Abstract:
An engine control module (10) having an environmentally-sealed housing (12, 12a) includes a housing-mounted air pressure sensor (18) for providing a reliable measure of atmospheric air pressure to a control circuit (14a) mounted within the housing (12, 12a). The sensor (18) is mounted on an inboard face of the housing (12a), and includes a sensor element (18a), a body portion (18b) and a riser portion (18c). The sensor element (18a) is mounted in the body portion (18b), and the riser portion (18c) protrudes through an opening (20) in the housing (12a) to couple the sensor element (18a) to atmospheric pressure outside the housing (12, 12a). The body portion (18b) is sealingly secured to the inboard face of the housing (12a), and a set of conductor pins (26) molded into the body portion (18b) extend inward to engage a circuit board (14) enclosed by the housing (12, 12a), and thereby directly couple the sensor element (18a) to the ECM's control circuit (14a). The top of the riser portion (18c) is capped by a splash-proof lid (24) to prevent water intrusion.
Abstract:
An engine control module (10) having an environmentally-sealed housing (12, 12a) includes a housing-mounted air pressure sensor (18) for providing a reliable measure of atmospheric air pressure to a control circuit (14a) mounted within the housing (12, 12a). The sensor (18) is mounted on an inboard face of the housing (12a), and includes a sensor element (18a), a body portion (18b) and a riser portion (18c). The sensor element (18a) is mounted in the body portion (18b), and the riser portion (18c) protrudes through an opening (20) in the housing (12a) to couple the sensor element (18a) to atmospheric pressure outside the housing (12, 12a). The body portion (18b) is sealingly secured to the inboard face of the housing (12a), and a set of conductor pins (26) molded into the body portion (18b) extend inward to engage a circuit board (14) enclosed by the housing (12, 12a), and thereby directly couple the sensor element (18a) to the ECM's control circuit (14a). The top of the riser portion (18c) is capped by a splash-proof lid (24) to prevent water intrusion.