Sho Ohtsu

Title: **Sho Ohtsu: Innovating Compression Ratio Control for Internal Combustion Engines**

Introduction

Sho Ohtsu, an accomplished inventor based in Zama, Japan, holds an impressive portfolio of four patents in the realm of automotive technology. His inventive work has significantly contributed to advancements in internal combustion engine efficiency, particularly through innovative control devices that enhance engine performance.

Latest Patents

Among his latest inventions, Ohtsu developed a "Control Device for Compression Ratio Variable Internal Combustion Engine." This device features a compression ratio variable mechanism that adjusts the engine's compression ratio based on the control shaft's rotational position. It incorporates a detection unit capable of assessing the actual compression ratio. Notably, in specific operating conditions, like right after engine startup, the control device enables a reference position learning operation that can quickly restore optimal compression ratio control even in the presence of abnormalities.

Another remarkable invention by Ohtsu is the "Internal Combustion Engine Control Device and Control Method." This technology involves calculating a target compression ratio after a preset time based on the air intake volume drawn into a cylinder. It generates control commands for an electric motor managing the compression ratio mechanism, ensuring that the actual compression ratio matches the target effectively, thereby enhancing engine responsiveness and performance.

Career Highlights

Currently, Ohtsu is employed at Nissan Motor Company Limited, a global powerhouse in the automotive industry. His work at Nissan is focused on innovating technology that enhances vehicle performance and efficiency, reflecting the company's commitment to sustainability and advanced engineering practices.

Collaborations

Throughout his career, Ohtsu has collaborated with notable colleagues such as Ryosuke Hiyoshi and Shinobu Kamada. Together, they share a passion for innovation and strive to push the boundaries of automotive technology, contributing to Nissan's reputation as a leader in the automotive field.

Conclusion

Sho Ohtsu's contributions to the world of internal combustion engines showcase his inventive spirit and deep understanding of automotive technology. With his focus on enhancing compression ratio control, Ohtsu continues to play a vital role in improving engine efficiency and performance, making significant strides in the industry. His innovative patents not only highlight his expertise but also reflect the potential future advancements in vehicle technology.