36results about How to "Eliminate knocking" patented technology

Disclosed is a means to attenuate torsional vibration in a power unit transmission system generated by torque fluctuations in the engine in an automotive hybrid power unit, and thereby eliminate noise, such as chattering from the power transmission gears and muffled body noise, etc. Disclosed is a hybrid power unit control system for a hybrid power unit that is equipped with a first drive train, which is configured with a gear transmission mechanism linked to a first input shaft that transmits engine drive power via a first friction clutch; a second drive train, which is configured with a gear transmission mechanism linked to a second input shaft that transmits engine drive power via a second friction clutch; a motor generator, which is connected to said first input shaft or second input shaft; and a driven apparatus, which is driven by the drive power transmitted from the output shaft of the gear transmission mechanism of said first drive train or the output shaft of the gear transmission mechanism of said second drive train. Said motor generator is started as an electric power generator when fluctuation in the rotational speed of said engine, which is detected by a rotational speed sensor, exceeds a predetermined upper limit amplitude value, so that torque of opposite phase to said rotational speed fluctuation is applied to said engine with the same periodicity as said rotational speed fluctuation.

A method of releasing a work attachment from a coupler (2), wherein the work attachment is secured to the coupler via two pins held within two jaws (5, 7), the method including the steps of: (a) moving a jaw (7) to release a first pin (b) changing the orientation of the coupler (2) and work attachment relative to each other (c) moving the jaw (7) in the opposite direction to that in step (a); characterised by the step of: (d) moving the jaw (7) in the opposite direction to that in step (c) characterised in that the action of step (c) moves a safety link (17) to a release position, thereby allowing a locking portion (10) to release a second pin from a jaw in step (d).

The invention discloses a hinge and a household device with the same. The hinge comprises a first fixing part, a second fixing part, a transmission device and a buffer device, the transmission deviceis rotationally connected between a first position of the first fixing piece and the second fixing piece, and the buffer device is connected between a second position of the first fixing piece and thesecond fixing piece, and the first fixing piece rotates around the transmission device to a preset angle. According to the hinge and the household device with the hinge, when the hinge rotates aroundthe transmission device by a preset angle through the first fixing piece, the transmission device is in sliding connection with the buffer device, so that the buffer device generates a buffer effect,and the rotating speed of the hinge is reduced.

The two-stroke working method of two-stroke engine includes the following steps: a. the first stroke is expansion stroke, including air admission, closing admission valve, ignition, combustion, piston movement to move screw rod to drive scroll cover and make it rotate, clutch combination, clutch drives the output mechanism and makes it rotate and outputting powder; and second stroke is exhaust stroke, including: releasing clutch and back-pushing piston to the original position by reset spring. Said invented two-stroke engine includes engine body, air admission and exhaust valves controlled by electromagnetic valve, conversion component for converting linear movement into rotary movemkent, reset spring and clutch, etc.

Improvements to work attachment assemblies and in particular work attachment assemblies for use with work machines such as excavators.

The invention discloses a transmission gear set that can suppress knocking noise. It includes a driving wheel, a driven wheel engaged with the driving wheel and an output shaft that cooperates with the driven wheel. The driven wheel is loosely sleeved on the output shaft. The driven wheel includes a gear and a sleeve fixed in the gear. The sleeve is made of permanent magnet material and is magnetized. The output shaft is made of ferromagnetic material. The driven wheel of the present invention is made of permanent magnet material. The composite structure formed by the bushing and gear, and the magnetic field effect between the permanent magnet bushing and the output shaft, can not only make the driven wheel rotate normally without wear, but also provide electromagnetic damping to increase the drag torque of the driven wheel, thereby increasing the drag torque of the driven wheel. The meshing rotation damping of the driven wheel keeps the driven wheel and the driving wheel in single-sided contact, reducing or even eliminating the knocking phenomenon caused by the fluctuation of the driving wheel speed.

The invention is applicable to the field of motors, and discloses a rotor assembly and an oil bearing motor, wherein the rotor assembly includes a rotating shaft, a rotor installed on the rotating shaft, a first oil bearing installed on the rotating shaft and located on one side of the rotor, and a first oil bearing installed on the rotating shaft On the second oil bearing on the other side of the rotor, where the first and second clamps are installed on the rotating shaft, the first clamp is located between the first oil bearing and the rotor, and the second clamp is located between the first oil bearing and the rotor. 2 Between the oil bearing and the rotor. In the present invention, the positioning structure of the shaft sleeve is replaced by a double circlip positioning structure, and the setting of parts such as rubber gaskets, nylon gaskets and steel balls in the rear end cover is cancelled, thus effectively simplifying the structure, processing procedures and The assembly process; and completely eliminate the impact of steel balls, greatly reducing the vibration noise of the oil-impregnated bearing motor; at the same time, it also greatly reduces the axial movement defect rate of the oil-impregnated bearing motor.