Claims:We Claim:
1. A governor (100) for a high pressure fuel pump, said governor (100) comprising at least:
a tension lever (175);
a housing (106b) in contact with said tension lever (175) at one end, said housing (106b) secured to a housing (107) of said governor (100);
a reciprocating member (190) connected to said governor (100) by means of said housing (106b), said reciprocating member (190) adapted to displace said tension lever (175) to facilitate increasing a quantity of fuel delivered by said high pressure fuel pump.

2. The governor (100) for the high pressure fuel pump in accordance with Claim 1 wherein said reciprocating member (190) is inserted through a cap (106c) that is secured to said housing (106b) via a through hole defined in said cap (106c).

3. The governor (100) for the high pressure fuel pump in accordance with Claim 1 wherein said reciprocating member (190) comprises a frame (3).

4. The governor (100) for the high pressure fuel pump in accordance with Claim 3 wherein said frame (3) comprises a first linear gear teeth arrangement (1A).

5. The governor (100) for the high pressure fuel pump in accordance with Claim 4 wherein said frame (3) comprises a second linear gear teeth arrangement (1B) positioned proximate to said first linear gear teeth arrangement (1A).

6. The governor (100) for the high pressure fuel pump in accordance with Claim 5 further comprising a pinion (2A) positioned between said first linear gear teeth arrangement (1A) and said second linear gear teeth arrangement (1B), said pinion (2A) adapted to rotate when said second linear gear teeth arrangement (1B) is translated.

7. The governor (100) for the high pressure fuel pump in accordance with Claim 5 further comprising a linkage (4) formed on said second linear gear teeth arrangement (1B), said linkage (4) adapted to be translated by a user to facilitate translating said second linear gear teeth arrangement (1B).

8. The governor (100) for the high pressure fuel pump in accordance with Claim 5 further comprising a connecting rod (6) formed on said first linear gear teeth arrangement (1A), said connecting rod (6) adapted to be inserted through said cap (106c) and said housing (106b).

9. The governor (100) for the high pressure fuel pump in accordance with Claim 8 wherein said linkage (4) is connected to a lever, said lever adapted to be activated by a user to facilitate translating said second linear gear teeth arrangement (1B) and thereby said first linear gear teeth arrangement (1A) by means of rotation of said pinion (2A), wherein a translation of said first linear gear teeth arrangement (1A) is adapted to displace said tension lever (175) to facilitate increasing a speed of said high pressure fuel pump.

