EP0012450A1 - Dispositif pour éviter la survitesse dans un moteur à injection de carburant - Google Patents

Dispositif pour éviter la survitesse dans un moteur à injection de carburant Download PDF

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Publication number
EP0012450A1
EP0012450A1 EP79105251A EP79105251A EP0012450A1 EP 0012450 A1 EP0012450 A1 EP 0012450A1 EP 79105251 A EP79105251 A EP 79105251A EP 79105251 A EP79105251 A EP 79105251A EP 0012450 A1 EP0012450 A1 EP 0012450A1
Authority
EP
European Patent Office
Prior art keywords
supply line
flap
engine
lever
air
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.)
Granted
Application number
EP79105251A
Other languages
German (de)
English (en)
Other versions
EP0012450B1 (fr
Inventor
Roman Mieczyslaw Dr. Ing.-Mech. Blocki
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.)
Wytwornia Silnikow Wysokopreznych "PZL-Andrychow"
WYTWORNIA SILNIKOW WYSOKOPREZN
Original Assignee
Wytwornia Silnikow Wysokopreznych "PZL-Andrychow"
WYTWORNIA SILNIKOW WYSOKOPREZN
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
Priority claimed from PL21187278A external-priority patent/PL120909B1/pl
Priority claimed from PL21845579A external-priority patent/PL124148B3/pl
Application filed by Wytwornia Silnikow Wysokopreznych "PZL-Andrychow", WYTWORNIA SILNIKOW WYSOKOPREZN filed Critical Wytwornia Silnikow Wysokopreznych "PZL-Andrychow"
Priority to AT79105251T priority Critical patent/ATE3664T1/de
Publication of EP0012450A1 publication Critical patent/EP0012450A1/fr
Application granted granted Critical
Publication of EP0012450B1 publication Critical patent/EP0012450B1/fr
Expired 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 invention relates to a device for securing a fuel injection internal combustion engine before running away or overturning.
  • PL-PS 60 919 for example, a solution is known in which, using a system of lines and valves, the pump in the fuel supply line which supplies the fuel to the engine for sucking off the fuel located in the supply and overflow lines of the injection pumps is exploited.
  • PL-PS 85 421 a safety device is also known, which is designed for use with injection pumps with reciprocating pistons provided engines.
  • the piston is separated from its tappet by a slidably movable lower plate, which forms two separate, closed chambers in the pump housing, one of which contains the piston and the other contains the tappet.
  • This device is equipped with a system which, when the maximum permissible speed of the engine is reached, enables the compressed gas to be supplied to the second chamber, under a pressure which results in the displacement and separation of the lower plate and thus also the piston from the plunger, as a result of which the Injection pump is stopped.
  • a disadvantage of the two solutions described above is that the devices have to receive an external pulse to operate them, e.g. from a device detecting the maximum permissible speed.
  • the second solution described above also has the disadvantages that the device is to be equipped with a pressurized gas source and has a limited area of application, because it is intended exclusively for engines provided with reciprocating pistons for injection pumps and is unsuitable for engines equipped with distributor injection pumps.
  • the object of the invention is to develop a device for securing a fuel injection internal combustion engine against over-revving, which works on a different principle than the known solutions and does not have the disadvantages mentioned above.
