David Yu Zhang Chang

Title: Innovations by David Yu Zhang Chang

Introduction

David Yu Zhang Chang is an accomplished inventor based in Edwards, Illinois. He has made significant contributions to the field of engineering, particularly in gas engine technology. With a total of three patents to his name, Chang's work showcases his innovative approach to solving complex engineering challenges.

Latest Patents

One of Chang's latest patents is the "Cam actuated gas admission valve with electro-hydraulic trim control." This invention involves a gas engine that includes a combustion cylinder with an intake and exhaust valve. The gas admission valve assembly is designed to control gas flow into the intake, utilizing a trimmable electro-hydraulically actuatable gas admission valve. This technology enhances the efficiency and performance of gas engines.

Another notable patent is the "Gaseous fuel mixer assembly for engine and engine system operating method." This invention features a mixer housing that forms gas delivery openings and is strategically positioned across the flow path of the engine's intake conduit. The assembly includes a spool valve that can be moved using a piezoelectric actuator, allowing for precise control of gas distribution. This innovation improves the overall functionality of gaseous fuel systems in engines.

Career Highlights

David Yu Zhang Chang is currently employed at Caterpillar Inc., a leading company in the manufacturing of construction and mining equipment. His role at Caterpillar allows him to apply his inventive skills to develop advanced technologies that enhance engine performance and efficiency.

Collaborations

Chang has collaborated with notable colleagues, including David Todd Montgomery and Scott Byron Fiveland. These partnerships have fostered a creative environment that encourages the exchange of ideas and innovative solutions.

Conclusion

David Yu Zhang Chang's contributions to gas engine technology through his patents reflect his dedication to innovation and engineering excellence. His work continues to influence the industry and pave the way for future advancements in engine design.