Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
139 words
In an internal combustion engine including a fuel supply line, liquid coolant flow passages, and a manifold vacuum source, wherein the improvement comprises: a fuel heater for use in heating liquid fuel, said heater including an elongated hollow body defining a first central passage extending therethrough and first inner, second intermediate and third outer chambers disposed about said passage, first chamber and second chamber, respectively, with heater body wall portions of good heat transfer materials separating adjacent chambers and said first chamber from said passage, said passage including opposite liquid fuel inlet and outlet ends, a plurality of small diameter passages communicating longitudinally spaced portions of said passage with said first chamber, said second chamber including manifold vacuum air inlet and outlet means opening thereinto and said third chamber including liquid engine coolant inlet and outlet means opening thereinto.
Claim 2
Dependent Claim
139 words
In an internal combustion engine including a fuel supply line, liquid coolant flow passages, and a manifold vacuum source, wherein the improvement comprises: a fuel heater for use in heating liquid fuel, said heater including an elongated hollow body defining a first central passage extending therethrough and first inner, second intermediate and third outer chambers disposed about said passage, first chamber and second chamber, respectively, with heater body wall portions of good heat transfer materials separating adjacent chambers and said first chamber from said passage, said passage including opposite liquid fuel inlet and outlet ends, a plurality of small diameter passages communicating longitudinally spaced portions of said passage with said first chamber, said second chamber including manifold vacuum air inlet and outlet means opening thereinto and said third chamber including liquid engine coolant inlet and outlet means opening thereinto.
Claim 3
Dependent Claim
32 words
The invention of claim 1 wherein said passage is substantially fully enclosed within said first chamber and said first and second chambers are substantially fully enclosed within said second and third chambers.
Claim 4
Dependent Claim
18 words
The invention of claim 2 wherein said first central passage includes axially spaced fuel filtering means disposed therein.
Claim 5
Dependent Claim
30 words
The invention of claim 2 wherein said second chamber includes magnetic means disposed therein supported from the external surfaces of said heater body wall portions defining said first inner chamber.
Claim 6
Dependent Claim
73 words
The invention of claim 1 including an auxiliary induction air inlet port, said outlet of said second intermediate chamber being operatively connected to said auxiliary induction air inlet port, said fuel inlet and outlet ends of said passage being serially connected in said fuel line and said liquid engine coolant inlet and liquid engine coolant outlet means of said third chamber being serially connected in one of said liquid engine coolant flow passages.
Claim 7
Dependent Claim
43 words
The invention of claim 1 wherein said elongated first central passages comprises a substantially straight cylindrical passage and said first, second and third chambers comprise successively larger diameter annular chambers disposed about said central passage, said first chamber and said second chamber, respectively.
Claim 8
Dependent Claim
48 words
The invention of claim 6 wherein said second chamber manifold vacuum air inlet and manifold vacuum air outlet means open into opposite end portions of said second chamber and said third chamber liquid engine coolant inlet and outlet means open into opposite end portions of said third chamber.
Claim 9
Dependent Claim
18 words
The invention of claim 7 wherein said first central passage includes axially spaced fuel filtering means disposed therein.