61results about How to "Continuously variable" patented technology

The invention relates to the technical field of an internal combustion engine, in particular to a device for adjusting a lift of an intake valve of a supercharged engine. The device comprises an intake channel, an exhaust channel, a lower intake valve section, an exhaust valve, an upper intake valve section, a volumetric cavity, a moving body, a penetrating tube, a moving block, a connecting tube and a spring, wherein the moving body is arranged in the volumetric cavity and is contacted with the inner wall surface of the volumetric cavity in a sealing way, the penetrating tube is arranged in a way of penetrating the upper wall surface and the lower wall surface of the moving body, the moving block is arranged in the penetrating tube and is contacted with the inner wall surface of the penetrating tube in a sealing way, a plane is adopted by the lower end face of the moving block, a slope is adopted by the upper end face of the moving block, two ends of the connecting tube are respectively communicated with the left wall surfaces of an intake tube and the volumetric cavity, and the right wall surface of the moving body is connected with the right wall surface of the volumetric cavity through the spring. When the pressure in an exhaust tube of the engine is relatively high, the moving body can move rightwards, and the lift of the intake valve can be increased; and when the pressure in the exhaust tube of the engine is relatively low, the moving body can move leftwards, and the lift of the intake valve can be decreased. The device has the advantages of reasonable design and simple structure and is suitable for a variable valve lift system of the supercharged engine.

The invention discloses a variable-angle oblique impact test clamp for thin-wall pipe fittings. The variable-angle oblique impact test clamp is characterized by comprising a base, a rotatable oblique plate, a limited slip supporting block and a clamping frame, wherein double rows of inverted-T-shaped straight flute rails are arranged on the base, and the limited slip supporting block is arranged on the inverted-T-shaped straight flute rails; the base and the rotatable oblique plate are fixed through a pin roll and form a rotation pair between the rotatable oblique plate and the base; the other free end of the rotatable oblique plate is supported on the limited slip supporting block; a circular through slot is formed in the rotatable oblique plate; the center of the clamping frame is superposed with the center of the circular through slot; the clamping frame is fixed on the rotatable oblique plate; and a first wedge block and a second wedge block are arranged in the clamping frame. The clamp design method disclosed by the invention can realize stable and reliable clamping, in an oblique impact test, of thin-wall pipe fittings with different section shapes, so that section dimension variability and stress angle continuous variability can be realized in the test, and therefore, the problems such as a single test angle of a current test sample, a single section shape of the test pipe fittings, and the like are solved.

The invention relates to a paper folding type wheel with the variable width. The paper folding type wheel comprises a reducing wheel carrier and a wheel shaft installed on the reducing wheel carrier.The reducing wheel carrier comprises a plurality of folding units sequentially connected end to end to form a ring. Each folding unit is provided with a first plane, a second plane, a third plane, a fourth plane, a fifth plane and a sixth plane; a first valley fold line is arranged between the first plane and the second plane and is symmetrically arranged by taking the first valley fold line as acenter; a first mountain fold line is arranged between the third plane and the fourth plane and is symmetrically arranged by taking the first mountain fold line as the center; a second valley fold line is arranged between the first plane and the third plane, a third valley fold line is arranged between the second plane and the fourth plane, the fifth plane and the sixth plane are symmetrically arranged with the first valley fold line as the center, and the fifth plane and the sixth plane are connected with the first plane and the second plane respectively. The paper folding type wheel with thevariable width can adjust the width of the variable-diameter wheel carrier, and belongs to the technical field of variable-width wheels and variable-diameter wheels.

The invention discloses a ratchet wheel type ball screw inerter with a variable inertial mass coefficient and capable of rotating bidirectionally. The ratchet wheel type ball screw inerter comprises a forward flywheel assembly and a reverse flywheel assembly. The forward flywheel assembly comprises a forward poking wheel, a forward flywheel disc and a forward unfolding mechanism, the forward poking wheel is fixedly arranged on a lead screw nut assembly in a sleeving mode, the forward flywheel disc and the forward poking wheel form a ratchet wheel structure, and the forward unfolding mechanism is arranged on the forward flywheel disc so as to change the turning radius of the forward flywheel disc. The reverse flywheel assembly comprises a reverse poking wheel, a reverse flywheel disc and a reverse unfolding mechanism, the reverse flywheel and the reverse poking wheel form a ratchet wheel structure, and the reverse unfolding mechanism is arranged on the reverse flywheel disc so as to change the turning radius of the reverse flywheel disc. Under the condition that the rotation direction of a flywheel is not changed, the impact caused by the change of the rotation direction of the flywheel when the inertia volume of a ball screw switches the movement direction is reduced. Meanwhile, on the premise that no extra device is added and no extra energy is utilized, continuous variability of the rotational inertia of the flywheel is achieved, and the flywheel is self-adaptive to different working conditions.

