SE7714036A - CONTROL SYSTEM FOR A HYDROSTATIC DRIVE - Google Patents
CONTROL SYSTEM FOR A HYDROSTATIC DRIVEInfo
- 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
Links
- 230000002706 hydrostatic effect Effects 0.000 title abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 4
- 239000000446 fuel Substances 0.000 abstract 3
- 239000012530 fluid Substances 0.000 abstract 1
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
- F16H61/4157—Control of braking, e.g. preventing pump over-speeding when motor acts as a pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling 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
- F02D29/02—Controlling 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
-
- 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
-
- 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
- F16H61/465—Automatic regulation in accordance with output requirements for achieving a target input speed
-
- 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
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
-
- 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
- B60W30/00—Purposes 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
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18109—Braking
- B60W30/18136—Engine braking
-
- 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
- F02B1/00—Engines characterised by fuel-air mixture compression
- F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
- F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
-
- 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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
- F16H59/18—Inputs being a function of torque or torque demand dependent on the position of the accelerator pedal
- F16H2059/186—Coasting
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.
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)
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)
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 |
-
1973
- 1973-04-19 US US00352660A patent/US3855793A/en not_active Expired - Lifetime
- 1973-12-06 JP JP13577473A patent/JPS5629145B2/ja not_active Expired
-
1974
- 1974-01-03 CA CA189,383A patent/CA994210A/en not_active Expired
- 1974-01-04 FR FR7400280A patent/FR2226562B1/fr not_active Expired
- 1974-03-20 GB GB3812376A patent/GB1465092A/en not_active Expired
- 1974-03-20 GB GB1224374A patent/GB1465091A/en not_active Expired
- 1974-04-09 DE DE2417328A patent/DE2417328A1/en not_active Ceased
- 1974-04-11 IT IT50317/74A patent/IT1011235B/en active
-
1977
- 1977-12-09 SE SE7714036A patent/SE439905B/en not_active IP Right Cessation
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
Ref document number: 7714036-6 Effective date: 19910117 Format of ref document f/p: F |