Location History:
- Anjo, JP (1992 - 1998)
- Okazaki, JP (2003 - 2012)
Company Filing History:
12 out of 19,733 
7 out of 3,252 
6 out of 36,653 
Years Active: 1992-2012
Title: Hirohiko Yamada: Innovator in Knock Detection Technology
Introduction: Hirohiko Yamada, a prominent inventor based in Okazaki, Japan, has significantly contributed to the field of automotive technology with 21 patents to his name. His work focuses on advancements in knock detection systems, which are crucial for enhancing the performance and reliability of internal combustion engines.
Latest Patents: Among his latest innovations are two noteworthy patents: the knock detection device and the knock detection system diagnosis device. The knock detection device includes an A/D conversion part that processes the output signal of a knock sensor within a specified determination range. It features a time-frequency analysis part that simultaneously extracts data on frequency, time, and vibration intensity. This invention identifies time-varying patterns of vibration intensities across multiple frequency ranges, allowing for accurate knock determination based on a defined threshold.
Similarly, the knock detection system diagnosis device operates on the same principles but includes additional capabilities. It computes the lengths of time-varying patterns of vibration intensities that rise simultaneously across at least two frequency ranges, executing knock determination by comparing these lengths against a predetermined threshold. These innovations not only enhance engine performance but also contribute to the overall safety and efficiency of automotive technologies.
Career Highlights: Yamada's career includes significant roles at renowned companies such as Denso Corporation and Nippondenso Co., Ltd. His tenure with these organizations enabled him to apply his inventive skills and develop groundbreaking technologies that are pivotal in the automotive industry.
Collaborations: Throughout his career, Hirohiko Yamada has collaborated with notable associates, including Naoki Kokubo and Koji Sakakibara. These collaborations have further enriched his work and contributed to the successful implementation of his inventions.
Conclusion: Hirohiko Yamada stands out as an influential inventor in the automotive sector, particularly in knock detection technology. His extensive patent portfolio reflects his dedication to innovation and excellence. As the automotive industry continues to evolve, Yamada's contributions will undoubtedly play a vital role in shaping its future.