DESC:TECHNICAL FIELD
[001] The embodiments herein generally relate to hitch control valves in vehicles and more particularly, but not exclusively to an integrated control valve assembly for a vehicle hydraulic system, which comprises a valve body, an isolator valve, a speed response valve, a check valve, a cylinder safety valve, an end cover, a system safety valve and at least one directional control valve, where the directional control valve is either assembled to the integrated control valve assembly or not assembled to the integrated control valve assembly.

BACKGROUND
[002] Generally, work vehicles such as tractors or other similar vehicles comprise a three point hitch adapted to attach implements/auxiliary devices such as rotavator, ploughs, mowing deck, etc to the vehicle for field operations. The movement of arms of the three point hitch is controlled by the control valves of the hydraulic system. Conventional vehicle hydraulic system includes a hitch control valve and a directional control valve for controlling the flow of fluid to a hydraulic cylinder thereby controlling the movements of the three point hitch. The hitch control valve of the aforementioned hydraulic system is a combination of a response valve assembly and a control valve assembly. The response valve assembly is mounted on top of hydraulic lift housing. The control valve assembly is mounted inside the hydraulic lift housing and is not easily accessible to an operator during service or repair process. The directional control valve is arranged in series with the hitch control valve. Hence, fluid from a pump is first supplied to the directional control valve and thereafter to the hitch control valve such that the oil from the directional control valve flows to the response valve assembly through a high pressure carry over pipe and thereafter the oil from response valve assembly flows to the control valve assembly. Further, the aforementioned hydraulic system has complex piping arrangement, incurs high cost due to assembly of various child parts, higher number of fluid leakage points, usage of separate safety valves for the direction control valve, the hydraulic cylinder and the hydraulic system, and difficult to service the safety valves due to complex orientation which in turn leads to accumulation of contaminants in safety valves.
[003] Therefore, there exists a need for an integrated control valve assembly for a vehicle hydraulic system, which obviates the aforementioned drawbacks.

OBJECTS
[004] The principal object of an embodiment of this invention is to provide an integrated control valve assembly for a vehicle hydraulic system, which comprises a valve body, an isolator valve, a speed response valve, a check valve, a cylinder safety valve, an end cover, a system safety valve and at least one directional control valve, where the directional control valve is either assembled to the integrated control valve assembly or not assembled to the integrated control valve assembly.
[005] Another object of an embodiment of this invention is to provide an integrated control valve assembly for a vehicle hydraulic system, which restricts accumulation of contaminants in cylinder safety valve and system safety valve.
[006] Yet another object of an embodiment of this invention is to provide an integrated control valve assembly for a vehicle hydraulic system, which facilitates easier servicing/repair process.
[007] A further object of an embodiment of this invention is to provide an integrated control valve assembly for a vehicle hydraulic system, which reduces the number of leakage points and eliminates high pressure carry over pipe.
[008] These and other objects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.

BRIEF DESCRIPTION OF DRAWINGS
[009] The embodiments of the invention are illustrated in the accompanying drawings, throughout which like reference letters indicate corresponding parts in the various figures. The embodiments herein will be better understood from the following description with reference to the drawings, in which:
[0010] FIG. 1 depicts a perspective view of an integrated control valve assembly for a vehicle hydraulic system, according to an embodiment of the invention as disclosed herein;
[0011] FIG. 2 depicts an exploded view of the integrated control valve assembly, according to an embodiment of the invention as disclosed herein;
[0012] FIG. 3 depicts another perspective view of the integrated control valve assembly, according to an embodiment of the invention as disclosed herein;
[0013] FIG. 4 depicts another perspective view of the integrated control valve assembly, according to an embodiment of the invention as disclosed herein;
[0014] FIG. 5 depicts a perspective view of a directional control valve of the integrated control valve assembly, according to an embodiment of the invention as disclosed herein;
[0015] FIG. 6 depicts a perspective view of a valve body of the integrated control valve assembly, according to an embodiment of the invention as disclosed herein; and
[0016] FIG. 7 depicts a perspective view of an end cover of the integrated control valve assembly, according to an embodiment of the invention as disclosed herein.
[0017] FIG. 8 depicts another perspective view of an end cover of the integrated control valve assembly, according to an embodiment of the invention as disclosed herein; and
[0018] FIG. 9 depicts a perspective view of the integrated control valve assembly without directional control valve, according to an embodiment of the invention as disclosed herein.

