Company Filing History:
Years Active: 1995-1998
Title: J P Perr - Innovator in Fuel Injection Technology
Introduction
J P Perr is a notable inventor based in Columbus, IN (US), recognized for his contributions to fuel injection technology. With a total of 3 patents to his name, he has made significant advancements in the field, particularly through his work at Cummins Engine Company, Inc.
Latest Patents
One of J P Perr's latest patents is the injection rate shaping nozzle assembly for a fuel injector. This innovative assembly includes a closed nozzle valve element and a rate shaping control device that features an injection spill circuit. The purpose of this design is to spill a portion of the fuel being injected, thereby producing a predetermined time-varying change in the flow rate of fuel injected into a combustion chamber. The spill circuit is equipped with a spill passage that is integrally formed in the nozzle valve element. The rate shaping control may also incorporate a spill valve to manage the spill flow through the circuit, allowing for a low injection flow rate followed by a high injection flow rate. Additionally, the spill passage can communicate with the injector nozzle cavity between injection events or be blocked to prevent spill flow during those intervals. The rate shaping control device may further include a spill accelerating device, such as a spill chamber formed in the nozzle valve element, to create a rapid increase in the spill flow rate. Another embodiment of the rate shaping device may consist of a throttling passage that is integrally formed in the nozzle valve element, which varies the rate at which fuel pressure in the nozzle cavity increases, thus affecting the flow rate through the injector orifices.
Career Highlights
Throughout his career, J P Perr has demonstrated a strong commitment to innovation in fuel injection systems. His work at Cummins Engine Company, Inc. has positioned him as a key player in the development of advanced fuel injection technologies.
Collaborations
J P Perr has collaborated with several talented individuals in his field, including B M Yen and Lester L Peters. These partnerships have contributed to the successful development of his patented technologies.
Conclusion
J P Perr's contributions to fuel injection technology through his innovative patents and collaborations highlight his significant role in advancing this critical area of engineering. His work continues to influence the industry and improve fuel efficiency in combustion engines.