Jun Takemura

Title: Innovations of Jun Takemura

Introduction

Jun Takemura is a notable inventor based in Toyota, Japan. He has made significant contributions to the field of internal combustion engines, holding a total of 14 patents. His work focuses on enhancing engine efficiency and reducing emissions, which is crucial in today's automotive industry.

Latest Patents

One of Takemura's latest patents is for a direct injection internal combustion engine and its controlling method. This innovative engine design includes catalysts for purifying exhaust gases, strategically placed in the exhaust passage. The control device manages the engine's operation to warm up or activate these catalysts effectively. The first control part adjusts the air-fuel ratio to be close to the stoichiometric ratio, while the ignition timing is set after the top dead center. The second control part further optimizes the engine's performance by adjusting the ignition timing before the top dead center. This dual control mechanism enhances after-burning stability and raises exhaust temperatures, allowing for better emissions control.

Another significant patent by Takemura involves a cylinder injection type internal combustion engine. This design allows for stratified combustion, which increases the temperature of the exhaust-gas purifying catalyst without raising fuel consumption. The electronic control unit plays a vital role in managing fuel injection directly into the combustion chamber during the compression stroke, maintaining an optimal air-fuel ratio.

Career Highlights

Throughout his career, Jun Takemura has worked with prominent companies in the automotive sector, including Mitsubishi Motors Corporation. His experience in these organizations has contributed to his expertise in engine technology and innovation.

Collaborations

Takemura has collaborated with several talented individuals in his field, including Hiromitsu Ando and Shigeo Yamamoto. Their combined efforts have led to advancements in engine design and efficiency.

Conclusion

Jun Takemura's contributions to the automotive industry through his innovative patents and collaborations highlight his role as a leading inventor in internal combustion engine technology. His work continues to influence the development of more efficient and environmentally friendly engines.