DETAILED DESCRIPTION
[0019] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
[0020] The embodiments herein achieve an integrated control valve assembly for a vehicle hydraulic system, which comprises a valve body, an isolator valve, a speed response valve, a check valve, a cylinder safety valve, an end cover, a system safety valve and at least one directional control valve, where the directional control valve is either assembled to the integrated control valve assembly or not assembled to the integrated control valve assembly. Referring now to the drawings, and more particularly to FIGS. 1 through 9, where similar reference characters denote corresponding features consistently throughout the figures, there are shown embodiments.
[0021] FIG. 1 depicts a perspective view of an integrated control valve assembly 100 for a vehicle hydraulic system, according to an embodiment of the invention as disclosed herein. In an embodiment, the hydraulic system (not shown) includes an integrated control valve assembly 100, a control valve (not shown), a hydraulic cylinder (not shown), a pump (not shown), a tank (not shown) and may include other standard components as present in standard vehicle hydraulic system. In an embodiment, the integrated control valve assembly 100 includes a valve body 102, a cylinder safety valve 104, at least one directional control valve 106, an end cover 108, a system safety valve 110, a check valve 112, a speed response valve 114 and an isolator valve 116.
[0022] FIG. 6 depicts a perspective view of a valve body 102 of the integrated control valve assembly 100, according to an embodiment of the invention as disclosed herein. In an embodiment, the valve body 102 is used for housing/mounting the cylinder safety valve 104, the directional control valve 106, the end cover 108, the check valve 112, the speed response valve 114 and the isolator valve 116. In an embodiment, the valve body 102 includes a first fluid passage 102a (as shown in fig. 4), a second fluid passage 102b (as shown in fig. 4), a third fluid passage 102c (as shown in fig. 4), a fourth fluid passage 102d (as shown in fig. 4), a cylinder port 102e (as shown in fig. 3), a cylinder safety valve receiving portion 102f (as shown in fig. 4), a check valve receiving portion 102g, a speed response valve receiving portion 102h, an isolator valve receiving portion 102i, a plurality of openings 102j (as shown in fig. 4) and a plurality of cavities 102k. In an embodiment, the first fluid passage 102a of the valve body 102 defines an inlet port 102l adapted to facilitate entry of fluid (oil) from the end cover 108 to the valve body 102 through the first opening 106a of the directional control valve 106, and an outlet port 102m (as shown in fig. 3) adapted to facilitate exit of fluid from the valve body 102 to the control valve (not shown). The inlet port 102l of the first fluid passage 102a is provided in fluid communication with the outlet port 102m of the first fluid passage 102a. In an embodiment, the second fluid passage 102b of the valve body 102 defines a first inlet port 102n adapted to facilitate entry of fluid from the system safety valve 110 to the valve body 102 through the second opening 106b of the directional control valve 106, a second inlet port 102o adapted to facilitate entry of fluid from the third opening 106c of the directional control valve 106 to the valve body 102, and an outlet port 102p adapted to facilitate exit of fluid from the valve body 102 to the tank (not shown). The first inlet port 102n and the second inlet port 102o of the second fluid passage 102b are provided in fluid communication with the outlet port 102p of the second fluid passage 102b. The second fluid passage 102b of the valve body 102 is provided in fluid communication with the cylinder safety valve 104 through the cylinder safety valve receiving portion 102f of the valve body 102. The third fluid passage 102c defines an inlet port 102q (as shown in fig. 3) adapted to facilitate entry of fluid from the control valve (not shown) to the valve body 102 and thereafter the fluid from the third fluid passage 102c flows to isolator valve 116 through the check valve 112. The third fluid passage 102c of the valve body 102 is provided in fluid communication with the control valve (not shown), the check valve 112 and the isolator valve 116. The fourth fluid passage 102d defines an outlet port 102r (as shown in fig. 3) adapted to facilitate exit of fluid from the speed response valve 114 to the control valve (not shown) and thereafter the fluid from the control valve (not shown) flows to the tank (not shown). The cylinder port 102e of the valve body 102 is used to facilitate at least one of entry of fluid from the hydraulic cylinder (not shown) to the isolator valve 116 through the valve body 102, and exit of fluid from