  • the device according to the invention protects the internal combustion engine equipped therewith from running away, for example in the event of damage to the speed controller or the injection pump, whereby it causes the supply of air to the cylinders of the engine after the maximum permissible speed of the engine has been reached Engine shut off.
  • the device according to the invention does not have the above-mentioned disadvantages of the known solutions and is also simple and therefore inexpensive and reliable in operation.
  • a shut-off device is arranged in the air supply line 1 of the engine, specifically in the form of a pivotable flap 2, which is placed on a shaft 3 mounted in bores formed in the walls of the supply line.
  • the shaft 3 runs vertically and at a certain distance from the axis of the feed line 1.
  • a lever 4 connected to a tension spring 5 is also mounted on the shaft 3.
  • the feed line 1 is provided with a constriction, the surface perpendicular to the axis of the feed line 1 forming a support surface 6 for the flap 2.
  • the flap 2 under the action of the tension spring 5 and a stop 7, against which the lever 4 is supported, is arranged at an angle ⁇ to the axis of the feed line 1, it being advantageous if the angle ⁇ is as possible is small in order to keep the air flow resistances in the supply line 1 of the engine as low as possible.
  • the variant of the safety device according to the invention shown in FIG. 3 is equipped with a pneumatic cylinder in the form of a bellows 8, the interior of which is connected to the supply line 1 via the line 10 of the engine is connected. Furthermore, one bottom of the bellows 8 is connected to the lever 4 of the flap 2 by means of a plunger 9, while the other bottom of the bellows 8 is arranged in a stationary manner.
  • a pneumatic cylinder of a different type can of course be used, such as a piston or membrane cylinder.
  • the bellows 8 filled with the air feeding the motor exerts a certain force on the lever-4.
  • the magnitude of this force depends on the pressure and thus also on the density of the supply air, which is variable in a loading motor.
  • the bellows 8 is connected to the lever 4 in such a way that the direction of action of the torque caused by the force exerted by the bellows 8 on the lever 4 corresponds to the direction of action of the torque caused by the force exerted by the tension spring 5 on the lever 4.
  • the bellows 8 is designed so that at the maximum permissible speed of the engine, the summary of the torque coming from the bellows 8 and the tension spring 5 on the lever 4 by the dynamic pressure of the air on the flap 2 regardless of the air density in the torque caused by the feed line 1 of the motor is approximately the same. This compensates for the influence of the density of the air feeding the engine.
  • FIG. 3 The operation of the embodiment of FIG. 3 is otherwise the same as the safety device shown in FIGS. 1 and 2.
  • the device according to the invention can be used both for engines during tests on an engine test bench and for engines working in vehicles and work machines.
EP79105251A 1978-12-18 1979-12-18 Dispositif pour éviter la survitesse dans un moteur à injection de carburant Expired EP0012450B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79105251T ATE3664T1 (de) 1978-12-18 1979-12-18 Vorrichtung zur sicherung eines kraftstoffeinspritz-verbrennungsmotors vor einem ueberdrehen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
PL21187278A PL120909B1 (en) 1978-12-18 1978-12-18 Apparatus protecting an injection-type internal compustion engine against overspeedingja s vpryskom topliva ot raznosa
PL211872 1978-12-18
PL218455 1979-09-22
PL21845579A PL124148B3 (en) 1979-09-22 1979-09-22 Apparatus for protecting an injected fuel internal combustion engine against overspeeding

Publications (2)

Publication Number Publication Date
EP0012450A1 true EP0012450A1 (fr) 1980-06-25
EP0012450B1 EP0012450B1 (fr) 1983-06-01

Family

ID=26652909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79105251A Expired EP0012450B1 (fr) 1978-12-18 1979-12-18 Dispositif pour éviter la survitesse dans un moteur à injection de carburant

Country Status (3)

Country Link
US (1) US4323040A (fr)
EP (1) EP0012450B1 (fr)
DE (1) DE2965596D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5056482A (en) * 1989-12-01 1991-10-15 Fuji Heavy Industries Ltd. Engine protecting system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3406119A1 (de) * 1984-02-21 1985-08-22 Fa. Andreas Stihl, 7050 Waiblingen Zweitaktmotor
DE3509540A1 (de) * 1985-03-16 1986-09-18 Fa. Andreas Stihl, 7050 Waiblingen Zweitaktmotor
JPH09151753A (ja) * 1995-11-28 1997-06-10 Sanshin Ind Co Ltd 触媒付き２サイクルエンジン

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR327192A (fr) * 1902-12-10 1903-06-16 Laillault Desire Leopold Un mode de régulation de la vitesse des moteurs à explosions
US1481792A (en) * 1922-03-29 1924-01-29 Harold S Dailey Governor for gas engines
US2100550A (en) * 1934-11-20 1937-11-30 Texas Co Emergency shut-off valve
FR1016247A (fr) * 1950-04-13 1952-11-05 Fr De Materiel Agricole Et Ind Dispositif automatique d'arrêt en cas de survitesse pour moteurs, notamment pour moteurs semi-diesel
GB720431A (en) * 1952-07-11 1954-12-22 Davey Paxman And Company Ltd Improvements in or relating to means for automatically stopping internal combustion engines
US2731001A (en) * 1952-12-26 1956-01-17 Gen Motors Corp Engine safety shut-down device
CH320071A (de) * 1953-04-04 1957-03-15 Maschf Augsburg Nuernberg Ag Einrichtung zum selbsttätigen Abstellen von Brennkraftmaschinen bei Überdrehzahl
FR1316594A (fr) * 1961-12-19 1963-02-01 Clapet obturateur
DE1183312B (de) * 1961-06-28 1964-12-10 Kloeckner Humboldt Deutz Ag Sicherheitseinrichtung fuer in brand- oder explosionsgefaehrdeter Umgebung eingesetzte selbstzuendende Einspritzbrennkraftmaschinen
FR1553089A (fr) * 1967-11-30 1969-01-10
DE2127453A1 (de) * 1970-06-05 1971-12-16 Esso Research And Engineering Co., Linden, N.J. (V.St.A.) Verfahren und Vorrichtung zur Steuerung eines Verbrennungsmotors
FR2193420A5 (fr) * 1972-07-18 1974-02-15 Schwermasch Liebknecht Veb K
FR2235291A1 (fr) * 1973-06-26 1975-01-24 Semt
GB1392048A (en) * 1972-01-12 1975-04-23 Hill Rotherham Ltd Thomas Diesel engines

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415505A (en) * 1944-10-19 1947-02-11 Mallory Marion Device for throttling internalcombustion engines
US2479257A (en) * 1946-07-29 1949-08-16 C F Strover Vacuum operated governor for gas motors
US4092970A (en) * 1970-06-05 1978-06-06 Exxon Research And Engineering Company Controlling internal combustion engines
US3960123A (en) * 1974-10-04 1976-06-01 Berninger Kenneth L Engine speed maintaining apparatus

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR327192A (fr) * 1902-12-10 1903-06-16 Laillault Desire Leopold Un mode de régulation de la vitesse des moteurs à explosions
US1481792A (en) * 1922-03-29 1924-01-29 Harold S Dailey Governor for gas engines
US2100550A (en) * 1934-11-20 1937-11-30 Texas Co Emergency shut-off valve
FR1016247A (fr) * 1950-04-13 1952-11-05 Fr De Materiel Agricole Et Ind Dispositif automatique d'arrêt en cas de survitesse pour moteurs, notamment pour moteurs semi-diesel
GB720431A (en) * 1952-07-11 1954-12-22 Davey Paxman And Company Ltd Improvements in or relating to means for automatically stopping internal combustion engines
US2731001A (en) * 1952-12-26 1956-01-17 Gen Motors Corp Engine safety shut-down device
CH320071A (de) * 1953-04-04 1957-03-15 Maschf Augsburg Nuernberg Ag Einrichtung zum selbsttätigen Abstellen von Brennkraftmaschinen bei Überdrehzahl
DE1183312B (de) * 1961-06-28 1964-12-10 Kloeckner Humboldt Deutz Ag Sicherheitseinrichtung fuer in brand- oder explosionsgefaehrdeter Umgebung eingesetzte selbstzuendende Einspritzbrennkraftmaschinen
FR1316594A (fr) * 1961-12-19 1963-02-01 Clapet obturateur
FR1553089A (fr) * 1967-11-30 1969-01-10
DE2127453A1 (de) * 1970-06-05 1971-12-16 Esso Research And Engineering Co., Linden, N.J. (V.St.A.) Verfahren und Vorrichtung zur Steuerung eines Verbrennungsmotors
GB1392048A (en) * 1972-01-12 1975-04-23 Hill Rotherham Ltd Thomas Diesel engines
FR2193420A5 (fr) * 1972-07-18 1974-02-15 Schwermasch Liebknecht Veb K
FR2235291A1 (fr) * 1973-06-26 1975-01-24 Semt

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5056482A (en) * 1989-12-01 1991-10-15 Fuji Heavy Industries Ltd. Engine protecting system

Also Published As

Publication number Publication date
DE2965596D1 (en) 1983-07-07
US4323040A (en) 1982-04-06
EP0012450B1 (fr) 1983-06-01

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