Aerodynamics (Development Work on the MIRAGE)
The MIRAGE achieved a very low aerodynamic drag which realizes a outstanding fuel economy.
Drag coefficient is a top level in the class.
From the early stage of the development, we performed a series of aerodynamic analyses using Computational Fluid Dynamics (CFD) and wind tunnel tests. So the vehicle harmonizes a good styling and a high level of aerodynamic performance, which has a big impact on fuel economy. Not only the streamlined exterior design, but also the engine cooling air flow which is well controlled by optimizing the front intake, plays a role in reducing the aerodynamic drag.
The air dams and the under covers reduce the aerodynamic drag of the tires and suspensions effectively. As a result, the MIRAGE has achieved a CD value (drag coefficient) of 0.27, which is top class in the A segment.
Aerodynamic Body Design
We optimized a shape for the side of the body that controls the separation of the air flow around the front corner. We also designed the optimal sleek shape from the B-pillar to the rear of the body to reduce the negative pressure area of the wake, and at the same time, made the end corner sharp to stabilize the separation point of the air flow that reduces drag.
We designed the roof so that it slopes gently down from the top to the spoiler end, reducing the negative pressure area to reduce drag in the same way as for the side of the body.
We optimized the rear spoiler design while unify high mount stop lamp to realize an optimal flow field for drag reduction.