Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
175 words
A fuel injection apparatus comprising: a plurality of intake tubes (16, 18) each having therein a throttle valve (20, 22); a fuel injection valve (36, 38) for injecting fuel into each of said intake tubes; a hot-wire type air flowmeter for measuring the quantity of intake air sucked into said intake tubes (16, 18); and a by-pass passage (47) for passing a quantity of air which is proportional to the intake air quantity and provided therein with a flow rate detecting portion (54) of said hot-wire type air flowmeter, wherein said by-pass passage (47) has an inlet portion (45, 46) for introducing the static pressure of the flow of intake air sucked into each intake tube (16, 18), a central portion for passing en bloc the air introduced from each intake tube and an outlet portion (50, 52) for discharging into each intake tube the air passing through said central portion, and the flow rate detecting portion (54) of said hot-wire type air flowmeter is disposed in the central portion of said by-pass passage (47).
Claim 2
Dependent Claim
175 words
A fuel injection apparatus comprising: a plurality of intake tubes (16, 18) each having therein a throttle valve (20, 22); a fuel injection valve (36, 38) for injecting fuel into each of said intake tubes; a hot-wire type air flowmeter for measuring the quantity of intake air sucked into said intake tubes (16, 18); and a by-pass passage (47) for passing a quantity of air which is proportional to the intake air quantity and provided therein with a flow rate detecting portion (54) of said hot-wire type air flowmeter, wherein said by-pass passage (47) has an inlet portion (45, 46) for introducing the static pressure of the flow of intake air sucked into each intake tube (16, 18), a central portion for passing en bloc the air introduced from each intake tube and an outlet portion (50, 52) for discharging into each intake tube the air passing through said central portion, and the flow rate detecting portion (54) of said hot-wire type air flowmeter is disposed in the central portion of said by-pass passage (47).
Claim 3
Dependent Claim
41 words
A fuel injection apparatus according to claim 1, wherein there are two of said intake tubes (16, 18) disposed in parallel, and the central portion of said by-pass passage (47) is disposed in the mutual side wall between said intake tubes.
Claim 4
Dependent Claim
70 words
A fuel injection apparatus according to claim 1, wherein each of said intake tubes (16, 18) accommodates therein said fuel injection valve (36, 38) and has therein an injector holder (40, 42) which is disposed such as to be substantially concentrical with the inner wall of the intake tube, and the inlet portion of said by-pass passage (47) is disposed on a side wall of said injector holder (40, 42).
Claim 5
Dependent Claim
141 words
A fuel injection apparatus according to claim 1, wherein there are two of said intake tubes (16, 18) disposed in parallel, each intake tube accommodating therein said fuel injection valve (36, 38) and having therein an injector holder (40, 42) which is disposed such as to be substantially concentrical with the inner wall of the intake tube, and the inlet portion of said by-pass passage (47) is disposed on a side wall of said injector holder (40, 42), while the central portion of said by-pass passage (47) is disposed in the mutual side wall between said intake tubes (16, 18), and further a passage (48, 49) providing communication between the inlet and central portions of said by-pass passage (47) is provided inside a mounting member (43, 44) for mounting said injector holder (40, 42) to the corresponding intake tube (16, 18).
Claim 6
Dependent Claim
31 words
A fuel injection apparatus according to claim 1, wherein the inlet portion of said by-pass passage (47) is disposed on a side wall of each of said intake tubes (16, 18).