Claims:We claim:
1. A governor (100) for an inline pump, said governor (100) comprising:
a pair of fly weights (105a) and (105b) coupled to a cam shaft (110);
a control lever (10) coupled to said governor (100), said control lever (10) comprising:
a first plate (12);
a second plate (14) coupled to said first plate, said second plate (14) secured to a rigid support; characterized in that
a third plate (16) coupled between said first plate (12) and said second plate (14), and a displacement lever coupled to said third plate (16) in a manner such that said displacement lever is adapted to displace said third plate (16) to increase the speed of said governor (100).

2. The governor (100) for an inline pump in accordance with Claim 1 wherein said third plate (16) is coupled to said first plate (12) via a spring member (18).

3. The governor (100) for an inline pump in accordance with Claim 1 wherein said third plate (16) comprises a tapered portion (24), said tapered portion (24) facilitates increasing a speed of said governor (100) when displaced from its equilibrium position by said displacement lever.

4. The governor (100) for an inline pump in accordance with Claim 3 wherein said third plate (16) may be displaced from a first end (28) of said tapered portion (24) to a second end (30) of said tapered portion (24), and wherein the speed of said governor (100) linearly increases when the third plate (16) is displaced from said first end (28) to said second end (30) by said displacement lever.

5. The governor (100) for an inline pump in accordance with Claim 3 wherein said tapered portion (24) of said third plate (16) may be displaced such that said tapered portion (24) of said third plate (16) abuts against an idle screw (22), said third plate (16) restricts movement of said idle screw (22) to facilitate restricting the speed of said governor (100).
, Description:Field of the invention:
[0001] This disclosure relates to a governor for an inline pump, and more particularly to an apparatus for controlling a speed of the governor of the inline pump by means of a control lever.

Background of the invention:
[0002] Russian Patent Application Number 2144997-C1 describes a governor. The governor includes a body, a centrifugal rotational speed sensor, a governor lever fitted with a spring-loaded mechanism of reverse-action corrector, a rack lever articulated with governor lever, a control lever, and a main lever mounted for engagement with the body through an adjusting screw. A direct action spring loaded corrector is fitted on the main lever for engagement with the governor lever. A control lever is connected with the accelerator pedal by means of a rod. A spring loaded stop is mounted in the body for engagement with the main lever. An end stop roller is fitted on the control lever, and inner and outer profile rollers are mounted in the body.

Brief description of the accompanying drawings:
[0003] An embodiment of the disclosure is described with reference to the following accompanying drawings:
[0004] Figure 1 illustrates a governor for an inline fuel injection pump in accordance with this disclosure.
[0005] Figure 2 illustrates a front view of a control lever that is coupled to the governor of the inline fuel injection pump in accordance with this disclosure.
[0006] Figure 3 illustrates a side view of a plate of the control lever that is coupled to the governor of the inline fuel injection pump in accordance with this disclosure.

