SE7714036A - CONTROL SYSTEM FOR A HYDROSTATIC DRIVE - Google Patents

CONTROL SYSTEM FOR A HYDROSTATIC DRIVE

Info

Publication number
SE7714036A
SE7714036A SE7714036A SE7714036A SE7714036A SE 7714036 A SE7714036 A SE 7714036A SE 7714036 A SE7714036 A SE 7714036A SE 7714036 A SE7714036 A SE 7714036A SE 7714036 A SE7714036 A SE 7714036A
Authority
SE
Sweden
Prior art keywords
engine
horsepower
ratio control
control valve
valve
Prior art date
Application number
SE7714036A
Other languages
Swedish (sv)
Other versions
SE439905B (en
Inventor
F W Pollman
D W Reynolds
W A Ross
G A Schauer
Original Assignee
Sundstrand Corp
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 Sundstrand Corp filed Critical Sundstrand Corp
Publication of SE7714036A publication Critical patent/SE7714036A/en
Publication of SE439905B publication Critical patent/SE439905B/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control 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
    • F16H61/38Control of exclusively fluid gearing
    • F16H61/40Control of exclusively fluid gearing hydrostatic
    • F16H61/4157Control of braking, e.g. preventing pump over-speeding when motor acts as a pump
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D29/00Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F02D29/02Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control 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
    • F16H61/38Control of exclusively fluid gearing
    • F16H61/40Control of exclusively fluid gearing hydrostatic
    • F16H61/46Automatic regulation in accordance with output requirements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control 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
    • F16H61/38Control of exclusively fluid gearing
    • F16H61/40Control of exclusively fluid gearing hydrostatic
    • F16H61/46Automatic regulation in accordance with output requirements
    • F16H61/465Automatic regulation in accordance with output requirements for achieving a target input speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT 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
    • B60W30/00Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18Propelling the vehicle
    • B60W30/18009Propelling the vehicle related to particular drive situations
    • B60W30/18109Braking
    • B60W30/18136Engine braking
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00Engines characterised by fuel-air mixture compression
    • F02B1/02Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H59/00Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/14Inputs being a function of torque or torque demand
    • F16H59/18Inputs being a function of torque or torque demand dependent on the position of the accelerator pedal
    • F16H2059/186Coasting

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Fluid Gearings (AREA)
  • Control Of Transmission Device (AREA)
  • Motor Power Transmission Devices (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

A transmission ratio control system including an engine having fuel supply means for controlling engine horsepower, a hydrostatic transmission driven by the engine including means for varying transmission ratio, a ratio control valve for controlling the ratio varying means, means for applying a bias to the ratio control valve proportional to engine speed, and means for applying an opposing fluid bias to the ratio control valve proportional to engine horsepower. In operation, the fuel supply means calls for a predetermined engine horsepower, and the transmission ratio is varied to provide a predetermined speed corresponding to minimum fuel consumption. Alternative to the horsepower signal supplied to the ratio control valve, a brake valve is provided to utilize the engine for vehicle braking. In conjunction with the brake valve, a switching valve disables the horsepower signal when the brake valve is employed.
SE7714036A 1973-04-19 1977-12-09 HYDRAULIC CONTROL SYSTEM SE439905B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00352660A US3855793A (en) 1973-04-19 1973-04-19 Transmission ratio control system

Publications (2)

Publication Number Publication Date
SE7714036A true SE7714036A (en) 1978-12-09
SE439905B SE439905B (en) 1985-07-08

Family

ID=23385979

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7714036A SE439905B (en) 1973-04-19 1977-12-09 HYDRAULIC CONTROL SYSTEM

Country Status (8)

Country Link
US (1) US3855793A (en)
JP (1) JPS5629145B2 (en)
CA (1) CA994210A (en)
DE (1) DE2417328A1 (en)
FR (1) FR2226562B1 (en)
GB (2) GB1465092A (en)
IT (1) IT1011235B (en)
SE (1) SE439905B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023442A (en) * 1973-08-16 1977-05-17 Oklahoma State University Automatic control means for infinitely variable transmission
JPS5623066B2 (en) * 1973-09-05 1981-05-28
US3969896A (en) * 1975-05-08 1976-07-20 Sundstrand Corporation Transmission ratio control system
US4109772A (en) * 1975-10-17 1978-08-29 Deere & Company Vehicular single shaft gas turbine engine power system
JPS52105433A (en) * 1976-03-02 1977-09-03 Honda Motor Co Ltd Automatic control system for hydraulically-operated continuous speed c hange unit for use in vehicle
JPS5365563A (en) * 1976-11-24 1978-06-12 Honda Motor Co Ltd Automatic controlling device for hydraulic stageless transmission gear forvehicles
US4102131A (en) * 1977-05-05 1978-07-25 Sundstrand Corporation Integrated transmission-engine control
US4246806A (en) * 1978-01-16 1981-01-27 Sundstrand Corporation Multi-mode hydromechanical transmission shift system
US4232572A (en) * 1978-07-17 1980-11-11 Sundstrand Corporation Engine-transmission control system
DE102004049001A1 (en) * 2004-10-06 2006-04-13 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Circular knitting machine with a dedusting device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3139723A (en) * 1962-02-26 1964-07-07 Fairchild Stratos Corp Control system for infinitely variable automatic transmission
DE1255389B (en) * 1963-07-25 1967-11-30 Bosch Gmbh Robert Control device for a hydrostatic vehicle drive driven by an internal combustion engine
US3184913A (en) * 1963-11-18 1965-05-25 Ford Motor Co Control system for infinitely variable power transmission mechanism
US3442153A (en) * 1967-05-08 1969-05-06 Sundstrand Corp Hydrostatic transmission
US3583154A (en) * 1969-10-03 1971-06-08 Gen Motors Corp Dual throttle drive ratio control for a power transmission

Also Published As

Publication number Publication date
GB1465092A (en) 1977-02-23
FR2226562B1 (en) 1978-09-08
GB1465091A (en) 1977-02-23
FR2226562A1 (en) 1974-11-15
CA994210A (en) 1976-08-03
US3855793A (en) 1974-12-24
DE2417328A1 (en) 1974-11-07
JPS5629145B2 (en) 1981-07-06
SE439905B (en) 1985-07-08
JPS50269A (en) 1975-01-06
IT1011235B (en) 1977-01-20

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