System for controlling air and fuel temperature

Claim 1

In an internal combustion engine having a fuel metering means for metering fuel and air to a combustion chamber and an exhaust manifold for conducting exhaust gases away from the combustion chamber, an induction system comprising air temperature control means for providing to said fuel metering means air having a temperature within a predetermined range, said air temperature control means including heating means for producing heated air having a temperature above said predetermined range and mixing means for mixing said heated air with ambient air to produce air having a temperature within said predetermined range, an air cleaner means for filtering the air being provided to the fuel metering means, said air cleaner means including a housing having an inlet receiving the mixed air from said mixing means, an outlet for transmitting the air to the engine, and a filter element for filtering the air passing from said inlet to said outlet, fuel temperature control means for providing fuel to said combustion chamber at a temperature within a predetermined range, said fuel temperature control means including a heat exchanger located in the mixed air stream resulting from said mixing means, said heat exchanger adjusting the fuel temperature according to the temperature of the mixed air stream, and tEmperature sensing means for controlling said mixing means, said temperature sensing means being located downstream of said fuel heat exchanger and said filter element.