the isolator valve 116 to the hydraulic cylinder (not shown) through the valve body 102 during the lifting condition of the three point hitch (not shown). The cylinder safety valve receiving portion 102f of the valve body 102 is adapted to receive a portion of the cylinder safety valve 104. The cylinder safety valve receiving portion 102f of the valve body 102 is provided in fluid communication with the cylinder port 102e and the isolator valve 116 in parallel. The cylinder safety vale receiving portion 102f of the valve body 102 is provided in fluid communication with the outlet port 102p of the second fluid passage 102b of the valve body 102. The check valve receiving portion 102g of the valve body 102 is adapted to receive a portion of the check valve 112. The speed response valve receiving portion 102h of the valve body 102 is adapted to receive a portion of the speed response valve 114. The isolator valve receiving portion 102i of the valve body 102 is adapted to receive a portion of the isolator valve 116. The plurality of openings 102j is adapted to receive fasteners (not shown) therein to removably connect the valve body 102 to a hydraulic lift housing (not shown) thereby removably mounting the integrated control valve assembly 100 to the hydraulic lift housing (not shown). The plurality of cavities 102k of the valve body 102 is used to receive fasteners (not shown) therein to removably connect the end cover 108 and/or directional control valve 106 to the valve body 102.
[0023] In an embodiment, the cylinder safety valve 104 is used to regulate or limit a pressure in the hydraulic cylinder (not shown) thereby protecting the hydraulic cylinder (not shown) from high pressure spikes by discharging or bypassing the fluid received from the hydraulic cylinder (not shown) to the tank (not shown) when the pressure in the hydraulic cylinder (not shown) exceeds preset relief pressure of the cylinder safety valve 104. The cylinder safety valve 104 is connected to the valve body 102. The cylinder safety valve 104 is provided in fluid communication with the hydraulic cylinder (not shown) and the tank (not shown) through the cylinder port 102e of the valve body 102 and the outlet port 102p of the second fluid passage 102b of the valve body 102 respectively. A portion of the cylinder safety valve 104 is received by the cylinder safety valve receiving portion 102f of the valve body 102. In an embodiment, a horizontal plane of the cylinder safety valve 104 is substantially co-planar to a longitudinal plane of the valve body 102 thereby restricting accumulation of contaminants in the cylinder safety valve 104. A portion of the cylinder safety valve 104 is disposed external to the valve body 102 thereby facilitating easier servicing/repair process.
[0024] FIG. 5 depicts a perspective view of a directional control valve 106 of the integrated control valve assembly 100, according to an embodiment of the invention as disclosed herein. In an embodiment, the directional control valve 106 is used to change the direction of flow of the fluid (oil) in the hydraulic system (not shown). The directional control valve 106 is connected to the valve body 102. The directional control valve 106 includes a first opening 106a, a second opening 106b, a third opening 106c, a plurality of fourth openings 106d and may include other standard elements as present in standard directional control valve. The first opening 106a of the directional control valve 106 is provided in fluid communication with the end cover 108 therein to allow the fluid from the end cover 108 to flow to the inlet port 102l of the first fluid passage 102a of the valve body 102 and thereafter, the fluid from the first fluid passage 102a of the valve body 102 flows to the control valve (not shown) through the outlet port 102m of the first fluid passage 102a of the valve body 102. The second opening 106b of the directional control valve 106 is provided in fluid communication with the system safety valve 110 through the second outlet port 108c of the end cover 108 therein to allow the fluid from the system safety valve 110 to flow to the first inlet port 102n of the second fluid passage 102b of the valve body 102 and thereafter the fluid from the second fluid passage 102b of the valve body 102 flows to the tank (not shown) through the outlet port 102p of the second fluid passage 102b of the valve body 102. The third opening 106b of the directional control valve 106 is provided in fluid communication with the second inlet port 102o of the second passage 102b of the valve body 102 therein to allow the fluid from the directional control valve 106 to flow to the second fluid passage 102b of the valve body 102 and thereafter the fluid from the second fluid passage 102b of the valve body 102 flows to the tank (not shown) through the outlet port 