MAP sensor

from Wikipedia, the free encyclopedia

A MAP sensor (MAP = manifold absolute pressure ) is a pressure sensor for detecting the intake manifold - absolute pressure in gasoline and turbo diesel engines . In the gasoline engine, the measured variable is used to control the electronic intake manifold injection ; in the turbodiesel, a signal is obtained from this in order to control the position of the turbine guide vanes on VTG loaders , among other things .

LPG systems that inject in the gas phase also require a MAP sensor, depending on the type, to assess the gas pressure in relation to the pressure in the intake pipe.

As a rule, the MAP sensor is attached directly to the intake manifold. The intake manifold pressure usually acts on a piezo element , which then generates a corresponding output signal via an electronic circuit. This can be a PWM signal or an electrical voltage .

literature

  • Richart van Basshuysen, Fred Schäfer: Handbook Internal Combustion Engine Basics, Components, Systems, Perspectives. 3rd edition, Friedrich Vieweg & Sohn Verlag / GWV Fachverlage GmbH, Wiesbaden, 2005, ISBN 3-528-23933-6
  • Karl-Heinz Dietsche, Thomas Jäger, Robert Bosch GmbH: Automotive pocket book. 25th edition, Friedr. Vieweg & Sohn Verlag, Wiesbaden, 2003, ISBN 978-3-8348-0138-8