Support for valve levers of internal combustion engine valve drive

FIELD: engines and pumps.

SUBSTANCE: valve lever of internal combustion engine valve drive comprises a lever bracket (8) on which an axis (6) is located. The lever (2), (3) is rotatably mounted on the axis (6) with its hole (4), (5). The lever (2), (3) is held by axial fixation of the position. The axial fixation of the position is provided by the guiding connection in the form of a joint of an element (9), (10) engagement - jointed element (11), (12) between the bracket (8) and the lever (2), (3). The engagement element (9), (10) oriented transversely to the axial direction enters rotatably into the mating element (11), (12) with axial lateral support. A method for mounting the support is disclosed.

EFFECT: reduction of the number of parts and mounting space with axial fixation of the lever position and increasing reliability of operation.

11 cl, 4 dwg

 



 

Same patents:

FIELD: engines and pumps.

SUBSTANCE: self-adaptive hydraulic system with variable timing phases is intended for diesel engine 1 electronic control unit. Oil pump 7 connected with pressure control reverse valve 8 is fitted at engine drive output shaft 6. Engine main oil duct 4 communicates with oil pump 7 via oil pump inlet tube 5. Pressure control reverse valve 8 communicates with oil duct 10 and oil return tube 9. Oil duct 10 is connected with oil feed main pipe 11. Motor oil is the system working medium. Oil pump inlet tube 5 sucks oil from engine main oil duct 4. Oil pump 7 is communicated with engine output shaft 1. Pressure control reverse valve 8 adjusts pressurised oil delivered by oil pump 7 to working pressure and changes oil flow direction to change over the system working mode. Oil feed main tube 11, oil duct 10 and engine cylinders are communicated via self-adaptive pusher length variator. Oil return tube 9 is communicated with engine oil-catch tank 3. Said self-adaptive pusher length variator is composed of self-adaptive oil duct changeover mechanism of slide valve type including, at least, base, bottom end plug, piston, rocker ball pin, pin key, inner slide valve and spring. Said base is arranged at the engine cylinder head. Bottom end plug is fitted in said base. Rocker ball pin is connected with engine valve rocker. Rocker ball pin is pressed against piston top end by pin key. Aforesaid base has oil-conducting hole. Bottom end plug is furnished with oil-conducting hole, oil return hole and oil return channel of said bottom end plug. Inner slide valve is pressed to piston bottom end by the spring. Oil main feed tube represents a tube to feed oil from main oil duct to engine cylinders via oil feed pipes. Invention covers self-adaptive hydraulic system with variable timing phases and control thereof.

EFFECT: decreased harmful emissions.

8 cl, 6 dwg

FIELD: engines and pumps.

SUBSTANCE: invention may be used in internal combustion engines (ICE). A gas distributing mechanism of an ICE comprises a distributing shaft (21) with cams (20), interacting with some of arms of yokes (14) and (15), hingedly installed on axes (16), placed in a head (1) of a cylinder block. Yokes (14) and (15) with their other arms contact with rods (8) and (9) of the valves (6) and (7) relative to the head (1) of the cylinder block. Axes (16) of yokes are made of an elastic material and in sections of their contact with yokes and the head of the block are equipped with splints (17), which are mutually connected with responsive splints cut in yokes and the head. Rods (8) and (9) of the valves on their ends have ledges of spherical shape that produce kinematic pairs with one of arms of yokes via bodies of cup-like shape with locks that are rigidly fixed on the latter.

EFFECT: simplified design of a gas distributing mechanism due to elimination of helical springs of valves.

4 dwg

FIELD: engines and pumps.

SUBSTANCE: system for actuation of engine exhaust valve for engine braking includes rocker axle 101, engine braking rocker 100, baffle 300 of valves, sliding pin 310, cam 200 and spring 124. Rocker axle 110 has inlet passage 112 for control fluid. Engine braking rocker 100 is fitted on rocker axle 110 and has central bore arranged around axle 110, fluid passage communicating central bore with control valve 130, and fluid passage 105 communicating control valve with drive piston assy 120. Valve baffle 300 extends between engine first and second exhaust valves 400. Sliding pin 310 is located in said baffle 300 and contacts with engine first exhaust valve 400. Drive piston assy 140 comes in contact with sliding pin 310. Cam 200 serves to transfer engine brake drive motion to rocker 100. Spring 124 brings rocker 100 in contact with cam 200. Invention covers also engine valve actuation.

