WO2022157833A1 - ペンデュラム式マウントシステム - Google Patents
ペンデュラム式マウントシステム Download PDFInfo
- Publication number
- WO2022157833A1 WO2022157833A1 PCT/JP2021/001696 JP2021001696W WO2022157833A1 WO 2022157833 A1 WO2022157833 A1 WO 2022157833A1 JP 2021001696 W JP2021001696 W JP 2021001696W WO 2022157833 A1 WO2022157833 A1 WO 2022157833A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- power plant
- lower torque
- plant unit
- torque rod
- pendulum
- Prior art date
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- 230000005484 gravity Effects 0.000 claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 description 16
- 239000012212 insulator Substances 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000156302 Porcine hemagglutinating encephalomyelitis virus Species 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
- B60K5/12—Arrangement of engine supports
- B60K5/1241—Link-type support
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
- B60K5/04—Arrangement or mounting of internal-combustion or jet-propulsion units with the engine main axis, e.g. crankshaft axis, transversely to the longitudinal centre line of the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
- B60K5/12—Arrangement of engine supports
- B60K5/1208—Resilient supports
- B60K5/1216—Resilient supports characterised by the location of the supports relative to the motor or to each other
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
- B60K5/12—Arrangement of engine supports
- B60K5/1291—Supports comprising stoppers
-
- 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
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B75/20—Multi-cylinder engines with cylinders all in one line
-
- 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
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
- F16F1/3842—Method of assembly, production or treatment; Mounting thereof
- F16F1/3849—Mounting brackets therefor, e.g. stamped steel brackets; Restraining links
-
- 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
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B2075/1804—Number of cylinders
- F02B2075/1812—Number of cylinders three
Definitions
- the present invention relates to a pendulum mounting system for a power plant unit mounted on a vehicle.
- the power plant unit which generates the driving force that drives the vehicle, is mounted in the engine room and motor room.
- There are several types of mounting methods for the power plant unit on the vehicle body but in the pendulum type mounting system, the left and right upper parts of the power plant unit are mounted on the vehicle body, and the power plant unit is suspended. Torque reaction force from the tire and the drive shaft acts on the suspended power plant unit, and it swings about the upper mount as a fulcrum. Therefore, a member called a lower torque rod is attached to the lower portion of the power plant unit in order to restrict this swing. One end of the lower torque rod is attached to the lower portion of the power plant unit, and the other end is attached to the vehicle body on the rear side of the power plant unit 1.
- Patent Literature 1 listed below discloses a pendulum-type mounting system using two lower torque rods. In the disclosure of Patent Document 1, two torque rods control the behavior of a power plant unit during a frontal collision to protect a fuel filter arranged between the two torque rods.
- the pendulum mount system disclosed in Patent Document 1 aims to improve collision safety by the configuration of the lower torque rod, and does not disclose anything about reducing vibration and noise caused by the vibration of the internal combustion engine. .
- An object of the present invention is to provide a pendulum-type mounting system capable of reducing vibration and noise due to the configuration of a lower torque rod.
- a feature of the present invention is a pendulum mount system, which includes a pair of upper mounts for mounting the upper part of the power plant unit to the vehicle body, and a pair of first and second lower torque rods.
- the first and second lower torque rods connect the lower portion of the power plant unit to the vehicle body on the rear side.
- the first and second lower torque rods are located on opposite sides with respect to a reference plane including the center of gravity of the power plant unit.
- the first spring constant of the first lower torque rod is greater than or equal to the second spring constant of the second lower torque rod.
- the distance between the first plane including the first lower torque rod and the reference plane is less than or equal to the distance between the second plane including the second lower torque rod and the reference plane.
- FIG. 1 is a schematic perspective view showing a pendulum-type mounting system according to an embodiment.
- FIG. 2 is a schematic bottom view of the mounting system.
- FIG. 3 is a schematic rear view of the mounting system.
- FIG. 4 is a schematic side view of the mounting system.
