Kazunari Azuma

Title: Kazunari Azuma: Gas Sensing and Exhaust Purging Innovations.

Introduction

Kazunari Azuma is an inventor associated with Kariya, Japan, and Denso Corporation. His patent work addresses gas sensing and exhaust-system control. The supplied information lists 2 patents.

Latest Patents

**Gas sensor.** This invention describes a sensor with measurement and reference gas chambers and two electrochemical cells. It detects currents through both cells, uses the second current to calculate the concentration of a specific gas component, and uses the first current to identify changes in oxygen concentration in the reference chamber. When such a change is detected, the sensor corrects the second current’s detected value.

**Control device for exhaust purging system.** This invention concerns an electronic control unit for an exhaust system with a NOx catalyst and a downstream air-fuel-ratio sensor. During purge control, the unit tracks the total reductant supplied to the catalyst and monitors the air-fuel ratio. It ends the purge routine when either the reductant total reaches its threshold or the air-fuel ratio meets the specified condition, whichever occurs first.

Career Highlights

Azuma’s listed inventions focus on sensing and control technologies for vehicle exhaust systems. The gas sensor addresses measurement reliability, while the purge-control device sets conditions for ending an exhaust-treatment routine.

Collaborations

The supplied information identifies Denso Corporation as Azuma’s company and Yusuke Kawamoto as a coworker. It does not specify their roles in the listed patents or describe particular collaborations.

Conclusion

Kazunari Azuma’s listed patent work reflects contributions to gas measurement and exhaust-purging control, with both inventions directed toward vehicle emissions systems.