Mitsuba strives to continue the provision of products that can travel to all corners of the world and satisfy users operating in diverse environments. To that end, we test our products for a multitude of qualities, such as heat resistance, shock resistance, and weather resistance, in order to improve product reliability.

To ensure reliability, we use our "built-in chamber" to test electrical products at low and high temperatures between -50°C and 80°C for the evaluation of temperature toughness and system operations in the actual vehicle.

The "chassis dynamo" reproduces the engine room environment under actual driving conditions on the chassis table. This testing system is used to check, at an early stage, the system operations of electrical products and the driving reliability under certain temperature conditions. In the "wind-tunnel test room", we conduct wiper performance evaluations under high-speed driving condition of 230 km/h. The "water channel" is used to check the water entry/movement channels when driving in water. Other test systems include the "anechoic chamber" for product improvement with noise reduction techniques, the "PIV test" for reducing vortex noise through flow visualization, and the "radio frequency anechoic chamber" for product improvement with a higher immunity to electromagnetic noise.

Mitsuba also promotes MBD (model-based development) to accomplish a timely development of in-vehicle electronic control systems with high levels of reliability and functional safety.

Management standards are established for the entire production system, from the early phase of development covering specification reviews and the actual development process to commercial production. Mitsuba uses cutting-edge development systems, including HILS (Hardware In the Loop Simulation), to ensure the safety of control systems for improved product reliability.

Wind-tunnel test room
(Wiper performance evaluation under high-speed driving condition)

Automobile chassis dynamo

Motorcycle chassis dynamo