Kazuhiko Sugawara

Title: Kazuhiko Sugawara: Innovator in Exhaust Gas Recirculation Technology

Introduction

Kazuhiko Sugawara is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of automotive technology, particularly in exhaust gas recirculation systems. With a total of 2 patents, his work has had a considerable impact on improving engine efficiency and reducing emissions.

Latest Patents

Sugawara's latest patents include an exhaust gas recirculation control device and an exhaust gas recirculation control method. The exhaust gas recirculation control device is designed to manage an exhaust gas recirculation passage that circulates a portion of exhaust gas from an internal combustion engine. This system operates by directing exhaust flow from the turbine of a turbo supercharger to the intake passage, thereby enhancing engine performance. Additionally, the device features recirculation ratio setting means that establish a lower target recirculation ratio for smaller intake air amounts.

The second patent, the EGR control device, includes an estimate EGR ratio calculating portion that determines the estimated EGR ratio based on the fresh air flow amount at the joining portion with the EGR passage. This device also corrects the estimated EGR ratio based on the gaseous state inside the introduction passage when the EGR valve transitions from a closed to an open state. This innovation allows for a more accurate calculation of the joining portion EGR ratio, which is crucial for optimizing engine performance.

Career Highlights

Throughout his career, Kazuhiko Sugawara has worked with prominent companies in the automotive industry, including Nissan Motor Company Limited and Renault S.A.S. His experience in these organizations has allowed him to develop and refine his innovative technologies.

Collaborations

Sugawara has collaborated with notable colleagues such as Daisuke Takaki and Hirofumi Tsuchida. These partnerships have contributed to the advancement of his projects and the successful implementation of his inventions.

Conclusion

Kazuhiko Sugawara's contributions to exhaust gas recirculation technology demonstrate his commitment to innovation in the automotive sector. His patents reflect a deep understanding of engine dynamics and a dedication to improving environmental performance.