- FIG. 5 is a perspective view of a first lower torque rod in the mounting system;
- FIG. 6 is a side view of the first lower torque rod.
- FIG. 7 is a perspective view of the second lower torque rod.
- FIG. 1 A pendulum mount system according to an embodiment will be described below with reference to FIGS. 1 to 7.
- FIG. An arrow FR in the drawing indicates the front of the vehicle body.
- 2 is a bottom view seen from arrow II in FIG. 3 is a rear view as seen from arrow III in FIG. 1.
- FIG. 4 is a side view seen from arrow IV in FIG. 1.
- the mounting system of this embodiment is a system for mounting the power plant unit 1 to the vehicle body.
- the power plant unit 1 of the present embodiment is a unit that generates driving force for running the vehicle, and is rigidly connected to an internal combustion engine (hereinafter simply referred to as an engine) 1E that generates driving force for running the vehicle and the engine 1E. It is equipped with a transmission 1T.
- An engine block of the engine 1E and a case of the transmission 1T are rigidly connected to each other by bolts.
- the engine 1E is an in-line three-cylinder transverse engine.
- the transmission 1T can take various forms such as manual transmission, automatic transmission, DCT and CVT.
- the output end of the crankshaft of the engine 1E is coupled with the input end of the transmission 1T (a clutch may be interposed therebetween).
- the power plant unit 1 of this embodiment is mounted in the engine room at the front of the vehicle.
- the power plant unit 1 drives front wheels (FWD) or four wheels (4WD).
- the power plant unit 1 also includes an integrally incorporated gear unit such as a final gear and a differential gear, and an integrally incorporated transfer in the case of 4WD.
- the power plant unit 1 also includes accessories such as an alternator and an air conditioning compressor fixed to the power plant unit 1 .
- the transmission 1T also includes a speed reduction gear unit and a speed increase gear unit that do not change gears.
- the power plant unit 1 does not include an engine mount 2 such as an upper mount 2U and a lower torque rod 2L, which will be described later, a drive shaft, and a propeller shaft in the case of 4WD.
- the power plant unit 1 is supported by the vehicle body via the engine mount 2, but the suspension member (subframe) is included in the vehicle body.
- the mounting system of this embodiment is of a pendulum type, and the power plant unit 1 is mounted on the vehicle body so as to be suspended.
- an upper mount 2U for mounting the upper portion of the power plant unit 1 to the vehicle body is provided.
- the upper mount 2U consists of an upper right mount 2UR for mounting the upper right portion of the power plant unit 1 to the vehicle body, and an upper left mount 2UL for mounting the upper left portion of the power plant unit 1 to the vehicle body.
- the power plant unit 1 is mounted on the vehicle body so as to be suspended by these upper mounts 2U. That is, the center of gravity G of the power plant unit 1 is positioned below a straight line passing through the pair of upper mounts 2U (upper right mount 2UR and upper left mount 2UL).
- a drive shaft is connected to the power plant unit 1. Due to the driving torque of the tire and the drive shaft, a torque reaction force acts on the power plant unit 1 to swing it with the upper mount 2U as a fulcrum. When the vehicle accelerates or decelerates, a torque reaction force acts so that the lower portion of the power plant unit 1 moves forward or backward. Therefore, in order to restrict the swinging of the power plant unit 1 due to these torque reaction forces, a lower torque rod 2L is provided to connect the lower part of the power plant unit 1 to the vehicle body at the rear side of the power plant unit 1.
- a pair of a first lower torque rod 2L1 and a second lower torque rod 2L2 are provided as the lower torque rod 2L. That is, the engine mount 2 also includes the first lower torque rod 2L1 and the second lower torque rod 2L2.
- the first lower torque rod 2L1 and the second lower torque rod 2L2 are located on opposite sides of the reference plane PR.
- the reference plane PR is a plane that includes the center of gravity G of the power plant unit 1 and is perpendicular to the lateral direction of the vehicle body.
