubber pad components 10 are oppositely arranged, an annular air bag 9 coaxial with the rubber pad components is arranged between the two rubber pad components, an air tap 14 of the annular air bag 9 is located on one side of the outer surface of the shock pad unit 1, a central hole of each limiting plate 10 is arranged on the outer surface of a middle sleeve 13 in a sliding mode, an outer end of one end of the middle sleeve 13 is formed into an annular limiting position, the other end of the middle sleeve 13 can be fixedly connected with another limiting ring 12 through the bolts 7, and the outer diameter of each limiting ring 12 and the outer diameter of the annular limiting position at one end of the middle sleeve 13 are larger than the inner diameter of the central hole of the limiting plate 10; the height sum of the middle sleeve 13 and the limiting ring 12 is smaller than half of the height of the shock pad unit 1, and a compression space is ensured between the rubber pad 11 and the annular air bag 9.
The air tap 14 in the cushion unit 1 is sequentially connected with an electronic barometer 16, an electromagnetic three-way valve 17, a one-way valve 18 and an air outlet of a multi-way pipeline 19 through pipelines, an air inlet of the multi-way pipeline 19 is connected with an output end of an inflator pump 20 through a pipeline, the inflator pump 20 is generally fixedly installed on a vehicle chassis 8, a signal output end of the electronic barometer 16 is connected with an acquisition port of a controller, and an output port of the controller is electrically connected with the inflator pump 20 and the electromagnetic three-way valve 17. The controller can be a current single-chip microcomputer controller, and one of the output ports of the electromagnetic three-way valve 17 is idle and used for adjusting the air bleeding.
A use method of an intelligent power unit vehicle-mounted vibration damper comprises the following specific steps:
the method comprises the following steps: before the shock pad units 1 are installed, the pressure in each shock pad unit 1 is equal to the atmospheric pressure by manually controlling the inflator 20;
step two: the intelligent power unit is placed on the shock pad units 1 and fixed through the corresponding bolts 7 and nuts 6, and the inflator pump 20 and the electromagnetic valve 17 are manually controlled, so that the air pressure displayed by the electronic barometers 16 corresponding to each shock pad unit 1 is the same;
step three: during the running process of the vehicle, the electronic barometer 16 monitors the pressure of each cushion unit 1 in real time, and sets an air pressure fluctuation threshold value in the controller, for example, the air pressure fluctuation threshold value is normal when the air pressure threshold value is within the range of 10-20KPa, when the pressure is abnormal (namely, when the pressure is out of the threshold value), the deflation and inflation operations are carried out in time, and meanwhile, the state of the cushion unit 1 can be known in time, so that the cushion unit 1 can be replaced in time.
According to the intelligent power unit, the vibration of the intelligent power unit can be weakened through the composite structure of the rubber pad 11 and the annular air bag 9, and meanwhile, the air bag can better absorb the vibration and eliminate noise. The preset mode is also used for ensuring that the riding driving is more comfortable.
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 various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (10)
1. The vehicle-mounted vibration damper for the intelligent power unit is characterized by comprising a plurality of vibration damping pad units (1) which are arranged between an intelligent power unit (2) and a vehicle chassis (8); the shock pad unit (1) comprises two vertically symmetrical composite rubber pad components, and an annular air bag (9) is arranged between the rubber pad components.
2. The vehicle-mounted vibration damping device for the intelligent power unit according to claim 1, further comprising a plurality of bolts (7) for connecting the intelligent power unit (2), the vehicle chassis (8) and the vibration damping pad units (1), wherein the bolts (7) sequentially penetrate through holes in the vehicle chassis (8), center holes of the vibration damping pad units (1) and mounting holes in the edge of the intelligent power unit (2) and are connected with nuts (6), and the bolts (7) and the nuts (6) tightly press and fix the vibration damping pad units (1) between the vehicle chassis (8) and the intelligent power unit (2).
3. The vehicle-mounted intelligent power unit vibration damper according to claim 2, wherein a metal support sleeve (5) is sleeved on a part of the bolt (7) between the nut (6) and the mounting hole at the edge of the intelligent power unit (2), the metal support sleeve (5) is tightly pressed and connected to the edge of the intelligent power unit (2) by the nut (6), a tower-shaped spring (4) is arranged outside the metal support sleeve (5), one end of the tower-shaped spring (4) with a small diameter is welded to a circular truncated cone welded to the outer surface of the top of the metal support sleeve (5), and one end of the tower-shaped spring (4) with a large diameter is welded to a counterweight ring.
4. The vehicle-mounted vibration damper for intelligent power units as claimed in claim 3, wherein the counterweight ring is placed on a backing plate (3) welded on the outer surface of the lower end of the metal support sleeve (5).