Detailed description of the embodiments:
[0007] A governor 100 for an inline pump is described. The governor 100 comprises a pair of fly weights 105a and 105b coupled to a cam shaft 110. A control lever 10 is coupled to the governor 100, wherein the control lever 10 comprises a first plate 12 and a second plate 14 coupled to the first plate, wherein the second plate 14 is secured to a rigid support. A third plate 16 is coupled between the first plate 12 and the second plate 14, and a displacement lever coupled to the third plate 16 in a manner such that the displacement lever is adapted to displace the third plate 16 to increase the speed of the governor 100.
[0008] Figure 1 illustrates a governor 100 for inline fuel injection pumps, in accordance with one embodiment. The governor 100 comprises a pair of fly weights 105a and 105b in communication with a cam shaft 110. The governor 100 is characterized by a guide bushing comprising a first portion 115a and a second portion 115b. The first portion 115a is connected to the pair of fly weights 105a and 105b. Further, the first portion 115a and the second portion 115b are connected to each other through a spring and retainer assembly 120. The governor 100 is also characterized by a linkage lever 130 comprising a first end and a second end. The first end of the linkage lever 130 is connected to the first portion 115a of the guide bushing and mounted pivotally on a guide lever 135 at a first pivot point 140. The linkage lever 130 is adapted to move in accordance with the first portion 115a of the guide bushing. Further, the governor 100 is characterized by a fulcrum lever 145 comprising a first end and a second end. The fulcrum lever 145 is mounted pivotally on the guide lever 135 at the first pivot point 140. The governor 100 is also characterized by a negative adaption lever 150 comprising a first end and a second end. The first end of the negative adaption lever 150 is mounted pivotally on the fulcrum lever 145 at a second pivot point 155 and the second end of the negative adaption lever 150 is connected to the linkage lever 130 such that the negative adaption lever 150 is enabled to swing between a maximum position and a minimum position in accordance with movement of the linkage lever 130.
[0009] Referring to Figure 1, the flyweights 105a and 105b is in communication with a cam shaft 110 through a drive shaft 107. The flyweights 105a and 105b are pivotally mounted on a drive shaft 107 that is in communication with the cam shaft 110 of a fuel pump. When the cam shaft 110 rotates, the flyweights 105a and 105b develop a centrifugal force. The centrifugal force developed by the flyweights 105a and 105b is transmitted to a first portion 115a of the guide bushing through pressure arms 109a and 109b. The first portion of the guide bushing 115a and the second portion 115b of the guide bushing is connected to each other through the spring and retainer assembly 120. The stiffness of the spring in the spring and retainer assembly 120 is lesser than the stiffness of the spring 177 and the stiffness of the governor spring 170.
[00010] The first end of the linkage lever 130 is fixed to a retainer of the spring and retainer assembly 120 such that any movement of the first portion 115a of the guide bushing is imparted to the linkage lever 130. Also, the linkage lever 130 is pivotally mounted on the guide lever 135 at the first pivot point 140 as shown in Figure 1. The second end of the linkage lever 130 is connected to the second end of the negative adaption lever 150.
[00011] The guide lever comprises a first end and a second end. The first end is fixed to the second portion 115b of the guide bushing and the second end is in hinge connection with a top portion 180 of the governor covering.
[00012] The first end of the fulcrum lever 145 is in hinge connection with a bottom portion 185 of the governor covering. The fulcrum lever 145 is pivotally mounted on the guide lever 135 at the first pivot point 140 so that the fulcrum lever 145 can move in accordance with the movement of the guide lever 135. The second end of the fulcrum lever forms a second pivot point 155 as shown in Figure 1.
[00013] The first end of the negative adaption lever 150 is mounted pivotally at the second pivot point 155 as shown in Figure 1 and the second end of the negative adaption lever 150 is connected to the linkage lever 130 so that the negative adaption lever 150 can move in accordance with the movement of the linkage lever 130. Also the pivotal mounting at the second pivot point 155 enables the negative adaption lever 150 to swing between a maximum position and a minimum position in accordance with movement of the linkage lever 130. The negative adaption lever 150 is connected to the control rack 165 through a shackle lever 167. The control rack undergoes movement in accordance with the movement of the negative adaption lever 150 thereby controlling a quantity of fuel injected.
[00014] When the accelerator pedal is depressed, the lever arm 108 of the governor 100 of the inline fuel injection pump rotates in the anticlockwise direction and abuts against an idle screw of the control lever 10. The control lever 10 facilitates increasing and decreasing the speed of the governor 100 of the inline fuel injection pump as will be explained in more detail below.
