Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1977-11-15
1980-01-08
Myhre, Charles J.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123103B, 123103E, 123DIG11, 137489, 251 614, 261DIG18, F02D 1108
Patent
active
041822919
ABSTRACT:
A dashpot with a fast idle device for carburetor throttles comprises a dashpot for damping a rapid closing movement of the throttle and a fast idle device for causing an automobile to run at fast idle. The fast idle device has a vacuum chamber separated from an air chamber of the dashpot by a partition, and a rod passing through a hole made in the partition, which rod is secured to a diaphragm defining a part of the vacuum chamber and axially moved with vacuum induced into the vacuum chamber. For sealing a gap defined between the rod and the partition, there is provided with a resilent seal member which is disposed in the air chamber of the dashpot and comprises a first portion engaged with an annular groove made in the rod so that the first portion will move in conformity with the axial movement of the rod, a second portion disposed around the gap and airtightly contacting with the partition, and a third portion extending from the first portion to the second portion and having a shape such that the second portion is pressed on the partition more tightly with the vacuum increasing. The seal member is shaped for example like a cup.
REFERENCES:
patent: 3327695 (1967-06-01), Rhodes
patent: 3373765 (1968-03-01), McCarty
patent: 3730153 (1973-05-01), Harrison et al.
patent: 3744470 (1973-07-01), Clarke et al.
patent: 3881685 (1975-05-01), Hase et al.
patent: 3996904 (1976-12-01), Kobuki et al.
patent: 4051823 (1977-10-01), Mogi et al.
patent: 4060063 (1977-11-01), Hirasawa
Feinberg Craig R.
Hitachi , Ltd.
Myhre Charles J.
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