- the first lower torque rod 2L1 and the second lower torque rod 2L2 extend parallel to the reference plane PR.
- the engine 1E power plant unit 1 becomes a source of vibration due to combustion in the piston, reciprocating motion of the piston, rotational motion of the crankshaft, and so on. Therefore, the engine mount 2 (upper mount 2U and lower torque rod 2L) incorporates an insulator for reducing transmission of vibration to the vehicle body. As the insulator, there are a liquid-filled type and a rubber type (in this embodiment, rubber insulators 24 and 27 which will be described later). Therefore, each lower torque rod 2L functions as an elastic body and has a spring constant.
- the first lower torque rod 2L1 has a first spring constant K1
- the second lower torque rod 2L2 has a second spring constant K2.
- the first spring constant K1 of the first lower torque rod 2L1 is greater than or equal to the second spring constant K2 of the second lower torque rod 2L2 (K1 ⁇ K2).
- one end of the first lower torque rod 2L1 having the first spring constant K1 is attached to the lower portion of the engine 1E, and the other end is attached to the vehicle body.
- one end of a second lower torque rod 2L2 having a second spring constant K2 is attached to the lower portion of the transmission 1T, and the other end is attached to the vehicle body.
- the engine mount 2 (upper mount 2U and lower torque rod 2L) of this embodiment does not incorporate an electronic control device for actively controlling vibration.
- the plane perpendicular to the width direction including the attachment point of the first lower torque rod 2L1 to the power plant unit 1 (engine 1E) is defined as the first plane P1.
- a second plane P2 is a plane perpendicular to the width direction that includes the attachment point of the second lower torque rod 2L2 to the power plant unit 1 (transmission 1T).
- a distance D1 between the first plane P1 and the reference plane PR described above and a distance D2 between the second plane P2 and the reference plane PR are defined. In this embodiment, the distance D1 is less than or equal to the distance D2 (D1 ⁇ D2).
- the first lower torque rod 2L1 includes an annular member 20 attached to the vehicle body and a pair of stays 22 attached to the power plant unit 1.
- the annular member 20 and stay 22 are made of metal. Note that FIG. 6 does not show the front stay 22 .
- a core member 21 made of metal is arranged at the center inside the annular member 20 , and the annular member 20 and the core member 21 are connected by a rubber insulator 24 .
- One end of the stay 22 is vertically swingably connected to the power plant unit 1 (engine 1E), and the other end is vertically swingably connected to the core member 21 .
- a first rubber projection 24a protrudes rearward from the inner peripheral surface of the annular member 20 .
- a second rubber projection 24a also protrudes forward from the rear side of the core member 21 (left side in FIG. 6).
- the first and second rubber protrusions 24a are formed integrally with the rubber insulator 24. As shown in FIG. The rubber forming the rubber insulator 24 covers the entire inner peripheral surface of the annular member 20 .
- a gap is formed between the first rubber protrusion 24 a and the inner peripheral surface of the annular member 20 when the power plant unit 1 is not rocked and is stationary. Similarly, a gap is formed between the second rubber projection 24a and the inner peripheral surface of the annular member 20 as well.
- the power plant unit 1 swings so that its lower portion moves rearward with respect to the vehicle body due to the torque reaction force from the drive shaft.
- the core member 21 connected to the power plant unit 1 via the stay 22 also moves rearward and contacts the second rubber projection 24a.
- the rearward stroke of the lower portion of the power plant unit 1 is restricted. That is, the first and second rubber projections 24a function as stoppers that restrict the stroke of the lower portion of the power plant unit 1 in the front-rear direction.
- the spring constant of the first lower torque rod 2L1 becomes larger than the above-described first spring constant K1 while the first or second rubber protrusion 24a is elastically deformed after the swing stroke is regulated.
- vibrations that do not involve a stroke (amplitude) large enough to be restricted by the stopper are suppressed by the first lower torque rod 2L1 (and the second lower torque rod 2L2) with the relatively small first spring constant K1.
