Engine cylinder head with augmented air or air/fuel mixture flow and method
US5031592A · kind A · utility
Inventors
Key dates
| Filing date | Oct 10, 1989 |
| Grant date | Jul 16, 1991 |
| Priority date | — |
| Expiry date | Oct 10, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.