Engine cylinder head with augmented air or air/fuel mixture flow

Details Engine cylinder head with augmented air or air/fuel mixture flow Engine cylinder head with augmented air or air/fuel mixture flow

1989-10-10

1991-07-16

Nelli, Raymond A.

Internal-combustion engines

Means to whirl fluid before, upon, or after entry into...

Having multiple oxidant inlet means

123 26, 123188M, F02B 3100, F02B 4100, F01L 300

Patent

active

050315927

ABSTRACT:
There is disclosed an internal combustion (V-8) engine having an improved form of cylinder head and intake manifold for augmented combustion air flow and improved fuel mixing wherein the intake chamber immediately upstream of the intake valve is provided with two inlet ducts rather than the usual one inlet duct. The primary inlet duct may be conventional; the secondary inlet duct branches off in a direction more nearly parallel to the central axis of the cylinder and preferably connects to an inlet pipe which draws air through an independent air filter. The secondary inlet duct is provided with its own butterfly valve which can be independently controlled either automatically or manually and may be provided with a fuel injector. Secondary inlet ducts of the system can be attached on the outside to the inlet stacks (for injected engines), to an air breather base (on carburated engines), or to draw filtered air from the atmosphere directly into the system. Engines as disclosed thus are less sensitive to the natural intake pulses caused by inlet valve opening and closing and have better resistance to reversion of the intake flow.

REFERENCES:
patent: 2804862 (1957-09-01), Nedwidek
patent: 3097633 (1963-07-01), Klean
patent: 3313278 (1967-04-01), Thompson
patent: 3650261 (1972-03-01), Hutsell
patent: 3874357 (1975-04-01), List et al.
patent: 4060061 (1977-11-01), Wright
patent: 4466397 (1984-04-01), Kato et al.
patent: 4568265 (1986-02-01), Firey
patent: 4686944 (1987-08-01), Hiraoka et al.
patent: 4726337 (1988-02-01), Yoshida

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