- the spring constant becomes larger than the first spring constant K1 due to the stopper, and the anti-vibration function deteriorates.
- the maximum swing amount of the unit 1 is regulated.
- the second lower torque rod 2L2 includes a plate-shaped member 25 attached to the vehicle body and a U-shaped member 26 attached to the power plant unit 1 (transmission 1T).
- the plate member 25 and the U-shaped member 26 are made of metal.
- the plate-shaped member 25 is arranged in the center of the U-shaped member 26 , and the plate-shaped member 25 and the U-shaped member 26 are connected by a rubber insulator 27 .
- the plate member 25 is connected to the vehicle body so as to be able to swing horizontally, and the U-shaped member 26 is connected to the power plant unit 1 so as to be able to swing horizontally.
- the second lower torque rod 2L2 does not have a mechanism like the stopper of the first lower torque rod 2L1 described above.
- the second lower torque rod 2L2 does not have a stopper, its spring constant maintains the second spring constant K2 described above.
- the torque reaction force from the drive shaft is generated by the first lower torque rod 2L1 and the second lower torque rod. 2L2, it is possible to suppress an increase in the first spring constant K1 of the first lower torque rod 2L1. Therefore, the total spring constant composed of the parallel springs of the first spring constant K1 and the second spring constant K2 can be kept low, and even in the power plant unit 1 in which a large torque is generated in the drive shaft, vibration can be effectively suppressed. function can be exhibited.
- the first lower torque rod 2L1 and the second lower torque rod 2L2 are positioned on opposite sides of the reference plane PR including the center of gravity G of the power plant unit 1. Furthermore, as described above, (first spring constant K1) ⁇ (second spring constant K2) and (distance D1 between first plane P1 and reference plane PR) ⁇ (second plane P2 and reference plane PR) is the distance D2).
- first spring constant K1 ⁇ (second spring constant K2) and (distance D1 between first plane P1 and reference plane PR) ⁇ (second plane P2 and reference plane PR) is the distance D2).
- a first lower torque rod 2L1 and a second lower torque rod 2L2 with relatively small spring constants are provided instead of providing one lower torque rod with a large spring constant, two lower torque rods. Therefore, the first lower torque rod 2L1 and the second lower torque rod 2L2 can effectively reduce vibration and noise due to the small spring constant, that is, the soft rubber insulators 24 and 27, respectively.
- the size of each of the first lower torque rod 2L1 and the second lower torque rod 2L2 can be reduced. can. Therefore, it is possible to prevent the first lower torque rod 2L1 and the second lower torque rod 2L2 from interfering with surrounding parts (such as a transfer) when the power plant unit 1 swings (especially when the stroke is large). , the degree of freedom in layout design is improved.
- the first spring constant K1 and the second spring constant K2 are set small to prevent the power plant unit 1 from swinging. It is also possible to increase the stroke of Since the first spring constant K1 and the second spring constant K2 can be set small, transmission of the vibration of the power plant unit 1 to the vehicle body via the first lower torque rod 2L1 and the second lower torque rod 2L2 can be more effectively suppressed. can do.
- the first lower torque rod 2L1 and the second lower torque rod 2L2 are positioned on opposite sides of the reference plane PR including the center of gravity G, and K1 ⁇ K2 and D1 ⁇ D2 holds. Therefore, the first lower torque rod 2L1 effectively acts on one side in the width direction with respect to the center of gravity G (reference plane PR), and at the same time, the second lower torque rod 2L2 acts effectively on the other side. . As a result, the vibration caused by the power plant unit 1 can be effectively prevented from being transmitted to the vehicle body.
- K1 ⁇ K2 and D1 ⁇ D2 are established, and a relationship similar to the so-called lever ratio relationship is established with respect to the center of gravity G. Therefore, with respect to the center of gravity G, the vibration of the power plant unit 1 can be symmetrically and well-balanced suppressed on one side and the other side of the center of gravity G (reference plane PR).
