正时皮带（Timing belt）是发动机配气系统的重要组成部分，通过与曲轴的连接并配合一定的传动比来保证进、排气时间的准确。

In a piston engine, either a timing belt (also called a cambelt) or timing chain or set of timing gears is a perishable component used to synchronize the rotation of the crankshaft and the camshaft.

The timing belt is an integral part of your vehicle’s engine. Learn what a timing belt is, what is does, and how to repair and replace them.

A timing belt also known as a cambelt, is an essential part of your vehicle’s engine. In this article, we’ll discuss what a timing belt is, what it does, what to do if it breaks and when you should replace it.

Explore our guide on how to change a timing belt, identify signs of wear, and know what the replacement might cost you.

Aug 11, 2025 · This guide explains how to fix a timing belt problem, what tools you need, and the step-by-step process for safely replacing a timing belt in most modern vehicles.

Mar 11, 2021 · Timing belts are toothed belts designed to transmit power and maintain precise synchronization between rotating components, such as gears or pulleys. They’re often used in …

Apr 20, 2025 · Most vehicles require rubber timing belts, as opposed to older steel timing chains. Available for a few dollars at any auto parts store, you'll likely need to change yours every 90,000 to …

Aug 28, 2024 · As the name suggests, a timing belt controls the timing of the engine's valves. Valve timing is how engineers make sure that a car’s pistons never run into its intake or exhaust valves.

The timing belt or chain in your car's engine keeps the opening of the valves properly timed with the motions of the pistons so they don't interfere with each other.