The invention discloses a variable inductor, which comprises a substrate, a core, an inductor body and a pair of electrodes of the inductor body, wherein the inductor body is printed on the substrate, the substrate is provided with a hole, and the core is inserted into the hole and moves along the length direction of the hole. Continuous variability of inductance of high-frequency microwave is realized by changing position of the core.

The invention discloses an air pressure difference value control type dislocation stress device, and belongs to the technical field of mechanical design. The device comprises an air inlet valve, control cavities, a rotating shaft, a rotating rod, a stretching rod, a spring, moving bodies and connecting pipes. Four cavities are formed in the rotating shaft, and four reinforced ribs are arranged on the middle segment of the air inlet valve; the four reinforced ribs on the middle segment of the air inlet valve are arranged in the four cavities of the rotating shaft; the lower wall face of the first moving body and the upper wall face of the second moving body are both provided with slope structures; one end of the first connecting is communicated with an upper cavity body of t he second control cavity, and the other end of the first connecting pipe is communicated with an exhaust pipe of an engine; and one end of the second connecting pipe is communicated with the upper cavity body of the second control cavity, and the other end of the second connecting pipe is communicated with a turbine exhaust pipe. According to the stress device, when the pressure in the control cavities is too high, the middle segment of the air inlet valve are rotated clockwise, the lifting range of the valve is increased, and the air inlet amount of the engine becomes large. The air pressure difference value control type dislocation stress device is reasonable in design, simple in structure and applicable to the design of an air inlet valve lift range variable system.

The invention discloses a pneumatic engine valve control mechanism, and belongs to the technical field of internal combustion engines. The pneumatic engine valve control mechanism comprises a lower intake valve section, a middle intake valve section, an upper intake valve section, a control body, a fixed body, through pipes, an elastic part, a rotating plate, a rotating shaft and a first connecting pipe, wherein the middle intake valve section penetrates through the rotating shaft; four cavities are formed in the rotating shaft; the middle intake valve section is provided with four ribs; the four ribs of the middle intake valve section are arranged in the four cavities of the rotating shaft respectively; a rotating block is connected with the wall surface of the top end of the second through pipe through the elastic part; the two ends of the first connecting pipe are communicated with the first through pipe and an intake pipe of an engine respectively; the two ends of the second through pipe are communicated with the second through pipe and an turbine exhaust pipe. According to the pneumatic engine valve control mechanism, when pressure in the first through pipe is higher, the middle intake valve section rotates clockwise, the valve lift is increased, and the air inflow of the engine is increased; the pneumatic engine valve control mechanism is reasonable in design, simple in structure and applicable to the design of an intake valve lift continuously variable system.

The invention discloses an air valve lifting device for an engine, the engine comprising the same, and an automobile comprising the same. The air valve lifting device comprises an air valve mechanism, a cam shaft mechanism, a swing arm mechanism and an actuating mechanism, wherein the top of the air valve mechanism is provided with a roller arm, the cam shaft mechanism is arranged above the air valve mechanism, the cam shaft mechanism comprises a cam, the swing arm mechanism is arranged between the roller arm and the cam shaft mechanism and is driven by the cam to swing around the swing arm rotary axis of the swing arm mechanism, the actuating mechanism is used for driving the swing arm mechanism to rotate around the regulating rotary axis of the actuating mechanism to continuously and changeably regulate the lift of the air valve mechanism, and the swing arm rotary axis is coincident with the regulating rotary axis. According to the air valve lifting device, different air valve lifts can be achieved according to requirements of different working conditions of the engine, and pump gas loss and mechanical loss in the low-speed load working condition are reduced. Meanwhile, continuation and changeability of the air valve lifts are achieved, and work efficiency of the engine is improved.

