Hajime Shimizu is a prominent inventor based in Susono, Japan. He has made significant contributions to the fields of battery cooling devices and internal combustion engine control systems. With a total of 10 patents to his name, Shimizu continues to push the boundaries of innovation in automotive technology.

Latest Patents

One of Shimizu's latest inventions is a battery cooling device designed to enhance the efficiency and safety of battery systems. This device includes multiple coolers that utilize insulating oil for cooling. It features a communication pipe that connects the coolers, allowing the insulating oil to flow through. A water level sensor is integrated into the vertical portion of the communication pipe to monitor water levels. Additionally, a shutdown valve is included, which the control device manages to close when the water level sensor detects a rise above a predetermined threshold.

Another notable patent is a control device for internal combustion engines. This device is equipped with a combustion control part that performs successive fuel injections to achieve premix charged compression ignition. The system is designed to create a two-peak pressure waveform, ensuring that the peak ratio falls within a specific range. The combustion control part also calculates the ignition delay time for the second main fuel injection and adjusts the target injection amount accordingly.

Career Highlights

Hajime Shimizu is currently employed at Toyota Jidosha Kabushiki Kaisha, a leading automotive manufacturer. His work at Toyota has allowed him to develop innovative technologies that enhance vehicle performance and efficiency. His expertise in battery and engine control systems has positioned him as a key figure in automotive research and development.

Collaborations

Shimizu has collaborated with notable colleagues, including Masahiro Nagae and Hiroki Murata. These partnerships have fostered a creative environment that encourages the development of groundbreaking technologies in the automotive sector.

Conclusion

Hajime Shimizu is a distinguished inventor whose work in battery cooling and engine control technologies has made a significant impact on the automotive industry. His innovative spirit and dedication to research continue to drive advancements in vehicle technology.

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