- Fuel consumption in top for gasoline-powered vehicles*1 (30.0 km/L in JC08-mode) and saving on resources by reducing the weight by approx. 60 kg -
|-||We have achieved an improvement of approximately 40% in fuel consumption*2 by adopting the newly developed e:S Technology, which maximizes energy efficiency while thoroughly enhancing existing technologies from the viewpoint of power train evolution, vehicle evolution and energy management. We have delivered 2 wheel-drive vehicles with a low fuel consumption of 30 km/L in JC08 mode, which is in the top for gasoline-powered vehicles, and all the vehicles are eligible for the eco car tax reduction of 75%.|
|-||In the LCA (Life Cycle Assessment), CO2 emissions have been reduced by approximately 20%*3 at all stages, not only at the running stage, but also from the production to disposal stages.|
|-||We have used sophisticated equipment that takes account of actual fuel consumption and supports eco driving in a way that is easy to understand.|
|*1||As of September 2011. Except for hybrid cars. Based on Daihatsu research.|
|*2||Comparison with the Mira (2WD/CVT). Based on Daihatsu research (internal measurement values)|
|*3||Comparison with similarly ranked vehicles. Based on Daihatsu research (internal measurement values)|
|The Newly Developed e:S Technology|
(1) Power Train Evolution
- The new engine provides the ultimate in combustion efficiency and energy loss reduction
- - Improved combustion efficiency by refining the particles sprayed from the injector and enhancing the compression ratio (from 10.8 to 11.3).
- - Mechanical loss has been minimized by combining improvements down to every detail including modification of the oil seal, tension reduction in the piston rings, reduction in chain tension by cutting chain width, and the adoption of the i-EGR system.
- - Coordinated control of engine and CVT using an electronic throttle. Maintains a state of maximum efficiency in accordance with a range of driving conditions.
- More improvements to power transmission efficiency with CVT
- - Improved power transmission efficiency by lowering CVT control pressure and improving oil discharge with a high-efficiency oil pump.
- - Lower engine load by optimizing the transmission gear ratio (high gears) based on cutting the weight of the vehicles, reducing running resistance and improving power transmission efficiency.
(2) Vehicle Evolution
- Weight reduction of around 60 kg* (saving resources) by streamlining the shell body
* Comparison with the Mira (2WD/CVT). Based on Daihatsu research
- - Delivered a weight reduction of around 30 kg* by streamlining the shell body on condition of maintaining the body rigidity necessary for safety and ride quality.
- - Achieved weight reduction through an exhaustive review of every single interior component including reducing the weight of the seat frame and thinning the thickness of resin components such as door trims and instrument panels.
- - Reduced the weight of the CVT unit for idle reduction by using integrated molding for the secondary sensing gear and piston, using aluminum for the oil pump cover and the planetary carrier, and thinning the thickness of the CVT case.
- Lower running resistance
- - Lowered air resistance by conducting CAE simulations and wind tunnel tests as of the design stage to improve the shape of the front corners and slow down under-floor flow.
- - Lowered rolling resistance by reducing weight and improving bearings and brakes.
(3) Energy Management
- New "eco IDLE" with a pre-stop function
* As of September 2011. Based on Daihatsu research
- - As a gasoline-powered CVT vehicle, the first in the world * to adopt a pre-stop function for idle reduction. Further improvement to fuel consumption by increasing the duration of no idling by stopping the engine when vehicle speed falls below 7 km/h.
- - Lightweight and compact mechanism by reducing dedicated components for idle reduction
- Eco power generation control (deceleration energy regenerative function)
- - Enhanced the function whereby the alternator converts the kinetic energy of a decelerating vehicle into electric energy to regenerate the battery. By improving the charge acceptance properties of the lead battery to increase the charge held, as well as increasing the amount of energy generated by the alternator at deceleration, substantially suppressed power generation by the alternator at normal operation and when accelerating to reduce engine load.