Classifications

• • 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
• • 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
  • B60K2005/006—Arrangement or mounting of internal-combustion or jet-propulsion units the internal combustion or jet propulsion unit is arranged behind the rear axle
• • 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
  • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
  • B60Y2200/00—Type of vehicle
  • B60Y2200/10—Road Vehicles
  • B60Y2200/14—Trucks; Load vehicles, Busses
  • B60Y2200/143—Busses

Definitions

• the invention relates to a transmission suspension structure for rear engine vehicles, mainly buses, where the drive engine and the gearbox are built uniaxially to form a transmission, the common axle of which is roughly parallel with the vertical centerline of the bus.
• the frame carries an engine/transmission unit located crosswise, and on one side it is suspended by two long vertical bars from a frame structure member located in the vicinity of the rear bus wall. At both ends, the vertical bars are linked to the frame, i.e. to the skeleton by adjoining members including flexible rubber disks.
• the frame adjoins the bus skeleton with flexible joints, at a height close to the frame.
• This approach is described in ⁇ patent specification HU-212.315. It is a precondition of application that above the whole frame there should be a skeleton structure of a loading capacity providing appropriate strength for adjoining the vertical suspension bars.
• the objective of our invention was to find a solution which could be used for rear engine buses even if there was no load bearing skeleton structure near the rear wall, because of the body being made of fiber reinforced plastic, where it is a basic design requirement to make sure that the force is transferred over large surfaces and that its direction is in harmony with the load bearing characteristics of the structure.
• our invention relates to a transmission suspension structure for a rear engine vehicle, mainly buses, where the drive engine and the gearbox are built uniaxially to form a rigid transmission unit, which has suspension brackets in front of and behind the center of gravity of the unit, in respect of the geometric axis of rotation of its main axis, the suspension bracket(s) behind the center of gravity is (are) adjoined to the gearbox, a further two suspension brackets are adjoined to the lower ends of the two suspension bars holding the transmission, and at the upper ends of the said suspension bars there are flexible adjoining members for linkage to the body of the bus in the vicinity of its right hand side and left hand side walls, there is a flexible suspension bracket on each of the two sides of the drive engine with a suspension bar connected to each, and the said suspension bars are arranged in a way that they are inclined to the center of gravity of the transmission unit, and to the sidewalls of the body.
• the suspension bars include an angle of approx. 15 degrees with the vertical, and -
• the flexible adjoining member is designed as a rubber joint, and it has a through-pin normal to the axis of the suspension bar with a fixing member on both sides of the rubber joint.
• the installed flexible units/rubber joints are pre-tensioned in all operating conditions of the engine, e.g. also when the engine is not rarining, and the direction of forces transferred by them is determined, consequently the direction and rate of forces imposed on the body nodes can be accurately planned.
• This condition carries great importance in the case of a body made of glass fiber reinforced plastic resin, for which an appropriate solution was sought, because the suspension force could be taken to a node generated at the intersection of the three thick load bearing walls of the body, at the upper adjoining point of the slanted suspension bar.
• the node consists of the following three walls: engine compartment lid, side wall, engine compartment front wall. They are secured to one another by bonding and partly also by a brace.
• Fig. 1 shows the transmission and its suspension as viewed from the front (that is vis-a-vis the engine),
• Fig. 2 shows a side view
• Fig. 3 shows a top view.
• the suspension equipment of the transmission 1 is shown together with the transmission 2, where the transmission 2 has an internal combustion piston engine 3 and screwed to it is the gearbox 4, with drive axle 5.
• the transmission 1 is installed into the body 6 of the rear-engine bus, which said body is made of glass fiber reinforced hardening synthetic resin.
• the transmission 1 is embedded in the transmission support frame 7, using two flexible front engine support brackets 8 and two flexible rear engine support brackets 9 in a way and finish well-known in prior art.
• the front engine support brackets 8 are inclined.
• the transmission support frame 7 has an oblong shape, with a beam 10 on each of the right and left hand sides of the vertical engine 3.
• These said beams 10 are connected below the engine 3 by the transversal support 11 and in the back below the gearbox 4 by the transversal support 12.
