David A Lane

US Patent:

51329166, Jul 21, 1992

Filed:

May 21, 1990

Appl. No.:

7/526416

Inventors:

Martin Gulaian - Cleveland Heights OH
David L. Lane - Vienna VA
Kenneth Loparo - Chesterland OH
Thomas J. Scheib - Chesterland OH

Assignee:

ELSAG International B.V. - Amsterdam

International Classification:

G06F 1546

US Classification:

364502

Abstract:

A method of estimating pH titration curves for use in the adaptive control of pH in a process, comprises gathering data points which each represent the ratio between a reagent added to the process and a flowrate to the process at a measured pH, storing the data points in a bin system according to pH, and using the stored data points to create a model of the titration curve for use in controlling the addition of reagent. Older points are replaced by newer points during the process to continuously update the model. The model was used to generate a gain schedule for operating a PI controller that is used in adding a reagent to the process.

US Patent:

57067759, Jan 13, 1998

Filed:

Apr 12, 1996

Appl. No.:

8/631476

Inventors:

Timothy S. Schweter - Cleveland OH
Joseph F. Buehner - Wadsworth OH
David M. Lane - Parma Heights OH

Assignee:

New Avenue Development Corp. - Parma Heights OH

International Classification:

F01L 702

US Classification:

12319012

Abstract:

A rotary valve system mounted to an internal combustion engines and method of operating the system primarily comprises a rotary valve mounted within a valve sleeve, which is in turn mounted within a longitudinal bore extending through an intake and exhaust manifold. Controllers vary the rotational and axial position of the valve sleeve, which provides the capability of adjusting the amount of fuel mixture entering the combustion chambers of the engine and the timing of the intake of such mixture. The method of operation includes in taking fuel mixture into, and evacuating exhaust gas from, an internal combustion engine, wherein fuel mixture flows into the manifold, is directed across the valve sleeve, through the rotary valve, across the sleeve, and into a combustion chamber. After combustion of the fuel mixture, the exhaust gases are directed from the combustion chamber through the sleeve, through the rotary valve and into an exhaust chamber. Then the exhaust gases flow through the sleeve and into an associated manifold exhaust passage.