Company Filing History:
Years Active: 1997-1999
Title: Hiroki Munakata: Innovator in Air-Fuel Ratio Control Systems
Introduction
Hiroki Munakata is a prominent inventor based in Wako, Japan, known for his significant contributions to the field of internal combustion engine technology. With a total of nine patents to his name, Munakata has made strides in enhancing the efficiency and performance of engine systems.
Latest Patents
One of Munakata's latest patents is an air-fuel ratio control system for internal combustion engines. This innovative system includes an air-fuel ratio sensor positioned in the exhaust system of the engine. The electronic control unit (ECU) estimates the air-fuel ratio of the mixture supplied to each cylinder individually, utilizing an observer to monitor the internal operational state of the exhaust system. This is based on a model that represents the behavior of the exhaust system. The system calculates cylinder-specific air-fuel ratio control amounts to ensure that the estimated air-fuel ratio converges to a desired value. Additionally, the control amounts are limited within an allowable range defined by upper and lower limit values, which are determined by factors such as engine rotational speed and atmospheric pressure.
Another notable patent by Munakata is also focused on an air-fuel ratio control system for internal combustion engines. This system features multiple cylinders and an exhaust system, where the air-fuel ratio of exhaust gases is detected by a sensor. The estimated air-fuel ratio for each cylinder is derived from the sensor's output, employing an observer to assess the exhaust system's internal state. Feedback control is executed to adjust the fuel supply to each cylinder, ensuring that the air-fuel ratio aligns with the desired value. The controller adapts parameters for feedback control based on the estimated air-fuel ratio for each cylinder.
Career Highlights
Hiroki Munakata has established himself as a key figure in the automotive industry, particularly through his work at Honda Giken Kogyo Kabushiki Kaisha. His innovative approaches to air-fuel ratio control systems have contributed to advancements in engine performance and efficiency.
Collaborations
Munakata has collaborated with notable colleagues, including Norio Suzuki and Shusuke Akazaki, to further enhance the development of engine technologies. Their combined expertise has played a crucial role in the success of their projects.
Conclusion
Hiroki Munakata's contributions to the field of internal combustion engines, particularly through his
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