7 results about "Hydraulic tappet" patented technology

The application provides an engine valve train detection method, a hydraulic tappet device and electronic equipment. The method comprises the following steps: collecting a first torque set of a flywheel end of an engine when a hydraulic tappet is installed in the valve train of the engine, wherein the first torque set comprises torques collected under multiple engine operating conditions; collecting a second torque set of the flywheel end of the engine when a hydraulic tappet device is installed in the valve train of the engine after the hydraulic tappet is removed, wherein the valve train of the engine stops running after the hydraulic tappet is removed, the hydraulic tappet device is used to block an oil passage hole of a cylinder head oil passage of the engine, and the second torque set comprises torques collected under multiple engine operating conditions; and obtaining a detection result representing friction loss of the valve train of the engine according to a difference between torques under the same engine operating condition in the first torque set and the second torque set. Thus, the problem that the friction loss of the valve train of an entity cannot be detected can be solved.

The present application belongs to the technical field of rocker arm detection, and discloses a rocker arm lubrication pressure measuring device and a working method thereof. The device comprises an oil feeder, a pressure sensor and a fixing assembly. The fixing assembly comprises a base and a clamp. The clamp is installed on the base and is crimped on the rocker arm. A hydraulic tappet is arranged on the base and abuts against one side of an oil injection port of the rocker arm. A fixing column is further arranged on the side of the base away from the oil injection port and abuts against the lower side of the rocker arm. An oil pipe is arranged in the hydraulic tappet. The oil pipe communicates the oil injection port and the oil feeder. The pressure sensor is arranged in the oil pipe and can detect the oil pressure in the oil pipe. The device solves the problem that the rocker arm needs to be installed in the engine for lubrication pressure detection, resulting in complicated disassembly and assembly steps and low detection efficiency.

This utility model discloses a positioning fixture for assembling a hydraulic rocker arm in an engine, relating to the field of monolithic hydraulic rocker arms. The positioning fixture includes a support frame with multiple claws on both sides. The process involves placing the rocker arm assembly fixture onto the cylinder head, inserting a hydraulic tappet into the tappet hole in the cylinder head, then inserting the monolithic rocker arm along the claw slots until it precisely contacts the valve tip. The intake and exhaust camshafts are then assembled and fixed, ensuring the intake and exhaust camshafts press firmly against the monolithic rocker arm without wobbling. The monolithic rocker arm is correctly seated. Finally, the rocker arm assembly fixture is removed. At this point, the pad surface of the monolithic rocker arm and the valve maintain a precise centerline fit, preventing misalignment or dislodgement. This avoids situations where visual inspection reveals poor stability and prolonged operating time.

This invention relates to a grinding machine and thread rolling process for machining cylindrical hydraulic tappet ball plugs, belonging to the field of ball plug machining technology. It includes a main body, a moving thread rolling plate fixed to one side of the moving module, a fixed thread rolling plate fixed to one side of the fixed module, a pressing component inside the moving seat, a force adjustment component inside the connecting block, a fixing component at the top of the fixing frame, and a clamping component inside the fixing component. This invention, through axial pressing from top to bottom by the connecting block, can lock the vertical axial freedom of the product blank, effectively counteracting the upward lifting force generated during the extrusion process of the moving and fixed thread rolling plates, preventing problems such as vertical movement of the product blank, ensuring that the product blank is tightly fitted to the contour working surface of the thread rolling plate throughout the entire process, ensuring uniform extrusion force. The downward stroke of the connecting block can be adjusted according to the length and specifications of the product blank, flexibly adapting to the machining of ball plugs of different models and lengths.

This utility model relates to the technical field of automotive ball joint fatigue testing devices, specifically a comprehensive fatigue testing device for automotive ball joints, comprising: a base plate with a frame and a base fixed to its top; a hydraulic tappet mechanism fixed to the surface of the frame; a sealing cover and an air conditioner movably mounted on the top of the base plate; a clamp provided on the top of the base plate; and a rod hole opened on the surface of the sealing cover, into which the hydraulic rod of the hydraulic tappet mechanism is movably inserted. The beneficial effect is that the interior of the sealing cover is sealed, and then the air conditioner is activated for cooling or heating, thereby regulating the temperature inside the sealing cover. Once the desired temperature is reached, the hydraulic rod of the hydraulic tappet mechanism can continue to extend, applying radial loading to the automotive ball joint under test, thus completing the test. By repeatedly adjusting the temperature inside the sealing cover and conducting multiple tests on the automotive ball joint, the fatigue strength of the automotive ball joint under various temperature conditions can be measured.

Air-intake-side and air-discharge-side first hydraulic lash adjusters (36, 37) are provided to a cylinder head (1) in an internal combustion engine. An oil original-pressure passage (45) is positioned at a width-direction central section of the cylinder head (1), the oil original-pressure passage (45) communicating with an oil reservoir part (46). A cam carrier internal passage (52) that passes through the interior of a cam carrier (2) is provided to the air-intake-side lash adjuster (36). Oil is supplied from the oil reservoir part (46) to a lash-adjuster mounting hole (38) via the cam carrier internal passage (52) and an air-intake-side oil passage (53).