EP0067046A2 - Vorrichtung zur Begrenzung der Höchstdrehzahl - Google Patents

Vorrichtung zur Begrenzung der Höchstdrehzahl Download PDF

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Publication number
EP0067046A2
EP0067046A2 EP82302877A EP82302877A EP0067046A2 EP 0067046 A2 EP0067046 A2 EP 0067046A2 EP 82302877 A EP82302877 A EP 82302877A EP 82302877 A EP82302877 A EP 82302877A EP 0067046 A2 EP0067046 A2 EP 0067046A2
Authority
EP
European Patent Office
Prior art keywords
cable
engine
throttle
control device
output
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.)
Withdrawn
Application number
EP82302877A
Other languages
English (en)
French (fr)
Other versions
EP0067046A3 (de
Inventor
Roger Harrison
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.)
Kysor Industrial Great Britain Ltd
Original Assignee
Kysor Industrial Great Britain 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 Kysor Industrial Great Britain Ltd filed Critical Kysor Industrial Great Britain Ltd
Publication of EP0067046A2 publication Critical patent/EP0067046A2/de
Publication of EP0067046A3 publication Critical patent/EP0067046A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
    • F02D17/04—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling rendering engines inoperative or idling, e.g. caused by abnormal conditions

Definitions

  • the present invention relates to a maximum speed control device, for limiting the top speed of an internal combustion engine.
  • a maximum speed control device for limiting the top speed of an internal combustion engine, comprising means for supplying fuel to the engine, a throttle control linked to the fuel supply means by a cable, means for monitoring the speed of the engine, means for providing an output when the speed of the engine exceeds a predetermined limit, and means for automatically reducing the supply of fuel to the engine in response to said output, characterised in that said means for automatically reducing the supply of fuel to the engine comprises means for increasing the effective length of the throttle cable in response to said output, thereby reducing the supply of fuel, until such time as the engine speed falls below the said predetermind limit and said output ceases.
  • Preferably increasing the effective length of the throttle cable makes the throttle control non-effective on the carburettor and allows the carburettor to return to its closed position.
  • the throttle cable comprises a portion there of which during normal engine operation is held taut by said means for increasing the effective length of the throttle cable, but which when the engine exceeds the said predetermined limit is slackened by said means for increasing the effective length of the throttle cable.
  • the supply of fuel is reduced until such time as the engine speed falls below a further predetermined limit set below the said predetermined limit, at which further predetermined limit said output ceases.
  • the means for increasing the effective length of the throttle cable comprises an outer cable disposed over said portion of the throttle cable and through which the throttle cable is movable, one end of the outer cable being fixed in position and the other end being movable back and forth along the throttle cable to tension or slacken the throttle cable.
  • the said movable end of the outer cable is attached to a plate which is movable in response to said output.
  • the plate may be held in position by a cam which is rotated in response to said output, thereby moving the plate.
  • the plate may be attached to the outer cable of a control cable, the inner cable of which is movable through the outer cable of the control cable and which is shortened in response to said output, thereby causing the said outer cable of the control cable to move over the inner cable, moving the plate with it.
  • the means responsive to said output comprises a vacuum solenoid valve which vacuum solenoid valve supplies a vacuum to a vacuum actuated device which device actuates the plate moving means.
  • the vacuum is derived from the engine manifold.
  • a sensor 1 which produces pulses at a rate proportional to the rate of rotation of the drive shaft 2 of a vehicle (not shown).
  • the pulses are input to an electronic timing device 3, of the type described in Published British Patent Application No: 2,045,475 which monitors the rate of pulses and produces an output when the rate thereof exceeds a reference rate held in the timing device 3. Since the rate of rotation of the drive shaft 2 is proportional to the speed of the vehicle, the timing device 3 produces an output only when the speed of the vehicle exceeds a predetermined limit as set by the reference rate. Since the sensor 1 and timing device 2 are known from Published British Patent Application No. 2,045,475 a detailed description thereof is not given here.
  • the output of the timing device ? is used to operate a solenoid valve 4 which controls the application of a vacuum to a vacuum actuated device 5.
  • the vacuum is drawn from the engine manifold 6 and stored in a vacuum reservoir 7 for use during periods of reduced vacuum.
  • a check valve 8 prevents the vacuum being lost back to the manifold 6.
  • the solenoid valve 4 comprises a solenoid 9, the operation of which needs no explanation, and a valve 10, which is switched, by the solenoid from an "exhaust" position to an "in” position, when the speed of the vehicle exceeds the predetermined limit. When switched the valve 10 applies the vacuum in the vacuum reservoir 7 to the vacuum actuated device 5.
  • the vacuum actuated device 5 comprises a movable member 11 which is attached to the inner cable 12 of a control cable 13.
  • the inner cable 12 is fixed in position at its other end from the device 5 to, for example, the body of the engine indicated at 14.
  • An outer cable 15 is located over the inner cable 12 which is movable through the outer cable 15.
  • the outer cable 15 is held in position at its end adjacent the device 5 and is shorter than the inner cable 12 so that it exposes a portion thereof at its other end from the device 5, which end is attached to a plate 16.
  • a certain degree of slack is provided in the control cable 13 as indicated by the U shaped portion thereof.
  • the vacuum actuated device 5 When a vacuum is applied to the vacuum actuated device 5, as a result of the speed of the vehicle exceeding the predetermined limit, the vacuum actuated device 5 causes the movable member 11 to pull on the inner cable 12 of the control cable 13. This has the-effect of taking up the slack in the -inner cable 12 of the control cable 13, that is shortening its effective length However it does not take up any of the slack in the outer cable 15, which as a result of the decreases in the effective length of the inner cable 12 therethrough moves over the exposed portion of the inner cable 12.
  • the plate 16 Since the outer cable 15 is attached to the plate 16, the plate 16 is caused to move when the outer cable does so.
  • the outer cable 17 of the vehicle throttle cable 18 is also attached to the plate 16 .
  • the other end of the outer cable 17 is fixed in position.
  • the inner cable 19 of the throttle cable is movable through the throttle outer cable 17 and is attached at one end to the accelerator pedal 20 of the vehicle and at the other end to the carburettor 21 of the vehicle through a chain 22.
  • a spring 23 fixed at one end and attached at its other end to the carburettor 21 pulls the carburettor 21 to the closed position and the accelerator pedal 20, through the throttle inner cable 19, to the idle position. Pushing down on the accelerator pedal 20 against the spring 23 opens the carburettor 21.
  • the length of the throttle inner cable 19 such as to provide a degree of slack therein between carburettor 21 and the accelerator pedal 23, however this slack is taken up by the throttle outer cable 17.
  • the plate 16 is pushed on the end of a rod 24 by a spring 25 towards the fixed end of the throttle outer cable 17, thus decreasing the effective length of the throttle inner cable between the plate 16 and the fixed end of the throttle outer cable 17, thus keeping the throttle inner cable 19 taut.
  • the plate 16 is moved away from the fixed end of the throttle outer cable, as described hereinabove, slackening the throttle inner cable 19.
  • the carburettor 22 is pulled back to the closed position by the spring 23 and the accelerator pedal 20 goes down to the floor of the car. In this way power from the engine is lost and the driver is reminded that he is exceeding the speed limit set for the vehicle.
  • Fig. 2 there is shown an alternative carburettor shut down mechanism to the mechanism of Fig. 1. Only the mechanism itself is shown, the mechanism actuating apparatus being identical to that of Fig. 1 up to the vacuum actuated device.
  • the vacuum actuated device 5 pulls on the inner cable 26 of a control cable 27.
  • the inner cable 26 is attached to an actuator cam 28 which is pivotal about a point 29.
  • the position of the cam 28 about its pivotal point 29 determines the position of a plate 30 which is attached to the outer cable 31 of the vehicle throttle cable 32.
  • the plate 30 moves changing the position of the throttle outer cable 32.
  • adjusting the position of the throttle outer cable 32 increases or decreases the amount of slack in the throttle inner cable 33 thereby allowing a carburettor return spring 34 to return the carburettor 35 to its closed position or the accelerator pedal (not shown) to open the carburettor 35.
  • Fig. 2 when the inner cable 26 pulls on the cam 28-the plate 30 moves and increases the slack in the throttle inner cable 33.
  • the means for operating the carburettor shut down mechanism need not be only vacuum operated.
  • the output of the timing device may be used to operate an electrically operated actuating device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
EP82302877A 1981-06-06 1982-06-03 Vorrichtung zur Begrenzung der Höchstdrehzahl Withdrawn EP0067046A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8117389 1981-06-06
GB8117389A GB2099916A (en) 1981-06-06 1981-06-06 Cable operated carburettor control with maximum vehicle speed limitation

