Abstract A combustion engine is disclosed in which the entire fuel-air mixture is vaporized within the intake manifold to combust more efficiently and completely in the combustion chamber, thereby significantly reducing exhaust emissions. The vaporization of the entire fuel-air mixture is effected by utilizing a portion or all of the available heat energy passing through the exhaust manifold in order to heat the intake manifold. In the various embodiments disclosed, the exhaust manifold either extends through, completely envelops, or is positioned adjacent the intake manifold for heat transfer purposes. In all cases, suitable bypass conduits and valve means are provided to relieve a portion or all of the heat energy from heating the intake manifold. A screen is also provided in the intake conduit between the carburetor and the intake manifold to disperse the fuel-air mixture and prevent any droplets formed in the carburetor from passing therethrough.
A combustion engine comprising: an engine block having a plurality of combustion chambers formed therein, said engine block furthEr having an inlet port and an outlet port communicating with each combustion chamber; an intake manifold comprising a main body having an intake conduit interconnecting said main body to a carburetor and a plurality of branches interconnecting said main body to said plurality of inlet ports; and an exhaust manifold having a plurality of branches connected to said plurality of outlet ports, said plurality of branches further being connected to an exhaust chamber completely enveloping said intake manifold for heating the area within said manifold, said exhaust manifold further comprising a central outlet conduit communicating with said exhaust chamber, said central conduit located adjacent the intake conduit of said intake manifold, said exhaust manifold further comprising a pair of end conduits communicating with said exhaust chamber, said end conduits being located adjacent the extremities of said intake manifold, said end conduits further having thermostatically controlled valve means located therein for controlling the flow of exhaust gases therethrough.
Claim 2
Dependent Claim
176 words
A combustion engine comprising: an engine block having a plurality of combustion chambers formed therein, said engine block furthEr having an inlet port and an outlet port communicating with each combustion chamber; an intake manifold comprising a main body having an intake conduit interconnecting said main body to a carburetor and a plurality of branches interconnecting said main body to said plurality of inlet ports; and an exhaust manifold having a plurality of branches connected to said plurality of outlet ports, said plurality of branches further being connected to an exhaust chamber completely enveloping said intake manifold for heating the area within said manifold, said exhaust manifold further comprising a central outlet conduit communicating with said exhaust chamber, said central conduit located adjacent the intake conduit of said intake manifold, said exhaust manifold further comprising a pair of end conduits communicating with said exhaust chamber, said end conduits being located adjacent the extremities of said intake manifold, said end conduits further having thermostatically controlled valve means located therein for controlling the flow of exhaust gases therethrough.
Claim 3
Dependent Claim
17 words
The invention of claim 1 wherein said intake manifold comprises a screen mounted across the intake conduit.
Claim 4
Dependent Claim
33 words
The invention of claim 1 further including a cooling jacket completely enveloping said casing, said cooling jacket having inlet and outlet means for permitting the ingress and egress of the cooling fluid therethrough.
Claim 5
Dependent Claim
24 words
The invention of claim 3 further including cooling fin means mounted on said casing for increasing the heat transfer thereby increasing the efficiency thereof.