102p of the second fluid passage 102b of the valve body 102. The plurality of fourth openings 106d of the directional control valve 106 is used to receive fasteners (not shown) therein to removably connect the directional control valve 106 to the valve body 102. The directional control valve 106 is provided in fluid communication with the system safety valve 110 through the end cover 108. The directional control valve is provided in fluid communication with the control valve (not shown) and the tank (not shown) through the valve body 102. In one embodiment, the directional control valve 106 is not assembled to the valve body 102 during a predefined condition i.e., the end cover 108 is directly connected to the valve body 102 without the directional control valve 106.
[0025] FIG. 8 depicts another perspective view of an end cover 108 of the integrated control valve assembly 100, according to an embodiment of the invention as disclosed herein. In an embodiment, the end cover 108 is used for connecting the system safety valve 110 to the valve body 102 and also to provide the fluid from the pump (not shown) to the directional control valve 106, the valve body 102, the control valve (not shown) and the tank (not shown). In one embodiment, the end cover 108 is connected to the valve body 102 through the directional control valve 106. In another embodiment, the end cover 108 is directly connected to the valve body 102 (as shown in fig. 9) during the predefined condition (integrated control valve assembly 100 without directional control valve 106 condition). In an embodiment, the end cover 108 includes an inlet port 108a (as shown in fig. 3), a first outlet port 108b, a second outlet port 108c, a system safety valve receiving portion 108d (as shown in fig. 7), a plurality of openings 108e and at least one fluid passage (not shown). The inlet port 108a of the end cover 108 is used to facilitate entry of fluid (oil) from the pump (not shown) to the end cover 108 and thereafter the fluid flows to the fluid passage (not shown) of the end cover 108. The first outlet port 108b of the end cover 108 is used to facilitate exit of fluid from the end cover 108 to the inlet port 102l of the first fluid passage 102a of the valve body 102 through the first opening 106a of the directional control valve 106. The second outlet port 108c of the end cover 108 is used to facilitate exit of fluid from the system safety valve 110 to the first inlet port 102n of the second fluid passage 102b of the valve body 102 through the second opening 106b of the directional control valve 106. The system safety valve receiving portion 108d of the end cover 108 is used to receive a portion of the system safety valve 110. In one embodiment, the plurality of openings 108e of the end cover 108 is used to receive fasteners (not shown) therein to removably connect the end cover 108 to the valve body 102 through the directional control valve 106. In another embodiment, the plurality of openings 108e of the end cover 108 is used to receive fasteners (not shown) therein to removably connect the end cover 108 to the valve body 102. The fluid passage (not shown) of the end cover 108 is provided in fluid communication with the system safety valve 110, the inlet port 108a, the first outlet port 108b and the second outlet port 108c. The end cover 108 is provided in fluid communication with the system safety valve 110, the directional control valve 106, the valve body 102, the control valve (not shown) and the tank (not shown).
[0026] In an embodiment, the system safety valve 110 is used to regulate or limit the pressure in at least one of the hydraulic system (not shown), the directional control valve 106 and the pump (not shown) thereby protecting at least one of the hydraulic system (not shown), the directional valve 106 and the pump (not shown) from high pressure spikes by discharging or bypassing the fluid to the tank (not shown) when the pressure in at least one of the hydraulic system (not shown), the directional control valve 106 and the pump (not shown) exceeds preset relief pressure of the system safety valve 110. The system safety valve 110 is connected to the end cover 108. A portion of the system safety valve 110 is received by the system safety valve receiving portion 108d of the end cover 108. In an embodiment, a horizontal plane of the system safety valve 110 is substantially co-planar to a horizontal plane of the end cover 108 thereby restricting the accumulation of contaminants in the system safety valve 110. A portion of the system safety valve 110 is disposed external to the end cover 108 thereby facilitating easier servicing or repair process. The system safety valve 110 is provided in fluid communication with the end cover 108, the directional control valve 106, the valve body 102 and the tank (not shown).
