Abstract An intake air temperature automatic adjusting device for internal combustion engines, in which a temperature feeler having a heat-sensitive expanding compound sealed therein is provided in a cold air intake pipe and a push rod adapted to be operated by said feeler and having a crank-shaped arm formed at one end thereof is engaged at said arm with a cam having formed therein a crank-shaped slot composed of a first slot section and a second slot section and further a directional control valve operating incident to movement of said cam for regulating the amounts of air supplied from said cold air intake pipe and a hot air intake pipe connected thereto is provided in said cold air intake pipe, whereby when said push rod is operated by said feeler, said directional control valve is shifted between said cold air intake pipe and hot air intake pipe, with said arm sliding in the first slot section of the crank-shaped slot of the cam and, when said push rod is further operated in excess of its preset stroke, the amount of movement of said push rod is absorbed by said cam, with said arm sliding in the second section of said crank-shaped slot.
An intake air temperature automatic adjusting device for internal combustion engines, comprising a temperature feeler (3) having a heat-sensitive expanding compound sealed therein and provided in a cold air intake pipe (1), a push rod (13) adapted to be operated by said feeler (3) and having a crank-shaped arm (13a) at one end thereof, a cam (14) engaged with said arm (13a) and having formed therein a crank-shaped slot (14a) composed of a first slot section (14c) and a second slot section (14d), and a directional control valve (15) provided in said cold air intake pipe (1) for regulating the amount of air supplied from said cold air intake pipe (1) and the amount of air supplied from a hot air intake pipe (2) incident to movement of said cam (14), said directional control valve (15) being operated from saId feeler (3) through said push rod (13) to be shifted between said cold air intake pipe (1) and said hot air intake pipe (2) as said arm (13a) slides in the first slot section (14c) of the crank-shaped slot (14a) of said cam (14) and said cam (14) absorbing a movement of said push rod (13) in excess of its preset stroke after said directional control valve (15) has been immovably set in its position, with said arm (13a) sliding in the second slot section (14d) of said crank-shaped slot (14a).
Claim 2
Dependent Claim
231 words
An intake air temperature automatic adjusting device for internal combustion engines, comprising a temperature feeler (3) having a heat-sensitive expanding compound sealed therein and provided in a cold air intake pipe (1), a push rod (13) adapted to be operated by said feeler (3) and having a crank-shaped arm (13a) at one end thereof, a cam (14) engaged with said arm (13a) and having formed therein a crank-shaped slot (14a) composed of a first slot section (14c) and a second slot section (14d), and a directional control valve (15) provided in said cold air intake pipe (1) for regulating the amount of air supplied from said cold air intake pipe (1) and the amount of air supplied from a hot air intake pipe (2) incident to movement of said cam (14), said directional control valve (15) being operated from saId feeler (3) through said push rod (13) to be shifted between said cold air intake pipe (1) and said hot air intake pipe (2) as said arm (13a) slides in the first slot section (14c) of the crank-shaped slot (14a) of said cam (14) and said cam (14) absorbing a movement of said push rod (13) in excess of its preset stroke after said directional control valve (15) has been immovably set in its position, with said arm (13a) sliding in the second slot section (14d) of said crank-shaped slot (14a).
Claim 3
Dependent Claim
71 words
An air cleaner with the intake air temperature automatic adjusting device defined in claim 1, comprising a casing having an auxiliary air intake opening formed therein at a location other than where said main air intake pipe is connected, a plate valve adapted to open and close said auxiliary air intake opening and a diaphragm element to operate said plate valve connected to the intake manifold of an internal combustion engine.
Claim 4
Dependent Claim
31 words
An intake air temperature automatic adjusting device as defined in claim 1, wherein a spring (19) is provided to absorb a clearance between said arm (13a) and said crank-shaped slot (14a).