EFFECT: higher efficiency of braking.

13 cl, 8 dwg

FIELD: engines and pumps.

SUBSTANCE: invention may be used in ICE to change from normal operating conditions 20 to overrunning 10. Proposed device comprises actuator with braking piston integrated in exhaust valve mechanism, gap adjustment mechanism and adjustment fluid feed controller. Actuator has idle and working positions. In idle, braking piston is pulled in to make a gap between exhaust valve and cam to get disengaged from normal operating conditions. In operating conditions, braking piston extends to open exhaust vale for overrunning. Aforesaid gap adjustment mechanism adjusts aforesaid gap. Adjusting fluid feed controller serves to displace aforesaid actuator between idle and operating conditions. Invention covers method of changing from normal operating conditions to overrunning.

EFFECT: faster operation, simplified design and higher reliability.

20 cl, 68 dwg

FIELD: engines and pumps.

SUBSTANCE: gas-distributing mechanism of internal combustion engine consists of distribution shaft with cams, levers of valve actuator, and valves. Cams are interconnected with support plates of valve springs by means of levers of valve actuator. Valve actuator levers are made from elastic material. Bending stiffness of levers is higher than total linear stiffness of external and internal helical springs.

EFFECT: improving operating reliability of gas-distributing mechanism of internal combustion engine.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: actuating device of decompression motor brake in internal combustion engine includes cam shaft (7) and one or more in-line cylinders each of which is equipped with one or more outlet valves (2.1, 2.2). Valve levers (3.1, 3.2) and hydraulic pushers (5.1, 5.2) are connected to outlet valves. Valve levers (3.1, 3.2) include common axis (4) for each cylinder. There is at least one additional valve lever (9) for each cylinder, which turns about common axis (4) and provided with possibility of being engaged with the corresponding additional cam (7) located on cam shaft (7). At least one actuator system for additional valve lever (9) for each cylinder has the possibility of moving the valve lever (9) between the first position in which valve lever (9) is not engaged with additional cam (10), thus, determining the deactivated state of motor brake, and the second position in which valve lever (9) is engaged with additional cam (10), thus determining the activated state of motor brake. Internal combustion engine with actuating device of decompression motor brake is described.

EFFECT: easier manufacture and improved reliability.

12 cl, 12 dwg

The invention relates to mechanical engineering and can be used in the timing mechanisms of internal combustion engines

The invention relates to a piston machine, in particular to the rocker valve

The invention relates to mechanical engineering, in particular to engine, and can be used in the design and development of internal combustion engines (ice) used as the power unit for small equipment

The valve mechanism // 2117776

FIELD: engines and pumps.

SUBSTANCE: actuating device of decompression motor brake in internal combustion engine includes cam shaft (7) and one or more in-line cylinders each of which is equipped with one or more outlet valves (2.1, 2.2). Valve levers (3.1, 3.2) and hydraulic pushers (5.1, 5.2) are connected to outlet valves. Valve levers (3.1, 3.2) include common axis (4) for each cylinder. There is at least one additional valve lever (9) for each cylinder, which turns about common axis (4) and provided with possibility of being engaged with the corresponding additional cam (7) located on cam shaft (7). At least one actuator system for additional valve lever (9) for each cylinder has the possibility of moving the valve lever (9) between the first position in which valve lever (9) is not engaged with additional cam (10), thus, determining the deactivated state of motor brake, and the second position in which valve lever (9) is engaged with additional cam (10), thus determining the activated state of motor brake. Internal combustion engine with actuating device of decompression motor brake is described.

EFFECT: easier manufacture and improved reliability.

12 cl, 12 dwg

FIELD: engines and pumps.

SUBSTANCE: gas-distributing mechanism of internal combustion engine consists of distribution shaft with cams, levers of valve actuator, and valves. Cams are interconnected with support plates of valve springs by means of levers of valve actuator. Valve actuator levers are made from elastic material. Bending stiffness of levers is higher than total linear stiffness of external and internal helical springs.

