Jiro Eto

Title: Jiro Eto and Hybrid Vehicle Powertrain Control

Introduction

Jiro Eto is an inventor associated with Toyota Jidosha Kabushiki Kaisha in Toyota, Japan. His work includes a patent for controlling power output in a hybrid vehicle.

Latest Patents

Eto is credited with 1 patent, titled “Method of Controlling Power Output Apparatus.” The invention describes a control method for a powertrain with an engine, drive shaft, two electric motors, and a coupling device. When the vehicle starts from rest, the electronic control unit runs it in electric-vehicle mode using one motor. Once the drive shaft’s operating point crosses from the underdrive region into the overdrive region, the system starts the engine and changes the coupling so the second motor’s shaft connects to the engine output shaft rather than the drive shaft. The vehicle then operates in hybrid mode, using the engine and both electric motors.

Career Highlights

Eto’s patent addresses the transition from electric-only operation to hybrid operation, coordinating engine startup and motor coupling as the vehicle’s operating conditions change. This approach is intended to support powertrain control across different driving modes.

Collaborations

Eto’s listed coworkers include Yasutomo Kawabata and Akihiko Kanamori. The patent is associated with Toyota Jidosha Kabushiki Kaisha.

Conclusion

Jiro Eto’s documented invention focuses on coordinating an engine, electric motors, and a coupling device to manage the transition between electric and hybrid vehicle operation.