Patent ID: 7426924
Filing Date: 2008-09-23
Classification: F01M,F02M,Y02T

Abstract:
1. An engine, comprising: a housing; a working member movable within an interior of the housing and separating a combustion chamber from a non-combustion chamber; a chamber-ventilation system that includes a passageway with a first end of the passageway connected to the non-combustion chamber and a second end of the passageway located downstream of the first end of the passageway, wherein the chamber-ventilation system includes a filter system disposed within the passageway, the filter system including a filter housing and a filter disposed in the filter housing, and wherein the chamber-ventilation system is configured such that during operation of the engine gas travels from the non-combustion chamber, into the first end of the passageway, through the passageway, to the second end of the passageway; and a first sensor configured to sense a pressure of gas upstream of the filter system in the passageway and to produce a signal relating to the pressure of the gas upstream of the filter system.