Prime sensors for electronic automotive-engine control

Sensors faithfully transduce automotive control parameters into electric signals suitable for transmission to the electronic controls. Two parameters key to engine control are crankshaft position and manifold absolute pressure, which are used in both fuel and ignition control systems. This paper describes a variety of sensor concepts for each of the two parameters, and provides guidelines for expediting screening tests. The case for including sensor selection as an integral part of system trade-off studies is also argued.