Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
225 words
Apparatus for the generation of liquid vapour under pressure by means of heat from the combustion products of an internal combustion engine, said apparatus comprising an internal combustion engine having at least one release valve having a seat and an outlet, a reservoir for the liquid to be vapourised, an inlet duct to said reservoir for said combustion products, and a connection between said outlet of said release valve and said inlet duct for the combustion products, said duct communicating with the lower part of the interior of the reservoir, and a screen formed with a large number of small holes providing free passage for gas or liquid, said screen being arranged between said duct and the interior of said reservoir whereby the combustion products may bubble upwardly through liquid in the reservoir so as to transfer heat directly to the liquid, and said engine including at least one cylinder head and structure defining at least one chamber in contact with said cylinder head, and a second duct connected to supply liquid from said reservoir to said chamber, said chamber including a portion adjacent said seat of said release valve, said portion including narrow outlets opening into a region in said inlet duct immediately following said valve, whereby liquid is drawn from said chamber into said inlet duct due to reduced pressure in said region.
Claim 2
Dependent Claim
225 words
Apparatus for the generation of liquid vapour under pressure by means of heat from the combustion products of an internal combustion engine, said apparatus comprising an internal combustion engine having at least one release valve having a seat and an outlet, a reservoir for the liquid to be vapourised, an inlet duct to said reservoir for said combustion products, and a connection between said outlet of said release valve and said inlet duct for the combustion products, said duct communicating with the lower part of the interior of the reservoir, and a screen formed with a large number of small holes providing free passage for gas or liquid, said screen being arranged between said duct and the interior of said reservoir whereby the combustion products may bubble upwardly through liquid in the reservoir so as to transfer heat directly to the liquid, and said engine including at least one cylinder head and structure defining at least one chamber in contact with said cylinder head, and a second duct connected to supply liquid from said reservoir to said chamber, said chamber including a portion adjacent said seat of said release valve, said portion including narrow outlets opening into a region in said inlet duct immediately following said valve, whereby liquid is drawn from said chamber into said inlet duct due to reduced pressure in said region.
Claim 3
Dependent Claim
59 words
Apparatus according to claim 1, in which said chamber includes an annular diaphragm mounted to separate said annular portion from said region in said inlet duct, said annular diaphragm having a free inner edge bearing against said cylinder head adjacent said valve seat, said narrow openings being formed between said inner edge of said diaphragm and said cylinder head.
Claim 4
Dependent Claim
131 words
Apparatus according to claim 2, in which said edge of said diaphragm locates in an annular recess in said cylinder head, said recess being formed with a relatively sharp corner when seen in section, said edge of said diaphragm having a chamfered corner registering with said sharp corner in said recess to leave an annular passage, the side of said diaphragm adjacent said annular portion of said chamber being formed with a plurality of approximately radial slots connecting said portion of said chamber to said passage and said edge of said diaphragm being formed with a plurality of approximately axial slots connecting said annular passage to said region in said inlet duct, whereby the combination of said radial slots, said annular passage and said axial slots together constitute said narrow openings.
Claim 5
Dependent Claim
30 words
Apparatus according to claim 1, in which engaging surfaces of said release valve and said seat are provided with inserts of metal resistant to high-temperature gas erosion and thermal shock.
Claim 6
Dependent Claim
43 words
Apparatus according to claim 1, including a guide bore in which said release valve works, said bore having a wall which is extended to form a relatively thin, narrow-angled lip bearing against the side of said release valve to maintain an effective seal.