Exhaust apparatus
AssigneeMadison Combustion Associates
InventorEdward H. Heath
Life of this patent
Estimating the term…
Abstract
An exhaust apparatus for a combustion engine having a combustion chamber and an exhaust pipe for conveying exhaust gas in an exhaust stream from the combustion chamber is disclosed, wherein the exhaust apparatus includes a fan member disposed downstream of the combustion chamber and substantially sealingly associated with the exhaust pipe and an air inlet for introducing air relative to the fan member whereby the fan member is driven by the exhaust stream and air so as to create an area of low pressure between the fan member and the combustion chamber whereby extraction of exhaust gas from the combustion chamber is facilitated.
Claims21
An exhaust apparatus for a combustion engine having a combustion chamber and an exhaust pipe having an inner space for conveying exhaust gas in an exhaust stream from the combustion chamber, the exhaust apparatus comprising a fan disposed downstream of the combustion chamber and substantially sealingly associated with said exhaust pipe, air inlet means for introducing air to said exhaust stream upstream of said fan, and a normally closed check valve associated with the air inlet means and opened by an increase in pressure differential between the source of air and the inner space whereby backflow from the exhaust pipe out of the air inlet means is prevented.
An exhaust apparatus for a combustion engine having a combustion chamber and an exhaust pipe for conveying exhaust gas in an exhaust stream from the combustion chamber, the exhaust apparatus comprising a fan disposed downstream of the combustion chamber and substantially sealingly associated with said exhaust pipe, and means for driving said fan so as to create an area of low pressure between the fan and the combustion chamber whereby extraction of exhaust gas from the combustion chamber is facilitated.
A method for operating a combustion engine having a combustion chamber and an exhaust pipe for conveying exhaust gas in an exhaust stream from the combustion chamber, comprising the step of:
- providing an exhaust apparatus comprising a fan and means for driving the fan;
- positioning the exhaust apparatus on the exhaust pipe so as to sealingly associate the fan with the exhaust pipe;
- and
- operating the means for driving so as to create an area of low pressure between the fan and the combustion chamber whereby extraction of exhaust gas from the combustion chamber is facilitated.
Dependencies are inferred from the claim text.