Daniel J Learned

Title: Innovations by Daniel J Learned

Introduction

Daniel J Learned is a notable inventor based in Peoria, IL (US). He has made significant contributions to the field of emissions purification technology, holding a total of 6 patents. His work primarily focuses on improving the efficiency and effectiveness of exhaust systems in internal combustion engines.

Latest Patents

One of his latest inventions is the "After-injection combustion exhaust purification system and method." This system is particularly well-suited for purifying exhaust from large lean burn diesel engines. It involves an after-injection of fuel through the engine fuel injector during the exhaust stroke, controlled by a computer that optimizes the amount of NOx reducing fuel injected based on engine conditions and exhaust temperature. This innovation significantly reduces NOx content while maintaining acceptable levels of HC emissions.

Another notable patent is the "Series combination catalytic converter." This invention addresses the challenges faced by lean burn engines that produce insufficient unburned hydrocarbons to effectively reduce NOx emissions. By injecting ethanol or another suitable hydrocarbon into the exhaust stream, this system works in conjunction with a deNOx catalytic converter to achieve satisfactory NOx reduction without compromising engine performance. The oxidation catalytic converter further ensures that any remaining unburned hydrocarbons are converted into harmless byproducts.

Career Highlights

Daniel J Learned is currently employed at Caterpillar Inc., where he continues to innovate and develop advanced technologies for emissions control. His work has been instrumental in enhancing the performance and environmental compliance of diesel engines.

Collaborations

Throughout his career, Daniel has collaborated with notable colleagues, including William H Lane and Randy N Peterson. These partnerships have contributed to the successful development of his patented technologies.

Conclusion

Daniel J Learned's contributions to emissions purification technology demonstrate his commitment to innovation and environmental sustainability. His patents reflect a deep understanding of engine performance and emissions control, making him a significant figure in the field.