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2. Timing belt (camshaft) - Wikipedia

   en.wikipedia.org/wiki/Timing_belt_(camshaft)

   The advantages of timing belts are typically a lower cost, reduced friction losses, [citation needed] less noise and that belts traditionally do not require lubrication. [4] The main disadvantage is that belts wear over time, therefore belt replacement is recommended at specific intervals.

3. Overhead camshaft engine - Wikipedia

   en.wikipedia.org/wiki/Overhead_camshaft_engine

   [1] [10] Timing belts are inexpensive, produce minimal noise and have no need for lubrication. [11]: 93 A disadvantage of timing belts is the need for regular replacement of the belt; [11]: 94 recommended belt life typically varies between approximately 50,000–100,000 km (31,000–62,000 mi).

4. Belt (mechanical) - Wikipedia

   en.wikipedia.org/wiki/Belt_(mechanical)

   Timing belts with a helical offset tooth design are available. The helical offset tooth design forms a chevron pattern and causes the teeth to engage progressively. The chevron pattern design is self-aligning and does not make the noise that some timing belts make at certain speeds, and is more efficient at transferring power (up to 98%).

5. Toothed belt - Wikipedia

   en.wikipedia.org/wiki/Toothed_belt

   A toothed belt, timing belt, cogged belt, cog belt, or synchronous belt is a flexible belt with teeth moulded onto its inner surface. Toothed belts are usually designed to run over matching toothed pulleys or sprockets. Toothed belts are used in a wide array of mechanical devices where high power transmission is desired.

6. Serpentine belt - Wikipedia

   en.wikipedia.org/wiki/Serpentine_belt

   Serpentine belt (foreground) and dual vee belt (background) on a bus engine Belt tensioner providing pressure against the back of a serpentine belt in an automobile engine. A serpentine belt (or drive belt [1]) is a single, continuous belt used to drive multiple peripheral devices in an automotive engine, such as an alternator, power steering pump, water pump, air conditioning compressor, air ...

7. Interference engine - Wikipedia

   en.wikipedia.org/wiki/Interference_engine

   A pair of poppet valves bent by collision with a piston after timing belt failure. The engine was running at 4500 RPM. In interference engine designs, replacing a timing belt in regular intervals (manufacturers recommend intervals ranging from 60,000 to 104,000 miles) or repairing chain issues as soon as they are discovered is essential, as incorrect timing may result in the pistons and valves ...