The invention belongs to the technical field of mechanical design and relates to a mechanical multidirectional movement mechanism comprising an intake valve, control cavities, a rotating shaft, a rotating rod, a stretching rod, springs, a moving body, moving plates and connecting pipes. Four cavities are arranged inside the rotating shaft, four ribs are arranged in the middle section of the intake valve, slope structures of the moving body, the first moving plate and the second moving plate are matched with one another, one end of the rotating rod is hinged to one end of the stretching rod, one end of the first connecting pipe is communicated with a lower cavity of the second control cavity, the other end of the first connecting pipe is communicated with an engine intake pipe, one end of the second connecting pipe is communicated with an upper cavity of the second control cavity, and the other end of the second connecting pipe is communicated with an turbine exhaust pipe. When pressure in the control cavities is high, the middle section of the intake valve rotates clockwise, valve lift is increased, and engine air intake is increased. The mechanism is rational in design, simple in structure and applicable to design of continuously variable intake valve lift systems.

The invention relates to a dual spring synchronous compression type mechanical system, which belongs to the technical field of mechanical design. The dual spring synchronous compression type mechanical system comprises an air inlet, an air outlet, an inlet valve lower section, an exhaust valve, an inlet valve upper section, a containing cavity, moving bodies, a penetrating tube, moving blocks, a connecting tube and springs, wherein the lower end surfaces of the first moving block and the second moving block are flat surfaces, the upper end surfaces of the first moving block and the second moving block are inclined surfaces, the left wall surface of the first moving body is connected with the left wall surface of the containing cavity through the first spring, and the right wall surface of the second moving body is connected with the right wall surface of the containing cavity through the second spring. When pressure in an inlet tube of an engine is higher, the first moving body is moved to the left, the second moving body is moved to the right, and the lift ranges of an inlet valve and the exhaust valve are increased. When the pressure in the inlet tube of the engine is lower, the first moving body is moved to the right, the second moving body is moved to the left, and the lift ranges of the inlet valve and the exhaust valve are reduced. The dual spring synchronous compression type mechanical system has the advantages of reasonable design and simple structure, and is suitable for an engine variable valve lift system.

The invention discloses a mechanical valve stroke regulating system and belongs to the technical field of mechanical design. The mechanical valve stroke regulating system comprises an intake valve, control cavities, a rotary shaft, a rotary rod, a stretching rod, a spring, a mobile object and a connection pipe. Four cavities are formed in the rotary shaft. Four ribs are arranged in the middle section of the intake valve and distributed in the four cavities of the rotary shaft respectively. One end of the rotary rod is hinged to one end of the stretching rod, and the other end of the stretching rod penetrates through the lower wall of the second control cavity and then is fixedly connected with the lower wall of the mobile object. One end of the connection pipe is communicated with a lower cavity of the second control cavity, and the other end of the connection pipe is communicated with an intake pipe of an engine. According to the mechanical valve stroke regulating system, when pressure in the lower cavity of the second control cavity is high, the middle section of the intake valve rotates clockwise, valve stroke is increased, and air inflow of the engine is increased. The mechanical valve stroke regulating system is reasonable in design, simple in structure and suitable for design of an intake valve stroke continuously variable system.

Provided is a mechanical force-balancing device, pertaining to the technical field of internal combustion engines. The mechanical force-balancing device comprises a lower segment of an intake valve, a middle segment of the intake valve, an upper segment of the intake valve, a control body, a fixing plate, an elastic part, a rotary plate, a rotary shaft and connecting pipes. The middle segment of the intake valve penetrates through the rotary shaft, the interior of which is provided with four cavities. The middle segment of the intake valve is provided with four ribbed bars which are respectively arranged in the four cavities of the rotary shaft. One end of a first connecting pipe is communicated with a right-side cavity of the control body. The other end of the first connecting pipe is communicated with an engine exhaust pipe. One end of a second connecting pipe is communicated with a left-side cavity of the control body. The other end of the second connecting pipe is communicated with a turbine exhaust pipe. In the mechanical force-balancing device, the middle segment of the intake valve rotates clockwise at high internal pressure of the control body so that the valve lift and air inflow of an engine increase. The mechanical force-balancing device is reasonable in design and simple in structure and is suitable for design of a continuous variable system of the lift of the intake valve.