- the engine 1E of this embodiment is a transverse in-line three-cylinder engine. Odd-numbered cylinder engines such as in-line three-cylinder engines and in-line five-cylinder engines generate primary vibration. The primary vibration is more pronounced in a 3-cylinder engine with a longer ignition interval than in a 5-cylinder engine. The primary vibration of the engine 1E causes the power plant unit 1 to undergo precession vibration with respect to the center of gravity G. As shown in FIG. The vibrating force due to this sliver vibration causes idling vibration.
- the first lower torque rod 2L1 and the second lower torque rod 2L2 are positioned on opposite sides of the reference plane PR including the center of gravity G, and K1 ⁇ K2. and D1 ⁇ D2. Therefore, the vibration caused by the power plant unit 1, which causes idle vibration, can be effectively prevented from being transmitted to the vehicle body.
- the slant wheel vibration that causes the idle vibration has opposite phases on one side and the other side of the center of gravity G (reference plane PR). That is, when the first lower torque rod 2L1 is pulled, the second lower torque rod 2L2 is compressed, and the sliver vibration cancels each other on both sides of the reference plane PR. As a result, the vibration itself that causes idle vibration is canceled.
- the first lower torque rod 2L1 has a stopper that restricts the swing stroke of the lower portion of the power plant unit 1 in the front-rear direction.
- the second lower torque rod 2L2 has no stopper. That is, the second spring constant K2 of the second lower torque rod 2L2, which does not have a stopper, can always effectively suppress vibration. Therefore, noise caused by vibration of the power plant unit 1 can be more effectively suppressed by the first lower torque rod 2L1 and the second lower torque rod 2L2.
- the power plant unit in the present invention includes an internal combustion engine that serves as a vibration source.
- the internal combustion engine (engine) 1E generates the driving force for running the vehicle.
- the power plant unit in the present invention may include a drive motor that generates driving force for running the vehicle, and an internal combustion engine that generates electric power supplied to the drive motor (the drive motor and the internal combustion engine are rigid). are tied).
- the output of the internal combustion engine may or may not be used as driving force for running the vehicle.
- the powerplant unit of the present invention may also include a hybrid electric vehicle (HEV) powerplant unit.
- HEV hybrid electric vehicle
- the HEV (including PHEV) power plant unit also has a generator motor rigidly connected to the power plant unit in addition to the internal combustion engine and drive motor, this generator motor is also included in the power plant unit.
- a power control unit (PCU) that controls the HEV system is rigidly connected to the power plant unit, this PCU is also included in the power plant unit.
- the PCU is not fixed to the power plant unit and is only electrically connected with a cable, it is not included in the power plant unit.
- a battery electric vehicle (BEV) is equipped with an internal combustion engine as a range extender and the drive motor is rigidly connected to the internal combustion engine, the drive motor and the internal combustion engine are included in the power plant unit of the present invention. .
- the first lower torque rod 2L1 having a stopper is attached to one side (engine 1E) in the width direction with respect to the center of gravity G of the power plant unit 1, and the second lower torque rod having no stopper. 2L2 was attached to the other side (transmission 1T).
- the first lower torque rod 2L1 having a stopper may be attached to the other side in the width direction with respect to the center of gravity G of the power plant unit 1, and the second lower torque rod 2L2 may be attached to one side.
- the first lower torque rod 2L1 having the first spring constant K1 has a stopper
- the second lower torque rod 2L2 having the second spring constant K2 ( ⁇ K1) does not have a stopper. rice field.
- the first lower torque rod 2L1 having the first spring constant K1 may have no stopper and the second lower torque rod 2L2 having the second spring constant K2 ( ⁇ K1) may have a stopper.
- the vibration of the power plant unit 1 can be controlled by the center of gravity G (reference plane PR). It can be suppressed symmetrically and well-balanced on one side and the other side.
- the engine mount system is applied to the power plant unit 1 having the in-line three-cylinder engine 1E.
- the present invention is also applicable to engine mounting systems for other engine types.