• support brackets are welded, with bearing surfaces 19 on its nose 18, to support the bearing surfaces 24 of the pin 22 of the lower rubber joint 21 of the suspension bar 20.
• the bearing surfaces 24 are joined by the bolts 25 to the support bracket 17.
• the threaded stem 27 of the annular head 26 of the rubber joint 21 is screwed into the threaded end 28 of the suspension bar 20, which said threaded end is designed with the slot 29, and it is secured against lurning by the clamping bolts 30.
• the threaded joint enables the adjustment of the length of the suspension bar 20, as well as the adjustment vis-a-vis each other the positions of the pins 22 of the rubber joints 21 screwed into the two threaded ends 28 of the suspension bar 20.
• the same rubber joint 21 is screwed, of which ends the upper one is screwed to the support bracket 31 built into the body 6.
• the suspension bar 20 - projected to the cross section plane of the body - includes an angle of approx. 30 degrees with the vertical. Normal to this is the bearing surface 34 of the nose 33 of the support bracket 31, and to this bearing surface the bearing surfaces 24 at the ends 23 of the pin 22 of the rubber joint 21 are screwed using the bolts 25.
• the support bracket 31 is an L-shaped steel plate, with one leg 32 screwed to the engine compartment lid, and with the other leg 35 screwed to the rear wall of the passenger compartment. Vis-a-vis the support brackets 31, the positions of the support brackets 17 are selected in a way that projected to the floor plane (horizontal plane) of the body, each suspension bar 20 includes an angle of approximately 15 degrees with the cross section plane of the body.
• the transmission unit 2 and the engine support frame 7, respectively, are clamped in the vicinity of the rear transversal support 12 - through the support brackets 36 welded to the beams 10 - to the engine compartment front wall and floor of the body, because L-shaped support brackets are screwed to them.
• Fixed by the bolts 25, the bearing surface 24 at the end 23 of the pin 22 of each rubber joint 21 is held by the horizontal support surface 37 of the support bracket 36.
• the rubber joint 21 has a pin 38, which is embedded in the bushing 39 of >th'e support bracket 36. At the end of the pin 38, the axial clearance is limited by the washer 40 and an axle nut.
• the transmission suspension unit 1 is suspended in the body in a very favorable way from the aspect of vibration load, because the transmission unit 2 is flexibly supported in the transmission frame 7, and the latter is suspended in the body by the rubber joints 21.
• each suspension bar 20 is screwed, of which ends the upper one is screwed to the support bracket 31 built into the body 6.
• the suspension bar 20 - projected to the cross section plane of the body - includes an angle of approx. 30 degrees with the vertical. Normal to this is the bearing surface 34 of the nose 33 of the support bracket 31, and to this bearing surface the bearing surfaces 24 at the ends 23 of the pin 22 of the rubber joint 21 are screwed using the bolts 25.
• the support bracket 31 is an L-shaped steel plate, with one leg 32 screwed to the engine compartment lid, and with the other leg 35 screwed to the rear wall of the passenger compartment. Vis-a-vis the support brackets 31, the positions of the support brackets 17 are selected in a way that projected to the floor plane (horizontal plane) of the body, each suspension bar 20 includes an angle of approximately 15 degrees with the cross section plane of the body.
• the transmission unit 2 and the engine support frame 7, respectively, are clamped in the vicinity of the rear transversal support 12 - through the support brackets 36 welded to the beams 10 - to the engine compartment front wall and floor of the body, because L-shaped support brackets are screwed to them.
• Fixed by the bolts 25, the bearing surface 24 at the end 23 of the pin 22 of each rubber joint 21 is held by the horizontal support surface 37 of the support bracket 36.
• the rubber joint 21 has a pin 38, which is embedded in the bushing 39 of the support bracket 36. At the end of the pin 38, the axial clearance is limited by the washer 40 and an axle nut.
• the transmission suspension unit 1 is suspended in the body in a very favorable way from the aspect of vibration load, because the transmission unit 2 is flexibly supported in the transmission frame 7, and the latter is suspended in the body by the rubber joints 21.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Body Structure For Vehicles (AREA)
• Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
• Vehicle Body Suspensions (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=89980544

Family Applications (1)

Country Status (4)

Cited By (2)

Families Citing this family (4)

Citations (3)

Family Cites Families (4)

• 2002
  • 2002-06-21 HU HU0202045A patent/HU225484B1/hu not_active IP Right Cessation
• 2003
  • 2003-06-19 WO PCT/HU2003/000047 patent/WO2004000594A1/en not_active Ceased
  • 2003-06-19 AU AU2003244884A patent/AU2003244884A1/en not_active Abandoned
  • 2003-06-19 US US10/519,178 patent/US7334659B2/en not_active Expired - Fee Related

Patent Citations (3)

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