10. The governor (100) for the high pressure fuel pump in accordance with Claim 9 wherein the displacement of said tension lever (175) induces a translation of a control rack (165) of said governor (100), wherein the translation of said control rack (165) of said governor (100) facilitates increasing the speed of said high pressure fuel pump.
, Description:Field Of the invention
[0001] This invention relates to a high pressure fuel pump and more particularly to a governor for the high pressure fuel pump.
Background of the invention
[0002] U.S. Patent Application Number 4397277 A describes a centrifugal governor for use with an internal combustion engine. Means is provided which is adapted to bring an adjusting member into urging contact with a fuel quantity increasing lever engaging the guide lever and the floating lever only at engine full load in medium and high engine speed ranges, whereby contraction of the adaptation spring causes angular displacement of the fuel quantity increasing lever in the fuel quantity increasing direction. Stopper means may also be provided which is adapted to be in urging contact with the fuel quantity increasing lever in the medium and high engine speed ranges to prohibit angular displacement of the fuel quantity increasing lever in the fuel quantity decreasing direction which is caused by the contraction of the adaptation spring, when the adjusting member is positioned off the fuel quantity increasing lever at engine partial load.
Brief description of the accompanying drawings
[0003] Figure 1 illustrates a governor actuation mechanism in one embodiment of the invention.
[0004] Figure 2 illustrates the governor actuation mechanism in another embodiment of the invention.
[0005] Figure 3 illustrates a governor for the high pressure fuel pump.
Detailed description of the invention
[0006] A governor 100 for a high pressure fuel pump is described. The governor 100 comprises at least a tension lever 175. A housing 106b is in contact with the tension lever 175 at one end, the housing 106b secured to a housing 107 of the governor 100. A reciprocating member 190 is connected to the governor 100 by means of the housing 106b, the reciprocating member 190 adapted to displace the tension lever 175 to facilitate increasing a quantity of fuel delivered by the high pressure fuel pump.
[0007] Figure 1 illustrates a governor actuation mechanism 12 for the high pressure fuel pump. The governor actuation mechanism 12 comprises a housing 106b that is secured to a housing 107 of the governor 100. The housing 106b of the governor actuation mechanism 12 is secured to the housing 107 of the governor 100 by means of any coupling/securing mechanism that is known in the art. The governor actuation mechanism 12 includes a spring member 106a that is positioned within the housing 106b. A cap 106c is secured to the housing 106b by screwing the cap 106c onto the housing 106b. The cap 106c is secured to the housing 106b by screwing the cap 106c onto the housing 106b via screw threads. A through hole is drilled through the cap 106c as well as the housing 106b.
[0008] A reciprocating member 190 is inserted through the through hole defined in the cap 106c and the housing 106b and secured to the cap 106c via any fastening means that is known in the art. In an alternate exemplary embodiment, a plurality of screw threads defined at an end portion 10 of the reciprocating member 190 synchronize with the plurality of screw threads defined inside the cap 106c to facilitate fastening the reciprocating member 190 to the cap 106c. The reciprocating member 190 comprises a frame 3. The frame 3 comprises a first portion 3a and a second portion 3b. A first linear gear teeth arrangement 1A is positioned within the frame 3 between the first portion 3a and the second portion 3b. The first linear gear teeth arrangement 1A comprises a connecting rod 6 and a plurality of gear teeth 2 that are defined at the end of the connecting rod 6. A second linear gear teeth arrangement 1B is positioned within the frame 3 and proximate to the first linear gear teeth arrangement 1A. The second linear gear teeth arrangement 1B is positioned within the frame 3 between the first portion 3a and the second portion 3b. The second linear gear teeth arrangement 1B comprises a linkage lever 4 and a plurality of gear teeth 2 defined at the end of the linkage lever 4. A pinion 2A is positioned between the plurality of gear teeth 2 defined at the end of the connecting rod 6 and the plurality of gear teeth 2 defined at the end of the linkage lever 4. The pinion 2A is adapted to rotate when the second linear gear teeth arrangement 1B is translated by a user.
[0009] In an exemplary embodiment, the linkage 4 is connected to a lever. The lever is adapted to be activated by the user to facilitate translating the second linear gear teeth arrangement 1B and thereby the first linear gear teeth arrangement 1A by means of rotation of the pinion (2A).
[0010] Figure 2 illustrates a governor actuation mechanism 12 for the high pressure fuel pump. The governor actuation mechanism 12 comprises the housing 106b that is secured to the housing 107 of the governor 100. The housing 106b of the governor actuation mechanism 12 is secured to the housing 107 of the governor 100 by means of any coupling/securing mechanism that is known in the art. The governor actuation mechanism 12 includes a spring member 106a that is positioned within the housing 106b. A cap 106c is secured to the housing 106b. The cap 106c is secured to the housing 106b by screwing the cap 106c onto the housing 106b via screw threads. A through hole is drilled through cap 106c as well as the housing 106b.