- the same effects as those for the in-line three-cylinder engine described above can be obtained not only for the in-line three-cylinder engine but also for the in-line five-cylinder engine.
- the metal members of the first lower torque rod 2L1 and the second lower torque rod 2L2 may be made of synthetic resin.
- Power plant unit 1E Internal combustion engine (engine) 1T Transmission 2 Engine mount 2U Upper mount 2UR Upper right mount 2UL Upper left mount 2L Lower torque rod 2L1 First lower torque rod 2L2 Second lower torque rod 24a Rubber protrusion (stopper) K1 First spring constant K2 (of first lower torque rod 2L1) Second spring constant G (of second lower torque rod 2L2) Center of gravity PR (of power plant unit 1) Reference plane P1 First plane P2 Second plane D1 ( Distance D2 (between reference plane PR and first plane P1) Distance (between reference plane PR and second plane P2)
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
1E 内燃機関(エンジン)
1T トランスミッション
2 エンジンマウント
2U アッパーマウント
2UR 右上マウント
2UL 左上マウント
2L ロアトルクロッド
2L1 第一ロアトルクロッド
2L2 第二ロアトルクロッド
24a ラバー突起(ストッパ)
K1 (第一ロアトルクロッド2L1の)第一バネ定数
K2 (第二ロアトルクロッド2L2の)第二バネ定数
G (パワープラントユニット1の)重心
PR 基準面
P1 第一面
P2 第二面
D1 (基準面PRと第一面P1との)距離
D2 (基準面PRと第二面P2との)距離
Claims (3)
- ペンデュラム式マウントシステムであって、
内燃機関を備えた、車両を走行させる駆動力を発生するパワープラントユニットと、
前記パワープラントユニットの右上部を車体にマウントする右上マウントと、
前記パワープラントユニットの左上部を前記車体にマウントする左上マウントと、
前記パワープラントユニットの下部を前記パワープラントユニットの後側で前記車体と連結する一対の第一及び第二ロアトルクロッドと、を備えており、
前記第一及び第二ロアトルクロッドが、前記パワープラントユニットの重心Gを含む、前記車体の幅方向に垂直な基準面に対して、互いに反対側に位置しており、
前記第一ロアトルクロッドの第一バネ定数は、前記第二ロアトルクロッドの第二バネ定数以上であり、
前記第一ロアトルクロッドの前記パワープラントユニットへの取付点を含む、前記幅方向に垂直な面を第一面とし、かつ、前記第二ロアトルクロッドの前記パワープラントユニットへの取付点を含む、前記幅方向に垂直な面を第二面とした場合に、前記第一面と前記基準面との距離が、前記第二面と前記基準面の距離以下である、ペンデュラム式マウントシステム。 - 請求項1に記載のペンデュラム式マウントシステムであって、
前記内燃機関が直列三気筒エンジンである、ペンデュラム式マウントシステム。 - 請求項1又は2に記載のペンデュラム式マウントシステムであって、
前記第一及び第二ロアトルクロッドの何れか一方のみが、前記パワープラントユニットの前記下部の車体前後方向の揺動ストロークを規制するストッパを備えている、ペンデュラム式マウントシステム。
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JP2022501291A JP7260051B2 (ja) | 2021-01-19 | 2021-01-19 | ペンデュラム式マウントシステム |
CN202180004789.6A CN116601025B (zh) | 2021-01-19 | 2021-01-19 | 摆式悬架系统 |
US17/629,092 US11926217B2 (en) | 2021-01-19 | 2021-01-19 | Pendulum type mount system |
EP21843576.6A EP4282682A4 (en) | 2021-01-19 | 2021-01-19 | PENDULUM-LIKE STORAGE |
PCT/JP2021/001696 WO2022157833A1 (ja) | 2021-01-19 | 2021-01-19 | ペンデュラム式マウントシステム |
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US11926217B2 (en) | 2024-03-12 |
US20240034143A1 (en) | 2024-02-01 |
CN116601025B (zh) | 2023-11-14 |
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