[0027] In an embodiment, the check valve 112 is used to allow the flow of fluid in one direction. The check valve 112 facilitates the flow of fluid from the control valve (not shown) to the isolator valve 116 through the third fluid passage 102c of the valve body 102 and restricts the flow of fluid from the isolator valve 116 to the control valve (not shown). A portion of the check valve 112 is received by the check valve receiving portion 102g of the valve body 102. The check valve 112 is provided in fluid communication with the control valve (not shown) and the isolator valve 116.
[0028] In an embodiment, the speed response valve 114 is used to control the quantity of fluid passing therethrough. The speed response valve 114 is provided in fluid communication with control valve (not shown) through the outlet port 102r of fourth fluid passage 102d of the valve body 102. The speed response valve 114 is provided in fluid communication with the isolator valve 116 and the control valve (not shown). A portion of the speed response valve 114 is received by the speed response valve receiving portion 102h of the valve body 102.
[0029] In an embodiment, the isolator valve 116 is used to control the quantity of flow of the fluid passing therethrough and isolates the flow of fluid in closed position. The isolator valve 116 is provided in fluid communication with the check valve 112. The isolator valve 116 is provided in fluid communication with the speed response valve 114. The isolator valve 116 is provided in fluid communication with the hydraulic cylinder (not shown) through the cylinder port 102e of the valve body 102. A portion of the isolator valve 116 is received by the isolator valve receiving portion 102i of the valve body 102. The isolator valve 116 is provided with a lock.
[0030] The control valve (not shown) controls or regulates the flow of the fluid (oil) to the hydraulic cylinder (not shown) to lift and/or lower a three point hitch (not shown) and thereby lifting and/or lowering an implement (not shown) connected to the three point hitch (not shown). The hydraulic cylinder (not shown) is used to lift and lower the three point hitch (not shown) and thereby lifting and lowering the implement (not shown) connected to the three point hitch (not shown).
[0031] The pump (not shown) is used for supplying the fluid (oil) to the integrated control valve assembly 100, the control valve (not shown) and other standard elements as presents in standard vehicle hydraulic system. The tank (not shown) is used for collecting the fluid (oil).
[0032] The flow of fluid (oil) in the hydraulic system (not shown) during the neutral condition of the three point hitch (not shown) is as follows. The fluid from the pump (not shown) flows to the inlet port 108a of the end cover 108 and the fluid flows to the fluid passage (not shown) of the end cover 108. Thereafter, the fluid from the fluid passage (not shown) flows to the first outlet port 108b of the end cover 108 and the system safety valve 110. Thereafter, the fluid from the first outlet port 108b of the end cover 108 flows to the inlet port 102l of the first fluid passage 102a of the valve body 102 through the first opening 106a of the directional control valve 106, and the fluid from the first fluid passage 102a of the valve body 102 flows to the outlet port 102m of the first fluid passage 102a of the valve body 102. Thereafter, the fluid from the outlet port 102m of the first fluid passage 102a of the valve body 102 flows to the control valve (not shown). Thereafter, the fluid from the control valve (not shown) flows the tank (not shown).
[0033] The flow of fluid in the hydraulic system (not shown) during the lifting condition of the three point hitch (not shown) is as follows. The fluid from the pump (not shown) flows to the inlet port 108a of the end cover 108 and the fluid flows to the fluid passage (not shown) of the end cover 108. Thereafter, the fluid from the fluid passage (not shown) flows to the first outlet port 108b of the end cover 108 and the system safety valve 110. Thereafter, the fluid from the first outlet port 108b of the end cover 108 flows to the inlet port 102l of the first fluid passage 102a of the valve body 102 through the first opening 106a of the directional control valve 106, and the fluid from the first fluid passage 102a of the valve body 102 flows to the outlet port 102m of the first fluid passage 102a of the valve body 102. Thereafter, the fluid from the outlet port 102m of the first fluid passage 102a of the valve body 102 flows to the control valve (not shown). Thereafter, the fluid from the control valve (not shown) flows to the inlet port 102q of the third fluid passage 102c of the valve body 102, and the fluid flows to the check valve 112 through the third fluid passage 102c of the valve body 102. Thereafter, the fluid from the check valve 112 flows to the isolator valve 116 through the third fluid passage 102c of the valve body 102. Thereafter, the fluid from the isolator valve 116 flows to the hydraulic cylinder (not shown) through the cylinder port 102e of the valve body 102.
