US 5,704,328 A · Method to control a short runner bypass valve in the intake manifold of an internal combustion engine

Abstract

According to the present invention, a system for controlling a runner system in an internal combustion engine is provided which optimizes the available torque output over a broad range of engine speeds. The system generally includes opening or closing a short runner bypass valve system according to changes in engine speed. More particularly, the method comprises sensing a speed of an engine, determining a current open/closed mode of a short runner bypass valve system, calculating a time to a short runner bypass valve system switch point, including compensating for a time period required to switch between open and closed modes, and switching the short runner bypass valve open/closed mode at a given time if the current open/closed mode is not equal to a desired mode.

Claims14

Dependent claims

A method of setting a runner valve system including a plurality of long and short runners interconnecting a plenum and combustion chambers in an internal combustion engine between a desired mode and a non-desired mode comprising:

determining a current mode of said runner valve system;
calculating a time period to a runner valve system switch point including compensating for a time required to switch between said non-desired mode and said desired mode;
and
setting said runner valve system to said desired mode after the expiration of said time period if said current mode is not equal to said desired mode.

1 more element

A method of controlling a runner system including a plurality of long and short runners interconnecting a plenum and combustion chambers in an internal combustion engine comprising:

determining if a current engine speed is less than a first pre-selected engine speed, greater than or equal to said first runner system engine speed switch point and/or less than or equal to a second pre-selected engine speed, or greater than said second pre-selected engine speed;
determining an accelerating, decelerating, or steady state of said internal combustion engine;
determining a time period until said runner system should be switched between an open mode and a closed mode;
and
setting said runner system to a desired mode at the expiration of said time period based on said current engine speed and said state of said internal combustion engine.

2 more elements

Dependencies are inferred from the claim text.

Method to control a short runner bypass valve in the intake manifold of an internal combustion engine

Life of this patent

Method to control a short runner bypass valve in the intake manifold of an internal combustion engine

Life of this patent

Abstract

Claims14