Perry J Donnelly

Title: Perry J. Donnelly and His Air-Fuel Control Invention.

Introduction

Perry J. Donnelly is an inventor associated with Columbus, Indiana, and Cummins Engine Company, Inc. His patent work addresses fuel control in internal combustion engines, with a focus on balancing engine response and emissions.

Latest Patents

Donnelly’s listed patent, “Air Fuel Control for a PT Fuel System,” describes a system that regulates fuel flow according to air pressure in an engine’s intake manifold. A diaphragm-and-piston assembly responds to manifold pressure, while a barrel-and-plunger metering device adjusts fuel delivery through a sequence of specially shaped inlet regions.

The design aims to meter fuel quickly and precisely as air pressure changes. Its staged port arrangement supports cold starts and acceleration, helps reduce smoke, noise, and emissions during transient operation, and allows full fuel flow when the plunger reaches the larger inlet port. Donnelly is credited with 1 patent in the information provided.

Career Highlights

Donnelly’s documented contribution centers on the engineering of a PT fuel-system control that links fuel metering to intake-manifold pressure. The patent describes a mechanism intended to improve transient engine response while managing fuel delivery across different operating conditions.

Collaborations

Donnelly is associated with Cummins Engine Company, Inc. The listed coworkers connected with his work are George L. Muntean and Kevin W. Westerson.

Conclusion

Perry J. Donnelly’s patent presents a staged air-fuel control approach designed to support responsive engine performance while addressing emissions and drivability considerations.