[0034] The flow of fluid in the hydraulic system (not shown) during the lowering condition of the three point hitch (not shown) is as follows. The fluid from the pump (not shown) flows to the inlet port 108a of the end cover 108 and the fluid flows to the fluid passage (not shown) of the end cover 108. Thereafter, the fluid from the fluid passage (not shown) flows to the first outlet port 108b of the end cover 108 and the system safety valve 110. Thereafter, the fluid from the first outlet port 108b of the end cover 108 flows to the inlet port 102l of the first fluid passage 102a of the valve body 102 through the first opening 106a of the directional control valve 106, and the fluid from the first fluid passage 102a of the valve body 102 flows to the outlet port 102m of the first fluid passage 102a of the valve body 102. Thereafter, the fluid from the outlet port 102m of the first fluid passage 102a of the valve body 102 flows to the control valve (not shown) and the fluid from the control valve (not shown) flows to the tank (not shown). The fluid from the hydraulic cylinder (not shown) flows to the cylinder port 102e of the valve body 102, and the fluid flow to the isolator valve 116. Thereafter, the fluid from the isolator valve 116 flows to the speed response valve 114. Thereafter the fluid from the speed response valve 114 flows to the control valve (not shown) through the outlet port 102r of fourth fluid passage 102d of the valve body 102. Thereafter, the fluid from the control valve (not shown) flows to the tank (not shown).
[0035] In the aforementioned integrated control valve assembly 100, the end cover 108 is connected to the valve body 102 through the directional control valve 106 (integrated control valve assembly 100 with directional control valve 106 condition). The end cover 106 is directly connected to the valve body 102 during the predefined condition, where the predefined condition is integrated control valve assembly 100 without directional control valve 106 condition (as shown in fig. 9). Therefore, a modular and integrated control valve assembly 100 is provided for a hydraulic system of a vehicle.
[0036] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
,CLAIMS:CLAIMS
We claim,
1. An integrated control valve assembly 100 for a hydraulic system of a vehicle, said integrated control valve assembly 100 comprising:
a valve body 102;
a cylinder safety valve 104 adapted to be connected to said valve body 102, said cylinder safety valve 104 adapted to protect a hydraulic cylinder of the hydraulic system from predefined pressure;
at least one directional control valve 106 adapted to be connected to said valve body 102, said directional control valve 106 defining a first opening 106a, a second opening 106b and the third opening 106c;
an end cover 108 adapted to be connected to said valve body 102 through said directional control valve 106; and
a system safety valve 110 adapted to be connected to said end cover 108, said system safety valve 110 adapted to protect at least one of the hydraulic system, said directional control valve 106 and a pump from predefined pressure,
wherein
said valve body 102 having a first fluid passage 102a defining an inlet port 102l adapted to facilitate entry of fluid from said end cover 108 to said valve body 102 through the first opening 106a of said directional control valve 106, and an outlet port 102m adapted to facilitate exit of fluid from said valve body 102 to a control valve; and a second fluid passage 102b defining a first inlet port 102n adapted to facilitate entry of fluid from said system safety valve 110 to said valve body 102 through the second opening 106b of said directional control valve 106, a second inlet port 102o adapted to facilitate entry of fluid from the third opening 106c of said directional control valve 106 to said valve body 102, and an outlet port 102p adapted to facilitate exit of fluid from said valve body 102 to a tank of the hydraulic system; and
said end cover 108 defining an inlet port 108a adapted to facilitate entry of fluid from the pump to said end cover 108, a first outlet port 108b adapted to facilitate exit of fluid from said end cover 108 to the inlet port 102l of said valve body 102 through the first opening 106a of said directional control valve 106, and a second outlet port 108c adapted to facilitate exit of fluid from said system safety valve 110 to the first inlet port 102n of the second fluid passage 102b of said valve body 102 through the second opening 106b of said directional control valve 106.

