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Jiangxi Tongxin Machinery Manufacturing Co., Ltd.


Address: First Road, Lulin Industrial Zone, Guangfeng District, Shangrao City, Jiangxi Province

Phone: 135-7635-1398

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Postcode: 334600

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  • You don't know about camshaft position sensors

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    Release time: 2018-03-26 Clicks: 469

  • The importance of wheelbase

    From a design perspective, the wheelbase is an important parameter, which is closely related to the performance of the car. The wheelbase determines the position of the car's center of gravity. Therefore, once the wheelbase of the car is changed, the general layout design must be re-designed, especially the size of the drive train and body parts, the parameters of the spring and shock absorber in the suspension system, and the size of the steering trapezoidal tie rod in the steering system. Simultaneous wheelbase
    Release time: 2017-12-18 Hits: 394

  • Impact of vehicle wheelbase on vehicle performance

    If the wheelbase is too short or too long, it will affect the performance of the entire vehicle. The shorter the wheelbase of a car, the shorter the length of the car, the lower the mass, the smaller the bend radius and the longitudinal passage radius, the better the maneuverability of the car. However, if the wheelbase is too short, the length of the carriage will be insufficient, and the rear overhang (the distance between the vehicle's last wheel axis and the rear end of the vehicle) will be too long, which will cause longitudinal swing when driving.
    Release time: 2017-12-18 Click times: 425

  • Camshaft position

    There are three types of camshafts: lower, middle, and upper. The camshaft of the lower-mounted valve mechanism is located in the crankcase, the camshaft of the central-mounted valve mechanism is located at the upper part of the body, and the camshaft of the upper-type valve mechanism is located on the cylinder head. The engines of most production cars are now equipped with overhead camshafts. The main advantages of the overhead camshaft structure are fewer moving parts and transmission chain
    Release time: 2017-12-17 Clicks: 409

  • Structure of the camshaft

    The main body of the camshaft is a cylindrical rod body approximately the same length as the cylinder block. There are several cams on the top for driving the valves. The camshaft is supported in the camshaft bearing hole through the camshaft journal, so the number of camshaft journals is an important factor affecting the rigidity of the camshaft support. If the camshaft stiffness is insufficient, bending deformation will occur during work, affecting the gas distribution
    Release time: 2017-12-02 Click times: 406

  • Classify cars by wheelbase

    In actual use, the length of the wheelbase directly affects the length of the car, which in turn affects the interior space of the car. According to the length of the wheelbase, cars can be classified into mini cars, small cars, compact cars, medium-sized cars and luxury cars. Miniature car: usually refers to models with axles below 2400mm, which has less legroom in the back seat. If an adult is sitting in the back seat,
    Release time: 2017-11-30 Clicks: 384

  • Camshaft working conditions and materials

    Cam bearings are subject to periodic shock loads. The contact stress between the cam and the tappet is very large, and the relative sliding speed is also high, so the working surface of the cam is relatively worn. In view of this situation, in addition to the high dimensional accuracy, small surface roughness, and sufficient rigidity that the camshaft journal and cam working surface should have, it should also have high wear resistance and good lubrication. Convex
    Release time: 2017-11-15 Click times: 328

  • Camshaft modification

    In order to improve the power of the engine, some modification shops have modified the camshaft of the engine, of which the replacement of high-angle camshaft camshaft (Hi-CAM) is a common modification method. This modification operation is not complicated, but due to insufficient understanding of the working angle and working principle of the cam on the camshaft by some modification personnel, the effect of the modification is not obvious or even leads to
    Release time: 2017-10-31 Click times: 272

  • Camshaft failure

    Common failures of camshafts include abnormal wear, abnormal sounds, and breaks. The abnormal wear and tear often occur before the abnormal sounds and breaks occur. (1) The camshaft is located almost at the end of the engine lubrication system, so the lubrication condition is not optimistic. If the oil pump has insufficient oil supply pressure due to long use time or other reasons, or the oil passage is blocked, the oil cannot reach the camshaft
    Release time: 2017-10-17 Clicks: 264

  • Camshaft drive

    Common transmission methods between camshaft and crankshaft include gear transmission, chain transmission and toothed belt transmission. The transmission between the lower camshaft and the middle camshaft and the crankshaft mostly uses a cylindrical timing gear. Generally, only a pair of gears are required from the crankshaft to the camshaft. If the diameter of the transmission gear is too large, an additional middle can be added. Idler. In order to stabilize the mesh and reduce work
    Release time: 2017-10-03 Click times: 261

  • Jiangxi Tongxin Machinery Manufacturing Co., Ltd.