EFFECT: improving operating reliability of gas-distributing mechanism of internal combustion engine.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: invention may be used in ICE to change from normal operating conditions 20 to overrunning 10. Proposed device comprises actuator with braking piston integrated in exhaust valve mechanism, gap adjustment mechanism and adjustment fluid feed controller. Actuator has idle and working positions. In idle, braking piston is pulled in to make a gap between exhaust valve and cam to get disengaged from normal operating conditions. In operating conditions, braking piston extends to open exhaust vale for overrunning. Aforesaid gap adjustment mechanism adjusts aforesaid gap. Adjusting fluid feed controller serves to displace aforesaid actuator between idle and operating conditions. Invention covers method of changing from normal operating conditions to overrunning.

EFFECT: faster operation, simplified design and higher reliability.

20 cl, 68 dwg

FIELD: engines and pumps.

SUBSTANCE: system for actuation of engine exhaust valve for engine braking includes rocker axle 101, engine braking rocker 100, baffle 300 of valves, sliding pin 310, cam 200 and spring 124. Rocker axle 110 has inlet passage 112 for control fluid. Engine braking rocker 100 is fitted on rocker axle 110 and has central bore arranged around axle 110, fluid passage communicating central bore with control valve 130, and fluid passage 105 communicating control valve with drive piston assy 120. Valve baffle 300 extends between engine first and second exhaust valves 400. Sliding pin 310 is located in said baffle 300 and contacts with engine first exhaust valve 400. Drive piston assy 140 comes in contact with sliding pin 310. Cam 200 serves to transfer engine brake drive motion to rocker 100. Spring 124 brings rocker 100 in contact with cam 200. Invention covers also engine valve actuation.

EFFECT: higher efficiency of braking.

13 cl, 8 dwg

FIELD: engines and pumps.

SUBSTANCE: invention may be used in internal combustion engines (ICE). A gas distributing mechanism of an ICE comprises a distributing shaft (21) with cams (20), interacting with some of arms of yokes (14) and (15), hingedly installed on axes (16), placed in a head (1) of a cylinder block. Yokes (14) and (15) with their other arms contact with rods (8) and (9) of the valves (6) and (7) relative to the head (1) of the cylinder block. Axes (16) of yokes are made of an elastic material and in sections of their contact with yokes and the head of the block are equipped with splints (17), which are mutually connected with responsive splints cut in yokes and the head. Rods (8) and (9) of the valves on their ends have ledges of spherical shape that produce kinematic pairs with one of arms of yokes via bodies of cup-like shape with locks that are rigidly fixed on the latter.

EFFECT: simplified design of a gas distributing mechanism due to elimination of helical springs of valves.

4 dwg

FIELD: engines and pumps.

SUBSTANCE: self-adaptive hydraulic system with variable timing phases is intended for diesel engine 1 electronic control unit. Oil pump 7 connected with pressure control reverse valve 8 is fitted at engine drive output shaft 6. Engine main oil duct 4 communicates with oil pump 7 via oil pump inlet tube 5. Pressure control reverse valve 8 communicates with oil duct 10 and oil return tube 9. Oil duct 10 is connected with oil feed main pipe 11. Motor oil is the system working medium. Oil pump inlet tube 5 sucks oil from engine main oil duct 4. Oil pump 7 is communicated with engine output shaft 1. Pressure control reverse valve 8 adjusts pressurised oil delivered by oil pump 7 to working pressure and changes oil flow direction to change over the system working mode. Oil feed main tube 11, oil duct 10 and engine cylinders are communicated via self-adaptive pusher length variator. Oil return tube 9 is communicated with engine oil-catch tank 3. Said self-adaptive pusher length variator is composed of self-adaptive oil duct changeover mechanism of slide valve type including, at least, base, bottom end plug, piston, rocker ball pin, pin key, inner slide valve and spring. Said base is arranged at the engine cylinder head. Bottom end plug is fitted in said base. Rocker ball pin is connected with engine valve rocker. Rocker ball pin is pressed against piston top end by pin key. Aforesaid base has oil-conducting hole. Bottom end plug is furnished with oil-conducting hole, oil return hole and oil return channel of said bottom end plug. Inner slide valve is pressed to piston bottom end by the spring. Oil main feed tube represents a tube to feed oil from main oil duct to engine cylinders via oil feed pipes. Invention covers self-adaptive hydraulic system with variable timing phases and control thereof.

EFFECT: decreased harmful emissions.

8 cl, 6 dwg

FIELD: engines and pumps.