2. The integrated control valve assembly 100 as claimed in claim 1, wherein a horizontal plane of said cylinder safety valve 104 is substantially co-planar to a horizontal plane of said valve body 102 thereby restricting accumulation of contaminants in said cylinder safety valve 104.

3. The integrated control valve assembly 100 as claimed in claim 1, wherein a horizontal plane of said system safety valve 108 is substantially co-planar to a horizontal plane of said end cover 108 thereby restricting accumulation of contaminants in said system safety valve 108.

4. The integrated control valve assembly 100 as claimed in claim 1, wherein the fluid is at least oil.

5. The integrated control valve assembly 100 as claimed in claim 1, further comprising a check valve 112 adapted to be connected to said valve body 102.

6. The integrated control valve assembly 100 as claimed in claim 1, further comprising a speed response valve 114 adapted to be connected to said valve body 102.

7. The integrated control valve assembly 100 as claimed in claim 1, further comprising an isolator valve 116 adapted to be connected to said valve body 102.

8. An integrated control valve assembly 100 for a hydraulic system of a vehicle, said integrated control valve assembly 100 comprising:
a valve body 102;
a cylinder safety valve 104 adapted to be connected to said valve body 102, said cylinder safety valve 104 adapted to protect a hydraulic cylinder of the hydraulic system from predefined pressure;
an end cover 108 adapted to be connected to said valve body 102, said end cover 108 defining an inlet port 108a adapted to facilitate entry of fluid from a pump of the hydraulic system to said end cover 108, a first outlet port 108b and second outlet port 108c; and
a system safety valve 110 adapted to be connected to said end cover 108, said system safety valve 108 adapted to protect at least one of the hydraulic system and the pump from predefined pressure,
wherein
said valve body 102 having a first fluid passage 102a defining an inlet port 102l adapted to facilitate entry of fluid from the first outlet port 108b of said end cover 108 to said valve body 102, and an outlet port 102m adapted to facilitate exit of fluid from said valve body 102 to a control valve; and a second fluid passage 102b defining a first inlet port 102n adapted to facilitate entry of fluid from said system safety valve 110 to said valve body 102 through the second outlet port 108c of said end cover 108, a second inlet port 102o adapted to facilitate entry of fluid from said end cover 108 to said valve body 102, and an outlet port 102p adapted to facilitate exit of fluid from said valve body 102 to a tank of the hydraulic system.

9. The integrated control valve assembly as claimed in claim 8, wherein said valve body 102 defines a cylinder safety valve receiving portion 102f adapted to receive a portion of said cylinder safety valve 104.

10. The integrated control valve assembly as claimed in claim 8, wherein said end cover 108 defines a system safety valve receiving portion 108d adapted to receive a portion of said system safety valve 110.