    Jiangxi Tongxin Machinery Manufacturing Co., Ltd. wishes: new and old customers and all staff, Happy Mid-Autumn Festival National Day, and the moon and Mid-Autumn Festival will be better, and National Day will be more festive. , The people reunite a successful career, happiness and well-being, good health, hard work, you will always win, wish you a happy Mid-Autumn Festival! Jiangxi Tongxin Machinery Manufacturing Co., Ltd.
    Release time: 2017-09-30 Click times: 553

  • Camshaft processing technology

    Selection of rough datum: Often the round cylindrical surface of the blank supporting the journal and one of its sides are used as positioning reference. End face processing: domestic manufacturers use milling. Some foreign countries (Ford in the United States) use grinding instead of milling. 1. For blanks that are die forgings, especially precision grinding forgings, the accuracy of the blanks is guaranteed by the forging die, which has higher accuracy and machining allowance.
    Release time: 2017-09-15 Clicks: 320

  • Daily axle maintenance

    1. Before the vehicle is running, check whether the external connecting bolts of the axle are loose, whether the axle is leaking oil, whether the wheel hub, reducer assembly is abnormal, etc. 2. Mandatory maintenance of axles: A: Mandatory maintenance is performed between 3000 and 5000 km depending on the operating conditions. B: The first maintenance includes: changing the lubricating oil, gear oil, checking the front axle toe, and adjusting the brake room.
    Release time: 2017-08-15 Clicks: 320

  • Car axle number

    1. The number of automobile axles is mainly used in cargo trucks, military vehicles, special vehicles or a small number of buses. An automobile axle (also called an axle) is connected to the frame (or) through a suspension, and wheels are installed at both ends thereof. Function: It is the suspension, not the axle, that transmits the force and torque between the frame and the axle (wheel). The role of the axle is to bear the load of the car and maintain the car on the road
    Release time: 2017-03-16 Click times: 449

  • Camshaft

    The camshaft is part of the engine's gas distribution mechanism, which is specifically responsible for driving the valves to open and close on time. The role is to ensure that the engine regularly sucks fresh combustible mixture into the cylinder during work and timely discharges the exhaust gas after combustion. The camshaft drives the valve directly through the rocker arm, which is very suitable for high-speed car engines.
    Release time: 2017-02-16 Clicks: 331

  • Camshaft production technology

    The camshaft is one of the key parts of the engine. The hardness of the peach tip of the camshaft and the depth of the white layer are the key technical indicators that determine the service life of the camshaft and the efficiency of the engine. On the premise of ensuring that the cam has a sufficiently high hardness and a relatively deep white mouth layer, it should also be considered that the journal does not have higher carbides, so that it has better cutting performance. The main producer of camshafts at home and abroad
    Release time: 2017-02-16 Clicks: 426

  • Camshaft modification

    In order to improve the power of the engine, some modification shops have modified the camshaft of the engine, of which the replacement of high-angle camshaft camshaft (Hi-CAM) is a common modification method. This modification operation is not complicated, but due to insufficient understanding of the working angle and working principle of the cam on the camshaft by some modification personnel, the effect of the modification is not obvious or even leads to
    Release time: 2017-02-16 Clicks: 429

  • Camshaft failure

    Common failures of camshafts include abnormal wear, abnormal sounds, and breaks. The abnormal wear and tear often occur before the abnormal sounds and breaks occur. (1) The camshaft is located almost at the end of the engine lubrication system, so the lubrication condition is not optimistic. If the oil pump has insufficient oil supply pressure due to long use time or other reasons, or the oil passage is blocked, the oil cannot reach the camshaft
    Release time: 2017-02-16 Clicks: 425

  • Camshaft drive

    Common transmission methods between camshaft and crankshaft include gear transmission, chain transmission and toothed belt transmission. The transmission between the lower camshaft and the middle camshaft and the crankshaft mostly uses a cylindrical timing gear. Generally, only a pair of gears are required from the crankshaft to the camshaft. If the diameter of the transmission gear is too large, an additional middle can be added. Idler. In order to stabilize the mesh and reduce work
    Release time: 2017-02-16 Clicks: 426

  • Camshaft position

    There are three types of camshafts: lower, middle, and upper. The camshaft of the lower-type air distribution mechanism is located in the crankcase, the camshaft of the central-type air distribution mechanism is located at the upper part of the body, and the camshaft of the upper-type air distribution mechanism is located on the cylinder head. The engines of most production cars are now equipped with overhead camshafts. The main advantages of the overhead camshaft structure are fewer moving parts and transmission chain
    Release time: 2017-02-16 Clicks: 389

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