[0011] A reciprocating member 190 is inserted through the through hole defined in the cap 106c and the housing 106b and secured to the cap 106c via any fastening means that is known in the art. In an alternate exemplary embodiment, a plurality of screw threads defined at an end portion 10 of the reciprocating member 190 synchronizes with the plurality of screw threads defined inside the cap 106c to facilitate fastening the reciprocating member 190 to the cap 106c. The reciprocating member 190 comprises a frame 3. A linkage lever 4 is positioned within the frame 3. A connecting rod 6 is positioned within the frame 3 and proximate to the linkage lever 4. The connecting rod 6 is positioned within the frame 3. A square hinged plate 7 is positioned between the linkage lever 4 and the connecting rod 6. The square hinged plate 7 is adapted to rotate when the linkage lever 4 is translated. A limiting screw 8 is connected to the frame 3 by using any fastening means that is known in the art. A portion of the limiting screw 8 extends from a top portion of the frame 3 and into the frame 3. The limiting screw 8 limits a degree of rotation of the square plate 7 when the linkage lever 4 is translated. When the linkage lever 4 is translated, the square plate 7 rotates about its center. The limiting screw 8 limits a degree of rotation of the square plate 7 such that the connecting rod 6 is also translated to a limited extent.
[0012] In an exemplary embodiment, the linkage lever 4 is connected to a lever. The lever is adapted to be activated by the user to facilitate translating the linkage lever 4 and thereby the connecting rod 6 by means of rotation of the square plate 7.
[0013] Figure 3 illustrates the governor 100 for the high pressure fuel pump. The governor 100 comprises a tension lever 175. The housing 106 of the governor actuation mechanism 12 is positioned proximate to the tension lever 175. The reciprocating member 190 is positioned within the housing 106 of the governor actuation mechanism 12 such that the connecting rod 6 is positioned proximate to the tension lever 175. An adaption module 177 is connected to the tension lever 175, wherein the adaption capsule 177 translates when the tension lever 175 is translated. A guide busing 115 is connected to the adaption lever 177 and translates with the translation of the adaption capsule 177. A guide lever 130 is connected to the guide bushing 115 such that a translation of the guide bushing 115 causes a rotation of the guide lever 130. When the guide bushing 115 translates towards the left, the pivot 140 is rotated in the clockwise direction thereby rotating the guide lever 130 in the clockwise direction. The rotation of the guide lever 130 in the clockwise direction causes the fulcrum lever 145 that is connected to the guide lever 130 at the pivot 140 to be rotated in the anti-clockwise direction. The rotation of the fulcrum lever 145 in the anti-clockwise direction causes the linkage 167 that is connected to the fulcrum lever 145 to translate in the direction of translation of the fulcrum lever 145. The translation of the linkage 167 that is connected to the fulcrum lever 145 causes the control rack 165 that is connected to the linkage 167 to translate in the same direction of translation of the tension lever 175. This causes the high pressure fuel pump to supply an increased quantity of fuel to the engine. The increase in the quantity of fuel delivered to the engine causes an increase in the engine speed, which is the desired end result.
[0014] A working of the governor 100 for the high pressure fuel pump is described as an example. In an exemplary embodiment, the lever that is connected to the linkage 4 is adapted to be activated by the user to facilitate translating the second linear gear teeth arrangement 1B and thereby the first linear gear teeth arrangement 1A by means of rotation of the pinion (2A) in the clockwise direction. The translation of the first linear gear teeth arrangement 1A as a consequence of the rotation of the pinion 2A causes the connecting rod 6 to translate through the through hole defined in the cap 106c and the housing 106b. The translation of the control rod 6 causes the control rod 6 to displace the tension lever 175 towards the left. The displacement of the tension lever 175 towards the left causes the adaption capsule 177 that is connected to the tension lever 175 to translate to the left. The translation of the adaption capsule 177 to the left causes the guide bushing 115 that is connected to the adaption capsule 177 to translate to the left. Therefore, the guide lever 130 and hence the pivot 140 is rotated in the clockwise direction. The rotation of the guide lever 130 in the clockwise direction causes the fulcrum lever 145 that is connected to the guide lever 130 at the pivot 140 to be rotated in the anti-clockwise direction. The rotation of the fulcrum lever 145 in the anti-clockwise direction causes the linkage 167 that is connected to the fulcrum lever 145 to translate in the direction of translation of the fulcrum lever 145. The translation of the linkage 167 that is connected to the fulcrum lever 145 causes the control rack 165 that is connected to the linkage 167 to translate in the same direction of translation of the tension lever 175. This causes the high pressure fuel pump to supply an increased quantity of fuel to the engine. The increase in the quantity of fuel delivered to the engine causes an increase in the engine speed.
[0015] It must be understood that the embodiments explained above are only illustrative and do not limit the scope of the disclosure. Many modifications in the embodiments with regard to leverage and dimensions of various levers are envisaged and form a part of this invention. The scope of the invention is only limited by the claims.