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GB1484388A - Vehicle having a hydrostatic and a mechanical drive - Google Patents

Vehicle having a hydrostatic and a mechanical drive

Info

Publication number
GB1484388A
GB1484388A GB961/75A GB96175A GB1484388A GB 1484388 A GB1484388 A GB 1484388A GB 961/75 A GB961/75 A GB 961/75A GB 96175 A GB96175 A GB 96175A GB 1484388 A GB1484388 A GB 1484388A
Authority
GB
United Kingdom
Prior art keywords
lever
hydrostatic transmission
transmission
control
pump
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.)
Expired
Application number
GB961/75A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1484388A publication Critical patent/GB1484388A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/46—Automatic regulation in accordance with output requirements
    • 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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/356—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having fluid or electric motor, for driving one or more wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B60W10/101—Infinitely variable gearings
    • B60W10/103—Infinitely variable gearings of fluid type
    • 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
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/46—Automatic regulation in accordance with output requirements
    • F16H61/472—Automatic regulation in accordance with output requirements for achieving a target output torque
    • 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
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
    • F16H2061/6604—Special control features generally applicable to continuously variable gearings
    • F16H2061/6615—Imitating a stepped transmissions
    • F16H2061/6616—Imitating a stepped transmissions the shifting of the transmission being manually controlled

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Control Of Fluid Gearings (AREA)
  • Motor Power Transmission Devices (AREA)
  • Control Of Transmission Device (AREA)

Abstract

1484388 Hydrostatic transmission control ROBERT BOSCH GmbH 9 Jan 1975 [12 Jan 1974] 961/75 Heading F2W [Also in Division B7] In a vehicle a hydrostatic transmission having a variable pump 14 and a motor 17 drives one axle and a mechanical transmission having a change-speed gear-box 11 drives the other, an internal combustion engine 10 driving both transmissions, the pump 14 being adjustable step-wise by a lever 32 with changes in the change-speed gear 11. The positions of lever 32 corresponding to the ratios of gear are defined by recesses I to V (four forward ratios and one reverse) engageable by a catch. During gear changing a clutch pedal 25 is depressed to release a clutch in the mechanical drive and open a by-pass valve 22 in the hydrostatic transmission. In the embodiment shown in Fig. 1 the set positions I to V of the lever 32 are adjustable by a bolt 33 but there may instead be automatic adjustment by a piston and cylinder device acting on the bottom of the lever against a spring (Fig. 1a, not shown) in response to the pressure in the hydrostatic transmission. In a further embodiment (Fig. 2, not shown) an electronic control unit (55) receives measurements of engine torque (from an injector control rod) pump displacement, hydrostatic transmission pressure and also receives a signal indicating the selected gear ratio. The pump displacement is adjusted by this control in response to a desired value of the ratio of the peripheral force at the front wheels (driven by the hydrostatic transmission) to the total peripheral force at the wheels, which value is supplied to the control by the operator. In the embodiment of Fig. 1 the mechanical transmission may be put in neutral and the vehicle driven hydraulically with the lever 32 used to vary the pump 14 continuously. A device may be provided to prevent the bypass valve 22 being closed by release of pedal 25 unless both transmissions have been adjusted. In the embodiment of Fig. 2, the electrical controller may also control transmission ratio in response to the pressure in an hydraulic brake.
GB961/75A 1974-01-12 1975-01-09 Vehicle having a hydrostatic and a mechanical drive Expired GB1484388A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2401419A DE2401419A1 (en) 1974-01-12 1974-01-12 VEHICLE WITH A HYDROSTATIC AND MECHANICAL DRIVE

Publications (1)

Publication Number Publication Date
GB1484388A true GB1484388A (en) 1977-09-01

Family

ID=5904669

Family Applications (1)

Application Number Title Priority Date Filing Date
GB961/75A Expired GB1484388A (en) 1974-01-12 1975-01-09 Vehicle having a hydrostatic and a mechanical drive

Country Status (4)

Country Link
JP (1) JPS50100730A (en)
DE (1) DE2401419A1 (en)
FR (1) FR2257454B3 (en)
GB (1) GB1484388A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7968120B2 (en) 2001-09-28 2011-06-28 Mcneil-Ppc, Inc. Modified release dosage forms

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2541202A1 (en) * 1983-02-18 1984-08-24 Seram Car conversion system - comprises hydraulic circuit driving motors which are connected to wheels via detachable transmission links
FR2558788B1 (en) * 1984-01-30 1987-10-16 Bobard Jeune Sa Ets STEPPER TRACTOR WITH HYDRAULICALLY ASSISTED FRONT WHEELS
DE3820717A1 (en) * 1988-06-18 1990-02-08 Goldhofer Fahrzeugwerk METHOD FOR CONTROLLING THE SPEED OF ONE OR MORE DRIVE WHEEL SETS OF A VEHICLE EQUIPPED WITH A HYDROSTATIC DRIVE, AND DEVICE FOR CARRYING OUT THIS METHOD
DE3842405A1 (en) * 1988-12-16 1990-06-28 Orenstein & Koppel Ag METHOD FOR ADDITIONAL HYDRAULIC DRIVE OF WHEELS ON A VEHICLE
DE102011118111A1 (en) 2011-11-09 2012-05-24 Daimler Ag Drivetrain for driving internal combustion engine of lorry, has hydraulic pump conveying hydraulic medium and driven by axle differential, which includes plate wheel for introducing rotational torque of drive motor into axle differential

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7968120B2 (en) 2001-09-28 2011-06-28 Mcneil-Ppc, Inc. Modified release dosage forms

Also Published As

Publication number Publication date
DE2401419A1 (en) 1975-07-17
JPS50100730A (en) 1975-08-09
FR2257454A1 (en) 1975-08-08
FR2257454B3 (en) 1977-09-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee