US3895619A - Governors for fuel pumps - Google Patents

Governors for fuel pumps Download PDF

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Publication number
US3895619A
US3895619A US429170A US42917073A US3895619A US 3895619 A US3895619 A US 3895619A US 429170 A US429170 A US 429170A US 42917073 A US42917073 A US 42917073A US 3895619 A US3895619 A US 3895619A
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US
United States
Prior art keywords
governor
housing
engine
resilient means
fuel
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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 - Lifetime
Application number
US429170A
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English (en)
Inventor
James Charles Potter
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.)
CAV Ltd
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CAV Ltd
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Publication date
Application filed by CAV Ltd filed Critical CAV Ltd
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Publication of US3895619A publication Critical patent/US3895619A/en
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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
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
    • F02D1/04—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered by mechanical means dependent on engine speed, e.g. using centrifugal governors

Definitions

  • ABSTRACT A governor for a fuel injection pump includesya plural- [211 App! 429l70 ity of weights which effect axial movement of a member which in turn is coupled to the fuel control rod of [30] Foreign Application Priority Data the pump.
  • This invention relates to a governor for a'fuel'injection pump of the kind intended to supply fuel to an internal combustion engine, the pump, having an adjustable control rod the setting of which determines the amount of fuel delivered by the pump, the governor comprising a housing, centrifugally operable means mounted within the housing and in use, driven at a speed representative of engine speed, a member'movable by said means, a lever pivotally mounted in the housing and adapted for connection at one end to said control rod, said lever at its other end bearing on said member, whereby as the speed of the engine increases the lever will move in a direction to effect a reduction in the quantity of fuel supplied to the engine, a-leaf spring acting on said member'in a direction to oppose the action of said means, a ramp located within the housing, roller means acting intermediate the ramp and the leaf spring and means for adjusting the setting of said roller whereby the force exerted by the leaf spring on said member can be adjusted.
  • the object of the invention is to provide such a governor in a simple and convenient form.
  • the ramp in a governor of the kind specified the ramp is movably mounted within the housing, and there is interposed between the ramp and the housing, resilient means which as the speed of operation of the engine continues to increase above a predetermined value, will be compressed thereby causing movement of the lever in a direction to reduce the amount of fuel supplied by the pump.
  • FIG. 1 is a sectional side elevation to the governor and showing it attached to a portion of a fuel injection
  • FIG. 2 is a side elevation of a portion of the governor shown in FIG. 1, and
  • FIG. 3. shows the characteristic of the governor of FIG. 1.
  • a fuel pump which comprises a plurality of individual injection pumps arranged to supply fuel to respective injectors associated with the cylinders of the engine respectively.
  • the pump includes a cam shaft 11 which extends from one end of the pump into a housing 12 of the governor. The cam shaft is driven by the associated engine in timed relationship therewith.
  • centrifugally operable means 13 Mounted on the extended portion of the cam shaft 1 1 is a centrifugally operable means 13, which includes a plurality of pivotal weights 14 mounted upon a part which is secured to the cam shaft.
  • the centrifugally operable means includes a sleeve 15 having a flange 16.
  • Mounted about the sleeve 15 is a collar 17 and interposed between the collar and the flange 16 is a thrust bearing.
  • a lever 18 Pivotally mounted within the housing is a lever 18 which has a pivot axis indicated at 19.
  • the lower end of the lever is bifurcated, the limbs having pins which engage within a groove formed in the periphery of the collar 17.
  • the upper end of the lever 18 is forked and is engaged with the control rod of the pump.
  • the weights 14 will move outwardly and the lever 18 will pivot about the pivot axis 19 and impart axial movement to the control rod 20 in a direction to reduce the amount of fuel supplied by the pump to the engine.
  • leaf spring 21 which as shown more clearly in FIG. 2 comprises two main leaves 22' having interposed therebetween afurther leaf 23 of thinner section.
  • the upper end of the leaf spring 21 is pivotally mounted at one end about a pivot 24.
  • P roller assembly 27 which includes a first roller engaging with'the ramp, and a second roller which engages with the leaf spring 21.
  • the roller assembly is located within anarm 28,the armbeing mounted upon an angularly movable shaft 29' adjustable from the exteriorof the housing; Movement of the arm 29 which'in practice is connected to a manually operable control member,va-
  • the roller assembly 27' is moved downwardly, the spring is bowed and thereby exerts greater force on the collar 17.
  • the force exerted by the leaf spring opposes the actionof the governor weights.
  • the arm 25 defines a housing for a plunger 35, which is loaded by a light coiled compression spring 36.
  • an adjusting member 37 which houses a further plunger 38 loaded by resilient means in the form of a coiled compression spring 39. Both plungers and 38 can partake of limited movement under the action of their respective springs.
  • the arm 25 carries a pair of pins 40 which extend inwardly for possible engagement as will be described, With a flange 41 formed on the sleeve 15.
  • abutment plate 42 Mounted on thecontrol rod 20 is an abutment plate 42 which can engage with a pair of stops.
  • the stop 43 determines the maximum fuel which can be supplied to the engine in normal circumstances, and the second stop 44 permits the control rod 20 to move an additional amount so that the pump will supply excess fuel for starting purposes.
  • the maximum fuel delivery line is indicated at 45 and it will be seen that it includes a substantially horizontal portion, this being determined by the stop 43. Also shown by dotted line 46 is the excess fuel delivery which is obtained when the stop 44 is brought into operation.
  • the stops 43 and 44 are slidably mounted upon a rod operable from the exterior of the housing.
  • the spring 36 moves the plunger 35 and the arm 25 pivots about its axis 24, and at the same time imparts movement to the sleeve 17 through the intermediary of the roller assembly and the main leaf spring.
  • the collar 17 is moved in a direction towards the pump and the control rod 20 moves an additional amount in order to obtain excess fuel.
  • the pins 40 engage with the flange 41.
  • the weights 14 will move outwardly and compress the spring 36 so that the various parts return to the position shown in FIG. 1'.
  • the speed at which this occurs depends upon the pre-load applied to the spring 39, and during compression of the spring 39 a progressive but gradual reduction in the fuel supplied to the engine occurs with increasing speed.
  • the shape of the portion 47 of the fuel delivery curve is determined by the leaf spring 21, and it will be seen that as the speed of operation increases the fuel will gradually be reduced to zero.
  • the above description of operation assumes that the arm 28 is set by the driver to give the maximum torque from the engine. In the event that the driver is not demanding the maximum torque and the speed is below the speed at which the spring 39 just starts to compress, then the reduction of fuel with increasing speed will be obtained solely as a result of the leaf spring 21.
  • the shape of the resulting curve is shown at 50.
  • FIG. 3 shows an additional line 49 having a different slope to that of portion 47 of the maximum fuel characteristic.
  • the line 49 is obtained as a result of the effect of the leaf spring 23, and it results when the arm 28 is set in the idling position as shown in FIG. 2, in increased sensitivity of the governor at idling speeds.
  • a governor In combination with an internal combustion engine, a governor, a fuel injection pump of the type intended to supply fuel to an internal combustion engine, the pump having an adjustable control rod the setting of which determines the amount of fuel delivered by the pump, the governor comprising a housing, centrifu gally operable means mounted within the housing and in use, driven at a speed representative of engine speed, a member movable by said means, a lever pivotally mounted in the housing and connected at one end to said control rod, said lever at its other end bearing on said member, whereby as the speed of the engine increases the lever will move in an direction to effect a reduction in the quantity of fuel supplied to the engine, a leaf spring acting on said member in a direction to oppose the action of said means, a ramp located within the housing, roller means acting intermediate the ramp and the leaf spring, means for adjusting the setting of said roller whereby the force exerted by the leaf spring on said member can be adjusted, said ramp being movably mounted within the housing and there being interposed between the ramp and the housing, resilient means which as the
  • a governor as claimed in claim 2 including additional resilient means acting between said first mentioned resilient means and said ramp.
  • a governor as claimed in claim 4 including a pivotal arm, said additional resilient means being mounted on said pivotal arm, and said ramp being defined on said pivotal arm.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
  • Fuel-Injection Apparatus (AREA)
US429170A 1972-12-29 1973-12-28 Governors for fuel pumps Expired - Lifetime US3895619A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6014072A GB1445842A (en) 1972-12-29 1972-12-29 Governors for fuel pumps

Publications (1)

Publication Number Publication Date
US3895619A true US3895619A (en) 1975-07-22

Family

ID=10485092

Family Applications (1)

Application Number Title Priority Date Filing Date
US429170A Expired - Lifetime US3895619A (en) 1972-12-29 1973-12-28 Governors for fuel pumps

Country Status (6)

Country Link
US (1) US3895619A (de)
JP (1) JPS549660B2 (de)
DE (1) DE2364840A1 (de)
FR (1) FR2212490B1 (de)
GB (1) GB1445842A (de)
IT (1) IT1000397B (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000728A (en) * 1974-08-15 1977-01-04 Diesel Kiki Co., Ltd. Fuel injection governor
US4095574A (en) * 1975-12-15 1978-06-20 Diesel Kiki Co., Ltd. Mechanical governor for internal combustion engine
US4109629A (en) * 1974-04-01 1978-08-29 C.A.V. Limited Fuel injection pumping apparatus
US4132206A (en) * 1976-04-13 1979-01-02 Robert Bosch Gmbh Centrifugal force speed governor for internal combustion engines with fuel injection
US4831984A (en) * 1987-09-18 1989-05-23 Disel Kiki Co., Ltd. Centrifugal governor for injection type internal combustion engine
DE3827734A1 (de) * 1988-08-16 1990-02-22 Kloeckner Humboldt Deutz Ag Einspritzvorrichtung fuer brennkraftmaschinen mit angleichung der einspritzmenge
US5190004A (en) * 1990-09-12 1993-03-02 Yanmar Diesel Engine Co., Ltd. Internal combustion engine
CN104121126A (zh) * 2013-04-23 2014-10-29 斯太尔动力有限责任公司 具有离心调节器的喷油泵

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2554376B2 (ja) * 1989-10-31 1996-11-13 石川島芝浦機械株式会社 ディーゼルエンジンの調速装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3185141A (en) * 1963-01-29 1965-05-25 Simms Motor Units Ltd Variable rate spring devices
US3759236A (en) * 1970-10-03 1973-09-18 Bosch Gmbh Robert Centrifugal governor for regulating the rpm of internal combustion engines
US3791362A (en) * 1971-12-23 1974-02-12 Komatsu Mfg Co Ltd Governor for controlling the fuel delivery of a fuel injection pump for an internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3185141A (en) * 1963-01-29 1965-05-25 Simms Motor Units Ltd Variable rate spring devices
US3759236A (en) * 1970-10-03 1973-09-18 Bosch Gmbh Robert Centrifugal governor for regulating the rpm of internal combustion engines
US3791362A (en) * 1971-12-23 1974-02-12 Komatsu Mfg Co Ltd Governor for controlling the fuel delivery of a fuel injection pump for an internal combustion engine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4109629A (en) * 1974-04-01 1978-08-29 C.A.V. Limited Fuel injection pumping apparatus
US4000728A (en) * 1974-08-15 1977-01-04 Diesel Kiki Co., Ltd. Fuel injection governor
US4095574A (en) * 1975-12-15 1978-06-20 Diesel Kiki Co., Ltd. Mechanical governor for internal combustion engine
US4132206A (en) * 1976-04-13 1979-01-02 Robert Bosch Gmbh Centrifugal force speed governor for internal combustion engines with fuel injection
US4831984A (en) * 1987-09-18 1989-05-23 Disel Kiki Co., Ltd. Centrifugal governor for injection type internal combustion engine
DE3827734A1 (de) * 1988-08-16 1990-02-22 Kloeckner Humboldt Deutz Ag Einspritzvorrichtung fuer brennkraftmaschinen mit angleichung der einspritzmenge
US5190004A (en) * 1990-09-12 1993-03-02 Yanmar Diesel Engine Co., Ltd. Internal combustion engine
CN104121126A (zh) * 2013-04-23 2014-10-29 斯太尔动力有限责任公司 具有离心调节器的喷油泵

Also Published As

Publication number Publication date
FR2212490B1 (de) 1976-11-19
JPS549660B2 (de) 1979-04-26
GB1445842A (en) 1976-08-11
FR2212490A1 (de) 1974-07-26
JPS4997122A (de) 1974-09-13
DE2364840A1 (de) 1974-07-04
IT1000397B (it) 1976-03-30

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