5. The vehicle-mounted vibration damper for intelligent power units according to claim 4, wherein a wear-resistant layer is bonded on the surface of the backing plate (3) facing the counterweight ring, and the wear-resistant layer can be a polytetrafluoroethylene plastic sheet.
6. The vehicle-mounted vibration damper for intelligent power units according to claim 5, characterized in that a damping strip (41) made of rubber is clamped between rings of the tower-shaped spring (4).
7. The vehicle-mounted intelligent power unit vibration damper according to claim 6, wherein the rubber pad assembly comprises a limiting plate (10), a rubber pad (11) and an outer protection plate (15), two surfaces of the rubber pad (11) are respectively and compositely connected with the limiting plate (10) and the outer protection plate (15), and holes for bolts (7) to pass through are formed in the central positions of the limiting plate (10), the rubber pad (11) and the outer protection plate (15).
8. The vehicle-mounted intelligent power unit vibration damper according to claim 7, wherein the limiting plates (10) of the two rubber cushion assemblies are arranged oppositely, the annular air bag (9) coaxial with the two rubber cushion assemblies is arranged between the two rubber cushion assemblies, the air tap (14) of the annular air bag (9) is located on one side of the outer surface of the vibration damper unit (1), the central hole of the limiting plate (10) is arranged on the outer surface of the middle sleeve (13) in a sliding mode, the outer end of one end of the middle sleeve (13) is formed into an annular limiting position, the other end of the middle sleeve (13) can be fixedly connected with another limiting ring (12) through the bolt (7), and the outer diameter of the limiting ring (12) and the outer diameter of the annular limiting position of one end of the middle sleeve (13) are both larger than the inner diameter of the central hole of the limiting plate (10); the height sum of the middle sleeve (13) and the limiting ring (12) is smaller than half of the height of the shock pad unit (1).
9. The vehicle-mounted vibration damper of the intelligent power unit according to claim 8, wherein the air nozzle (14) of the cushion unit (1) is sequentially connected with the air outlet of the electronic barometer (16), the electromagnetic three-way valve (17), the one-way valve (18) and the multi-way pipe (19) through pipes, the air inlet of the multi-way pipe (19) is connected with the output end of the inflator pump (20) through a pipe, the inflator pump (20) is generally and fixedly mounted on the vehicle chassis (8), the signal output end of the electronic barometer (16) is connected with the acquisition port of the controller, the output port of the controller is electrically connected with the inflator pump (20) and the electromagnetic three-way valve (17), and one of the output ports of the electromagnetic three-way valve (17) is idle.
10. The use method of the intelligent power unit vehicle-mounted vibration damper according to claim 9 is characterized by comprising the following specific steps:
the method comprises the following steps: before the shock pad units (1) are installed, the pressure in each shock pad unit (1) is equal to the atmospheric pressure by manually controlling the inflator pump (20);
step two: the intelligent power unit is placed on the shock pad unit (1) and fixed through the corresponding bolt (7) and nut (6), and the inflator pump (20) and the electromagnetic valve (17) are manually controlled, so that the air pressure displayed by the electronic barometer (16) corresponding to each shock pad unit (1) is the same;
step three: when the vehicle runs, the electronic barometer (16) monitors the pressure of each shock pad unit (1) in real time, and through setting an air pressure fluctuation threshold value in the controller, deflation and inflation operations are timely performed when pressure is abnormal, and meanwhile, the state of the shock pad unit (1) can be timely known, so that timely replacement is facilitated.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211330926.8A CN115388131B (en) | 2022-10-28 | 2022-10-28 | Intelligent power unit vehicle-mounted vibration damping device and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211330926.8A CN115388131B (en) | 2022-10-28 | 2022-10-28 | Intelligent power unit vehicle-mounted vibration damping device and using method thereof |
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| CN115388131A true CN115388131A (en) | 2022-11-25 |
| CN115388131B CN115388131B (en) | 2023-04-11 |
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| CN214578556U (en) * | 2021-03-02 | 2021-11-02 | 长城汽车股份有限公司 | Shock pad |
| CN214578588U (en) * | 2021-03-16 | 2021-11-02 | 安徽天翔橡塑有限公司 | Combined vibration-proof rubber mat for compressor |
| CN215487397U (en) * | 2021-06-18 | 2022-01-11 | 桐乡市玉溪针织有限公司 | Damping base for circular knitting machine |
| KR102374015B1 (en) * | 2021-11-12 | 2022-03-14 | 주식회사 저스트 | Airbounce system for image photographing |
| CN216867391U (en) * | 2021-12-15 | 2022-07-01 | 沈阳邦克机电设备有限公司 | Shock-absorbing rubber pad |
| CN114347734A (en) * | 2022-01-19 | 2022-04-15 | 江苏英拓动力科技有限公司 | Wading protection structure of hybrid new energy military vehicle |
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