Measuring pressure of pneumatic vehicle tyres - using membrane transducer with compensation gas chamber and buffer chamber

摘要

An arrangement for determining the pressure of pneumatic tyres on vehicle wheels has a membrane acted upon by a pressure cell (14) or switch and a hollow chamber (8) bounded by the membrane and contg. a compensation gas. The effects of external influences on the gas are substantially eliminated. The compensation gas chamber (8) is positioned on the side of the membrane (9) facing the tyre hollow vol. and remote from the pressure cell (14) transfer element (13). The chamber wall (10) facing the air chamber of the tyre has an uneven surface of projections and ribs etc. The hollow chamber (12) on the other side of the membrane (9) from the compensation gas chamber (8) communicates with the tyre air vol. via two or more channels (11) with radial limiting webs.