Intake system for engine

Internal-combustion engines – Means to whirl fluid before – upon – or after entry into... – Having multiple oxidant inlet means

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12318814, 123432, F02B 3100

Patent

active

053948459

ABSTRACT:
An engine intake system includes a primary port for introducing intake gas throughout an entire engine operating condition. A secondary port is provided with a gate valve which is opened in a high engine load condition for introducing the intake gas. A ratio of a tumble flow to a swirl flow is gradually increased as the gate valve is operated from an entirely closed condition to a fully open condition. According to this invention, ignition and combustion characteristics can be improved.

REFERENCES:
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patent: 4726343 (1988-02-01), Kruger
patent: 4727719 (1988-03-01), Mizutani
patent: 4760821 (1988-08-01), Aupor et al.
patent: 4762102 (1988-08-01), Kanda
patent: 5060616 (1991-10-01), Nakagawa et al.
patent: 5119784 (1992-06-01), Hashimoto et al.
patent: 5119785 (1992-06-01), Saito et al.

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