Caterpillar Inc.
EXHAUST SYSTEM HAVING PRESSURE SENSING SYSTEM WITH PLUGGING-MITIGATION CONDUIT FORMING ALWAYS-OPEN LEAKAGE PATH

Abstract:

An exhaust system includes an exhaust pressure sensing system having sensor conduits structured to fluidly connect to an exhaust conduit in an exhaust system and feed exhaust to a differential pressure sensor. The differential pressure sensor produces a pressure signal indicative of a pressure drop across an exhaust aftertreatment element such as an exhaust filter. A plugging-mitigation conduit provides an always-open leakage path to convey condensate in a stream of leaked exhaust between the sensor conduits to prevent formation of deposits that can impact pressure sensing accuracy.