GB1273540A - A control system for an engine - Google Patents

A control system for an engine

Info

Publication number
GB1273540A
GB1273540A GB3535568A GB3535568A GB1273540A GB 1273540 A GB1273540 A GB 1273540A GB 3535568 A GB3535568 A GB 3535568A GB 3535568 A GB3535568 A GB 3535568A GB 1273540 A GB1273540 A GB 1273540A
Authority
GB
United Kingdom
Prior art keywords
pump
engine
valve
displacement
engine speed
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
GB3535568A
Inventor
Bertram Carl Kempson
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.)
Dowty Hydraulic Units Ltd
Original Assignee
Dowty Hydraulic Units Ltd
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 Dowty Hydraulic Units Ltd filed Critical Dowty Hydraulic Units Ltd
Publication of GB1273540A publication Critical patent/GB1273540A/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
    • F16H61/465—Automatic regulation in accordance with output requirements for achieving a target input speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection 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
    • 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
    • F16H61/664—Friction gearings
    • F16H61/6648—Friction gearings controlling of shifting being influenced by a signal derived from the engine and the main coupling
    • 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
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2700/00—Mechanical control of speed or power of a single cylinder piston engine
    • F02D2700/02—Controlling by changing the air or fuel supply
    • F02D2700/0269—Controlling by changing the air or fuel supply for air compressing engines with compression ignition
    • F02D2700/0282—Control of fuel supply
    • F02D2700/0284—Control of fuel supply by acting on the fuel pump control element
    • F02D2700/0292—Control of fuel supply by acting on the fuel pump control element depending on the speed of a centrifugal governor
    • 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
    • F16H59/36—Inputs being a function of speed
    • F16H2059/366—Engine or motor speed

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)

Abstract

1,273,540. Variable speed control. DOWTY HYDRAULIC UNITS Ltd. 12 June, 1969 [14 June, 1968; 24 July, 1968], Nos. 28469/68 and 35355/68. Heading F2D. [Also in Divisions G2-G3] A control system for a fuel injection engine and a variable ratio transmission comprises an engine driven centrifugal governor 44 which acts on a fuel control lever 2 to increase fuel flow to the engine when the engine speed decreases and thus tends to maintain engine speed within a predetermined range, and additionally acts on a valve 16 to reduce the transmission ratio when engine speed falls below a selected speed within or below the predetermined range. The governor 44 is loaded by a spring 62 connected to a lever 58 which adjusts the spring load to vary the engine speed range. As shown the variable ratio transmission comprises a variable displacement pump 4 supplying pressure liquid to an hydraulic motor or hydraulic ram. The pump displacement is varied by an hydraulic servomotor 6 loaded by a spring 9 towards a pump minimum displacement position. The pump displacement is increased by pressure liquid supplied to the servomotor 6 from an engine driven pump through a restrictor 15 at a pressure determined by the variable throttle valve 16 controlled by the governor 44. An additional valve 69 reduces the pressure of the liquid supply to the servo motor 6 and thus the pump displacement when the pump delivery pressure exceeds a predetermined value. A by-pass valve 18 in parallel with the throttle valve 16 is opened to reduce pump displacement to a minimum during starting. Operation.-When the engine speed is above the selected value the throttle valve 16 is closed and the pump 4 operates at maximum displacement, whilst the governor 44 acts on the lever 2 to increase fuel supply to the engine when the engine speed decreases and vice versa. As the engine speed falls below the selected value the throttle valve 16 is progressively opened to reduce the pressure supply to the servo motor 6 and thus reduce pump displacement. When the engine speed is below the predetermined range the engine works at maximum fuel injection. If the pump delivery pressure exceeds a predetermined value the pressure acts on a plunger 72 of the valve 69 to move left a valve spool 74 and reduce the pressure supply to the servo motor 6 whereupon the pump displacement and thus the pump delivery pressure are reduced. In Fig. 5 (not shown) the pump displacement is adjusted by a spring centred double acting servo motor (81) and a forward-reverse valve (93) is interposed in the line (13) between the throttle valve (16) and the servo motor (81). In addition to the governor control of the throttle valve control lever (34) the lever is connected through a lost motion connection (101) to a lever 98 which may override the automatic control and open the throttle valve 16 to provide hydrostatic braking. The hydrostatic transmission may be replaced by a steplessly variable friction gear. Reference has been directed by the Comptroller to Specification 1,035,821.
GB3535568A 1968-06-14 1968-06-14 A control system for an engine Expired GB1273540A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2846968 1968-06-14

Publications (1)

Publication Number Publication Date
GB1273540A true GB1273540A (en) 1972-05-10

Family

ID=10276138

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3535568A Expired GB1273540A (en) 1968-06-14 1968-06-14 A control system for an engine

Country Status (1)

Country Link
GB (1) GB1273540A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4312633A (en) 1978-12-22 1982-01-26 Asahi-Dow Limited Method for recovering 1,1,1-trichloroethane from textile materials
FR2550841A1 (en) * 1983-07-26 1985-02-22 Linde Ag CONTROL DEVICE FOR A DRIVE COMPRISING A ROTARY DRAWER WITH TWO STRIPPING POINTS FOR ADJUSTING THE CONTROL PRESSURE
WO2005121628A1 (en) * 2004-06-12 2005-12-22 Siemens Aktiengesellschaft A hydraulic restrictor
CN101349201B (en) * 2007-07-18 2011-06-08 颜丙仁 Machine external apparatus for maintaining multi-cylinder engine high-efficiency operation

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4312633A (en) 1978-12-22 1982-01-26 Asahi-Dow Limited Method for recovering 1,1,1-trichloroethane from textile materials
FR2550841A1 (en) * 1983-07-26 1985-02-22 Linde Ag CONTROL DEVICE FOR A DRIVE COMPRISING A ROTARY DRAWER WITH TWO STRIPPING POINTS FOR ADJUSTING THE CONTROL PRESSURE
GB2144242A (en) * 1983-07-26 1985-02-27 Linde Ag A machine control arrangement
WO2005121628A1 (en) * 2004-06-12 2005-12-22 Siemens Aktiengesellschaft A hydraulic restrictor
US7770600B2 (en) 2004-06-12 2010-08-10 Siemens Aktiengesellschaft Hydraulic restrictor
CN101349201B (en) * 2007-07-18 2011-06-08 颜丙仁 Machine external apparatus for maintaining multi-cylinder engine high-efficiency operation

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Legal Events

Date Code Title Description
PS Patent sealed