[00015] Figure 2 illustrates a front view of a control lever 10 that is coupled to the governor of the inline fuel injection pump in accordance with this disclosure. The control lever 10 includes a first plate 12 and a second plate 14 that is coupled to the first plate 12. Specifically, the first plate 12 is coupled to the second plate 14 via a plurality of bolts 20. The second plate 14 is coupled to the first plate, wherein the second plate 14 is secured to a rigid support. In an embodiment, the rigid support is the pivot which the lever arm 117 is secured to. In an alternate embodiment, the rigid support may be any other pivot to which the second plate 14 is secured. In the embodiment shown in Figure 2, three bolts are used to couple the first plate 12 to the second plate 14. In an alternate embodiment, any number of bolts may be used to couple the first plate 12 to the second plate 14.
[00016] A third plate 16 is coupled between the first plate 12 and the second plate 14. The third plate 16 is sandwiched between the first plate 12 and the second plate 14. A first end of the third plate 16 is connected to the first plate 12 via a spring member 18. A second end of the third plate 16 is connected to a displacement lever (not shown). The displacement lever may be operated by a user to displace the third plate 16 from a first position to a second position in the downward direction. The spring member 18 facilitates restoring the third plate 16 to its equilibrium position when the displacement lever is deactivated by the user.
[00017] Figure 3 illustrates a side view of the third plate 16 of the control lever 10 that is coupled to the governor 100 of the inline fuel injection pump in accordance with this disclosure. The third plate 16 includes a notched portion 24. The notched portion 24 is defined between the first end 28 and the second end 30. In its equilibrium position, an idle screw 22 is positioned proximate to the first end 28 of the third plate 16. When the third plate 16 is moved in the downward direction by operating the displacement lever, the notched portion 24 is displaced in the downward direction. As a consequence of the notched portion 24 being displaced in the downward direction, the idle screw 22 may be displaced to a greater extent than when it were possible at its equilibrium position. When the displacement lever is moved in the downward direction fully, the second end 30 of the notched portion 24 is in proximity with the idle screw 22. Therefore, the idle screw 22 may be displaced against the third plate 16 to facilitate increasing a speed of the governor 100.
[00018] The working of the control lever 10 that is coupled to the governor 100 of the inline fuel injection pump is described as an example. When the displacement lever is moved in the downward direction by the user, the third plate 16 that is sandwiched between the first plate 12 and the second plate 14 is moved in the downward direction. Therefore, the tapered portion 24 of the third plate 16 is moved in the downward direction. When the accelerator pedal is depressed, the idle screw 22 is displaced further against the notched portion 24 of the third plate 16 than if it were possible when the idle screw 22 were positioned against the first position 28 of the third plate 16. This allows for a greater acceleration to be realized by the governor 100 of the inline fuel injection pump. The further increase in the displacement of the idle screw 22 against the third plate 16 when the accelerator pedal is depressed facilitates increasing a speed of the governor 100.
[00019] An example of the use of the disclosure is explained as an example with respect to a tractor with ploughing equipment. The ploughing equipment of the tractor is coupled to the hydraulic equipment of the engine. The hydraulic equipment of the engine is coupled to the engine drive shaft via mechanical linkages. During normal ploughing operation of the tractor, the plowing equipment is at the ground level. The torque supplied by the hydraulic equipment of the engine causes the blades of the ploughing equipment to rotate. This ensures the normal ploughing operation. When the blades of the ploughing equipment are covered with grass and soil, it is required to rotate the blades of the ploughing equipment at a higher speed. The higher speed of the blades of the ploughing equipment causes a higher centrifugal force, which causes the grass and soil to be thrown off.
[00020] Therefore, the blades of the ploughing equipment are withdrawn from the ground. The blades of the ploughing equipment may be rotated at a higher speed by the hydraulic equipment due to lower resistive torque acting on the ploughing equipment. Therein, the displacement lever is moved in the downward direction by the user. The third plate 16 that is sandwiched between the first plate 12 and the second plate 14 is moved in the downward direction. Therefore, the accelerator pedal may be displaced by the driver of the tractor to a greater extent than it were possible before the displacement lever was moved. When the accelerator pedal is displaced by the driver of the tractor to a great extent, the engine drive shaft rotates at a higher speed. The higher drive shaft speed translates to higher speed of the hydraulic equipment. The higher speed of the hydraulic equipment causes higher speed of the blades of the ploughing equipment. Therefore, the blades of the ploughing equipment may be rotated at a higher speed, thereby causing the soil and grass to be thrown off without manually removing it.
[00021] It should be understood that embodiments explained in the description above are only illustrative and do not limit the scope of this invention. Many such embodiments and other modifications and changes in the embodiment explained in the description are envisaged. The scope of the invention is only limited by the scope of the claims.