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What is the channel number for Volkswagen fuel pressure data stream?

1 Answers

HarleyRose

07/30/25 10:34am

The channel number for Volkswagen fuel pressure data stream is data stream group 140. The fuel pressure is measured through the fuel pressure regulator. The following is an introduction to the fuel pressure regulator: 1. Introduction to the fuel pressure regulator: The fuel pressure regulator is essentially an overflow valve controlled by a diaphragm. The diaphragm divides the regulator into an upper spring chamber and a lower fuel chamber. The diaphragm controls the opening of the overflow valve to maintain pressure balance between the upper and lower chambers. 2. Working principle: When the fuel pressure in the fuel chamber exceeds the combined force of the spring pressure and vacuum pressure, the diaphragm arches upward, opening the regulator valve. Some fuel flows back to the fuel tank through the return port via the ball valve, reducing the fuel pressure. When the pressure drops to the set control pressure of the regulator, the ball valve closes to maintain a certain pressure in the fuel line from the pump check valve to the pressure regulator.

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