Publications (2)

Publication Number Publication Date
EP0067046A2 true EP0067046A2 (de) 1982-12-15
EP0067046A3 EP0067046A3 (de) 1983-04-13

Family

ID=10522320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82302877A Withdrawn EP0067046A3 (de) 1981-06-06 1982-06-03 Vorrichtung zur Begrenzung der Höchstdrehzahl

Country Status (3)

Country Link
EP (1) EP0067046A3 (de)
GB (1) GB2099916A (de)
ZA (1) ZA823943B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1566320A1 (de) * 2004-02-18 2005-08-24 Maurizio Walter Parisch Flexibler Vakuumspeicher und Verbindungselement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2210664B (en) * 1987-10-07 1991-11-13 Automotive Products Plc Fuel supply control

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2313000A (en) * 1938-06-18 1943-03-02 Hauguel Robert Device for the control of the fuel supply of engines
US2671542A (en) * 1951-03-13 1954-03-09 Auto Cruz Corp Speed control mechanism for engines
BE629980A (de) * 1962-03-29
CH529637A (de) * 1971-02-25 1972-10-31 Scheu Jakob Einrichtung zur automatischen Geschwindigkeitsbegrenzung von Motorfahrzeugen
FR2242567A1 (en) * 1973-09-04 1975-03-28 Wernette Dominique Speed limiter esp. for road vehicles - restricts throttle opening without affecting full accelerator pedal travel
GB1519960A (en) * 1975-11-24 1978-08-02 Chrysler Uk Induction systems for motor vehicle internal combustion engines
GB1549178A (en) * 1976-05-20 1979-08-01 Tanner Electronic Syst Tech Throttle control apparatus
GB1583548A (en) * 1977-08-22 1981-01-28 Lucas Industries Ltd Coupling device for a fuel control mechanism
DK116680A (da) * 1979-03-19 1980-09-20 Fidus Controls Ltd Koeretoej med udstyr til kraftudtag

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1566320A1 (de) * 2004-02-18 2005-08-24 Maurizio Walter Parisch Flexibler Vakuumspeicher und Verbindungselement

Also Published As

Publication number Publication date
ZA823943B (en) 1983-04-27
GB2099916A (en) 1982-12-15
EP0067046A3 (de) 1983-04-13

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PUAL Search report despatched

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18D Application deemed to be withdrawn

Effective date: 19831214

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HARRISON, ROGER