In recent years, due to automotive emission regulations, an increasing number of car engines are using Gasoline Direct Injection (GDI) technology. Although GDI can improve fuel efficiency and reduce NOx emissions, the pressure of fuel injected into the combustion chamber is at a much higher level.
An increase in pressure will result in the decrease of molecular free volume, which gives rise to an increase in the glass transition temperature (Tg) of the elastomeric material. The increase in Tg will be at a shift of approximately 1 ºC (1.8ºF) for every 52bar (750psi) increase in pressure.
As an elastomeric material under low temperature service conditions approaches the glass transition temperature, it undergoes a phase change from a rubberlike phase to a glassy state, losing its elasticity and its ability to perform under pressure as it becomes more brittle. The most notable inc...
In recent years, due to the booming of electronic and semiconductor technologies, inductors and el...
Products, equipment and components that come into contact with drinking water have to be evaluated...
The friction characteristics of rubber parts can be result of many factors, such as the nature fea...