Internal-combustion engines – Accessories – Covers – trays – vibrators – corrosion inhibitors – air filters
Patent
1978-10-10
1980-04-29
Lazarus, Ira S.
Internal-combustion engines
Accessories
Covers, trays, vibrators, corrosion inhibitors, air filters
123124R, 261 23A, 261 47, F02D 1700
Patent
active
042000831
ABSTRACT:
Disclosed is a split operation type internal combustion engine having a plurality of cylinders which are divided into a first cylinder group and a second cylinder group. The cylinders of the first cylinder group are connected to a first common intake manifold equipped with a first carburetor, and the cylinders of the second cylinder group are connected to a second common intake manifold equipped with a second carburetor. The second intake manifold is connected to the atmosphere via a bypass passage, and an air valve is arranged in the bypass passage. A first gear actuated by the accelerator pedal is operatively connected to the first throttle valve of the first carburetor and intermittently engaged with a second gear connected to the second throttle valve of the second carburetor. The firing operation is always carried out in the first cylinder group. When the level of the vacuum produced in the first intake manifold is greater than a predetermined level, the second throttle valve remains closed, and the air valve remains fully opened. At this time, air is fed into the second cylinder group. When the level of the vacuum produced in the first intake manifold is reduced below the predetermined level, the first gear comes into engagement with the second gear for opening the second throttle valve and, at the same time, the air valve is closed so that the firing operation is started in the second cylinder group.
REFERENCES:
patent: 2085818 (1937-07-01), Messinger
patent: 2114655 (1938-04-01), Leibing
patent: 3698371 (1972-10-01), Mitsuyama
patent: 4019479 (1977-04-01), Garabedian
patent: 4070994 (1978-01-01), Garabedian
patent: 4073278 (1978-02-01), Glenn
patent: 4106471 (1978-08-01), Nakajima
patent: 4109634 (1978-08-01), Garabedian
patent: 4130102 (1978-12-01), Churchill
Lazarus Ira S.
Toyota Jidosha Kogyo Kabushiki Kaisha
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