Dual inlet port for internal combustion engine

Abstract

A system (10) and method for the induction of a fluid into the combustion chamber (15) of an internal combustion engine comprising a cylinder head (12) having at least one intake port (14) communicating with at least one combustion chamber (15) via a valve seat (22) disposed about the intake port (14), and at least one intake valve (16) provided with a valve head (20) having a valve face (21) engageable with the valve seat (22). The valve head (20) is connected to an elongate valve stem (18) that is mounted in the cylinder head (12) for controlling the intermittent flow of fluid from the intake port (14) to the combustion chamber (15). The system also includes first and second flow passages (30,32) that tangentially converge with the intake port (14) about the valve stem (18), preferably at the same acute angle relative to the valve stem and from substantially opposite directions, for setting in motion a balanced and complementary swirl of the fluid about the valve stem (18) in a clockwise or counterclockwise direction through intake port (14) towards combustion chamber (15).

Description

BACKGROUND OF THE INVENTION [0001] 1. Field Of The Invention [0002] The invention relates to a system for improving fuel flow in internal combustion engines, and more particularly to a system and method for the induction of a fluid in an internal combustion engine that enhances valve cylinder filling and scavenging to provide for improved charge stratification and efficient combustion. [0003] 2. Background [0004] Obstacles to the efficient flow of fluid to the combustion chambers of internal combustion engines exist in even the best of current inlet porting systems. Generally, a fluid, such as a fuel / air mixture, that is introduced into an intake port must navigate around the valve stem of the intake valve before the fuel / air mixture enters the combustion chamber. Because the valve stem asserts itself in the middle of the fluid stream, vortices and fluid disruptions present themselves and serve as obstacles for impeding the flow of the fluid through the intake port. In addition, the...

AI Technical Summary

Benefits of technology

"The invention provides an induction system and method for an internal combustion engine that allows for a balanced and complementary swirl of fuel and air around the valve stem, resulting in improved combustion and higher power output with lower fuel consumption. The system includes a cylinder head with at least one intake port and at least one intake valve for controlling the flow of fluid from the intake port to the combustion chamber. The method involves tangentially converging first and second flow passages with the intake port about the valve stem to set in motion a balanced and complementary swirl of the fluid about the valve stem. The first and second flow passages are preferably disposed at least 120 degrees apart from each other to facilitate a balanced and complementary flow of the fluid. The system and method provide a minimal disruption and kinetic energy loss for the fluid, resulting in improved combustion and power output."

Problems solved by technology

However, this design deliberately crosses the high-velocity, small (primary) inlet port, fuel-air mixture stream with that of the larger (secondary) inlet port so that the high-velocity stream redirects the larger stream by interference.

The manner in which this is done interrupts any swirl created for the fluid and results in significant energy losses for the fluid stream entering the combustion chamber.

While each of the primary and secondary port passages are oriented in tangential relationship to the valve stem 16, the flow pattern created for the fuel-air mixture passing through the passages (when the secondary throttle valve is open) is neither symmetrical nor in the form of a helical swirling action thereby resulting in energy loss to the fuel injection system.

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