SUBSTANCE: invention can be used in internal combustion engines. The valve control device (10) of internal combustion engine for controlling the operations of opening and closing the engine valve (12) contains the central yoke (14), the first neighbouring yoke (18), the second neighbouring yoke (20), the set of cams and the double synchronising pin (38). The central yoke (14) is installed on the axis (16) of yokes. The rotary movement of the central yoke (14) results in rectilinear movement to the valve (12) for its opening and closing. The first neighbouring yoke (18) is installed with a possibility of rotation on the axis (16) of yokes from the first side of the central yoke (14). The second neighbouring yoke (20) is installed with a possibility of rotation on the axis (16) of yokes from the second opposite side of the central yoke (14). The set of cams is rotated synchronously with the engine rotation. The set of cams includes the first cam (24) and the second cam (26). The first cam (24) is intended for ensuring rotation of the first neighbouring yoke (18) around the axis (16) of yokes according to the first cam (24) profile. The second cam (26) is intended for ensuring rotation of the second neighbouring yoke (20) around the axis (16) of yokes according to the second cam (26) profile. The double synchronising pin (38) is intended for selective synchronisation of the rotary movement of the central yoke (14) at least with one first neighbouring yoke (18) or with the second neighbouring yoke (20). The double synchronising pin (38) has the first state in which the rotary movement of the first neighbouring yoke (18) from the first cam (24) is transferred to the central yoke (14), the second state in which the rotary movement of the second neighbouring yoke (20) from the second cam (26) is transferred to the central yoke (14), and the third state in which the rotary movement is not transferred neither from the first neighbouring yoke (18), nor from the second neighbouring yoke (20). Options of valve control units and the method for synchronisation of yokes of the engine valve are described.

EFFECT: decrease of inertial mass of the system of yokes.

30 cl, 22 dwg

FIELD: machine building.

SUBSTANCE: invention can be use in valve rockers of internal combustion engines. The oscillating valve rocker (21) contains a rocker axle, first crank (23) and second crank (31). The first crank (23) has the first round hole (25), in which the rocker axle (21) is inserted, and first contact surface (29). The second crank (31) has the second round hole (33), in which the valve rocker axle is inserted, and second contact surface (35). The first and the second cranks (23) and (31) are installed with possibility of rotation on the valve rocker axle. The first hole (25) and second hole (33) are located coaxially. The first contact surface (29) and second contact surface (35) can touch each other, and can transfer force in direction that is transverse to the direction of axis of the valve rocker (21). The oscillating valve rocker (21) contains single follower of the distribution shaft on the first crank. Valve opening gear is described.

EFFECT: possibility of installation of the rocker of the drive for one of contact surfaces.

16 cl, 5 dwg

FIELD: engines.

SUBSTANCE: invention may be used in internal combustion engines. Valve control device is intended for, at least, one valve of internal combustion engine, in which movement of at least one cam (2) of distribution shaft (3) is transferred to rod (5) of valve (1) by means of transmission gear (4). Transmission gear (4) includes at least one transmission device (7) installed with possibility of rotation on axis (6). Transmission device (7) is made in the form of a rocker arm (10) or pull lever and is connected with distribution shaft (3) by means of contact element (8) located on transmission device (7). Contact surface (19) of the contact element (8) and peripheral surface (20) of cam (2) have at least on some sections curved and matching circuits in axial direction (21). Transmission device (7) is installed with possibility of axial movement on body (11) of axis (6). Invention discloses method of limiting axial movement of transmission device and internal combustion engine.

EFFECT: technical result consists in reduction of relative movement in axial direction of two contact parts of the valve control device relative to each other.

15 cl, 8 dwg

FIELD: engines and pumps.

SUBSTANCE: valve lever of internal combustion engine valve drive comprises a lever bracket (8) on which an axis (6) is located. The lever (2), (3) is rotatably mounted on the axis (6) with its hole (4), (5). The lever (2), (3) is held by axial fixation of the position. The axial fixation of the position is provided by the guiding connection in the form of a joint of an element (9), (10) engagement - jointed element (11), (12) between the bracket (8) and the lever (2), (3). The engagement element (9), (10) oriented transversely to the axial direction enters rotatably into the mating element (11), (12) with axial lateral support. A method for mounting the support is disclosed.

EFFECT: reduction of the number of parts and mounting space with axial fixation of the lever position and increasing reliability of operation.

11 cl, 4 dwg

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