阅读说明：本技术 传动结构、系统、凸轮轴扭矩的调整方法及发动机 (Transmission structure, system, camshaft torque adjusting method and engine ) 是由 路和林 朱荣玥 刘雪梅 于 2020-06-05 设计创作，主要内容包括：本申请提供一种传动结构、系统、凸轮轴扭矩的调整方法及发动机,该传动结构包括凸轮轴皮带轮、凸轮轴、电动机、蜗轮蜗杆结构和扭矩传感器；电动机能够驱动蜗轮蜗杆结构；蜗轮蜗杆结构包括蜗轮；蜗轮与凸轮轴皮带轮套设于凸轮轴上,蜗轮与凸轮轴皮带轮连接；蜗轮能够驱动凸轮轴转动,凸轮轴能够驱动凸轮轴皮带轮转动；扭矩传感器设于凸轮轴内,扭矩传感器能够获取凸轮轴的扭矩。本申请实施例提供的正时皮带传动结构通过扭矩传感器确定凸轮轴实时扭矩,利用电动机提供凸轮轴校正力矩,使波动的凸轮轴扭矩变为与转速相关的稳定扭矩,使正时皮带在工作周期内均处于较低的张力水平。(The application provides a transmission structure, a system, a camshaft torque adjusting method and an engine, wherein the transmission structure comprises a camshaft belt pulley, a camshaft, a motor, a worm and gear structure and a torque sensor; the motor can drive the worm and gear structure; the worm gear structure comprises a worm gear; the worm wheel and the camshaft belt pulley are sleeved on the camshaft and connected with the camshaft belt pulley; the worm wheel can drive the camshaft to rotate, and the camshaft can drive the camshaft belt pulley to rotate; the torque sensor is arranged in the camshaft and can acquire the torque of the camshaft. The timing belt transmission structure provided by the embodiment of the application determines the real-time torque of the camshaft through the torque sensor, provides the camshaft correction torque by using the motor, changes the fluctuating camshaft torque into the stable torque related to the rotating speed, and enables the timing belt to be in a lower tension level in the working period.)

1. A timing belt transmission structure is characterized by comprising a camshaft belt pulley (1), a camshaft, a motor (2), a worm gear structure and a torque sensor;

the motor (2) can drive the worm and gear structure;

the worm and gear structure comprises a worm wheel (3);

the worm wheel (3) and the camshaft belt pulley (1) are sleeved on the camshaft, and the worm wheel (3) is connected with the camshaft belt pulley (1); the worm wheel (3) can drive the camshaft to rotate, and the camshaft can drive the camshaft pulley (1) to rotate;

the torque sensor is arranged in the camshaft and can acquire the torque of the camshaft.

2. The timing belt transmission structure according to claim 1, further comprising a one-way bearing (5); the worm wheel (3) is connected with the camshaft belt pulley (1) through the one-way bearing (5).

3. The timing belt drive structure according to claim 1, further comprising a drive pair through which the worm wheel (3) and the camshaft pulley (1) are connected.

4. The timing belt transmission structure according to claim 1, characterized in that the worm gear structure further comprises a worm (4), the electric motor (2) is connected with the worm (4), and the worm (4) is in fit connection with the worm wheel (3).

5. A timing belt drive system, characterized in that the timing belt drive system is a closed loop control system; the timing belt drive system comprises a control module and the timing belt drive structure of any one of claims 1-4;

the torque sensor is connected with the control module; the control module is connected with the motor (2);

the torque sensor can transmit real-time torque of the camshaft to the control module;

the control module can output a compensation torque value required to be provided by the motor (2) according to the real-time torque of the camshaft and the camshaft calibration torque arranged in the control module;

the electric motor (2) can perform torque correction on the camshaft according to the compensation torque value.

6. A timing belt drive system according to claim 5, characterized in that the electric motor (2) is capable of torque correcting the camshaft in dependence on the compensation torque value, comprising:

the motor (2) drives the worm wheel (3) to rotate according to the compensation torque value, and the worm wheel (3) drives the camshaft to rotate so as to carry out torque correction on the camshaft.

7. A method of adjusting camshaft torque, comprising the steps of:

acquiring real-time torque of a camshaft by using a torque sensor in the camshaft, and sending the real-time torque of the camshaft to a control module through the torque sensor;

controlling the control module to output a compensation torque value required to be provided by a motor (2) according to the real-time torque of the camshaft and the camshaft calibration torque arranged in the control module;

and controlling the motor (2) to adjust the camshaft torque according to the compensation torque value.

8. The camshaft torque adjustment method according to claim 7, wherein the controlling the electric motor (2) to adjust the camshaft torque according to the compensation torque value includes:

and controlling the motor (2) to drive the worm wheel (3) to rotate according to the compensation torque value, wherein the worm wheel (3) drives the camshaft to rotate so as to adjust the torque of the camshaft.

9. An engine comprising the timing belt transmission structure according to any one of claims 1 to 4.

10. An engine comprising the timing belt drive system of any one of claims 5-6.