Timing belts are designed both for applications in diesel and petrol engines, and are fitted both on motorcars and industrial vehicles.
With the use of new materials, the belts can be made in various structures and tooth profiles, to guarantee the performance of modern vehicles.
Nowadays, belts are subject to stresses and working conditions than seemed impossible only a few years ago:
- High fuel injection pressure, which can reach up to 2000 bar in some applications.
- Multi-valve engines: double camshaft with higher stresses
- Engines with high power and operating temperatures over 120°C .
They should also guarantee:
- Noise reduction.
- Limited dimensional tolerances
- Limited variation of the belt dimensions in operation
- High resistance to cloth abrasion
- Longer service life/mileage
- Chloroprene: first generation belt, usually not subject to high stresses, such as temperatures over 70°C or high work loads.
- HSN: structure characterised by its optimal resistance to high temperature up to 130°C and pulsing loads.
- HT: the belt cloth is coated with a highly abrasion-resistant PTFE film, designed to reduce to a minimum the cloth wear on the lap and on the sides of the teeth. This structure guarantees the belt maximum service life on engines with high injection pressure. Available for TDI Audi and VW engines and on TDCi Ford, Dci Renault and JTDm Fiat. For some applications, a cloth is applied on the tooth back to compensate for and increase resistance to side wear.
The warranty on Dayco products shall be effective for two years starting from their installation.