Internal combustion engine with induction air heating means

Claim 2

In combination with an internal combustion engine including a pair of angularly disposed banks of cylinders arranged in a V and having cylinder inlet and exhaust gas passages opening through said cylinder banks adjacent their outer ends, an inlet manifold bridging the open end of the V, said inlet manifold having at least one inlet opening and connecting with the cylinder inlet passages to deliver combustion air thereto and an exhaust heat stove separate from said manifold and extending thereunder between the cylinder banks, said heat stove including exhaust passage means joining exhaust passages of the two cylinder banks so as to permit a flow of exhaust gases therebetween and air passage means in heat exchange relation with said heat stove exhaust passage means, said air passage means being connectable with the inlet opening of said inlet manifold to provide for the delivery of heated air from said heat stove to said manifold.

Claim 3

The combination of claim 1 wherein said inlet manifold is formed of aluminum and said heat stove includes a radiation shield to prevent the transfer of excessive exhaust heat to the aluminum manifold.

Claim 4

The combination of claim 1 wherein said engine further includes exhaust manifolds disposed outboard of said cylinder banks and connecting with said exhaust gas passages to receive exhaust gases therefrom and a second heat stove formed in conjunction with one of said exhaust manifolds and defining an air passage in heat exchange relation with said one exhaust manifold, said air passage being connectable with the inlet opening of said inlet manifold to provide additional heated air thereto.

Claim 5

The combination of claim 3 wherein said inlet manifold is formed of aluminum and said first-named heat stove includes a radiation shield to prevent the transfer of excessive exhaust heat to the aluminum manifold.

Claim 6

In combination with an internal combustion engine including a pair of angularly disposed banks of cylinders arranged in a V and having cylinder inlet and exhaust gas passages opening through said cylinder banks adjacent their outer ends, an inlet manifold bridging the open end of the V, said inlet manifold having at least one inlet opening and connecting with the cylinder inlet passages to deliver combustion air thereto and an exhaust heat stove connectable with the inlet of said inlet manifold to provide heated air thereto, said heat stove comprising, an exhaust crossover member separate from said manifold and extending thereunder between the cylinder banks, said crossover member joining exhaust gas passages of the two cylinder banks so as to permit a flow of exhaust gases therebetween to heat the crossover member and a flow-directing shield spacedly disposed around said crossover member and defining an air passage having an inlet and outlet and disposed in heat exchange relation with said crossover member, said passage outlet being connectable with said inlet manifold inlet opening.

Claim 7

In combination with an internal combustion engine including a pair of angularly disposed banks of cylinders arranged in a V and having cylinder inlet and exhaust gas passages opening through said cylinder banks adjacent their outer ends, an inlet manifold bridging the open end of the V, said inlet manifold having at least one inlet opening and connecting with the cylinder inlet passages to deliver combustion air thereto and an exhaust heat stove connectable with the inlet of said inlet manifold to provide heated air thereto, said heat stove comprising, an exhaust crossover member separate from said manifold and extending thereunder between the cylinder banks, said crossover member joining exhaust gas passages of the two cylinder banks so as to permit a flow of exhaust gases therebetween to heat the crossover member and a flow-directing shield spacedly disposed around said crossover member and defining an air passage having an inlet and outlet and disposed in heat exchange relation with said crossover member, said passage outlet being connectable with said inlet manifold inlet opening.

Claim 8

The combination of claim 5 wherein said flow-directing shield comprises a plurality of sheet metal members secured together so as to substantially surround said exhaust crossover member and including spacing means for maintaining said sheet metal members in spaced relation with said exhaust crossover member, said sheet metal members acting both to define a passage for air flow in heat exchange relation with said crossover member and to prevent the transfer by radiation of excessive heat from said crossover member to said inlet manifold and other portions of said engine.

Claim 9

The combination of claim 6 wherein said spacing means include dimplelike depressions spaced over the surface of certain of said sheet metal members and adapted to contact the surface of said exhaust crossover member so as to maintain the spaced relation of said members and damp undesired vibrations in said sheet metal members.