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Toyota Motor Sales (TMS), U.S.A., Inc., unveiled the all-new 50-mile-per gallon rated third-generation Prius hybrid vehicle today at the 2009 North American International Auto show.
Celebrated as the benchmark for cars of the future, the Prius has delivered superior fuel economy and ultra-low emissions to more than one million owners worldwide for more than 10 years.
The midsize third-generation 2010 Prius will offer even better mileage ratings, enhanced performance, and innovative design features. It will be quieter, roomier, and equipped with advanced standard and available features such as a moonroof with solar panels, four driving modes, Intelligent Parking Assist (IPA) and steering wheel touch controls that display on the instrument panel.
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An Eco-Icon
The first-generation Prius entered the market in 1997 as the world’s first mass-produced hybrid. The name Prius, “to go before” in Latin, became symbolic of a car that was launched even before environmental awareness had become a mainstream social issue.
From the beginning, Toyota’s full-hybrid system was developed in-house and has become a driving force behind advanced vehicle technology. The company’s exclusive Hybrid Synergy Drive System was introduced in 2004 on the second-generation Prius. Since then, more than 670,000 have been sold in the U.S.
In designing the new, third-generation Prius, Toyota engineers combined a careful refinement of existing systems with an aggressive measure of new technology necessary for the future of automobiles.
Fuel Economy and Environmental Performance
The new Prius will be built using processes that reduce pollution in every stage of vehicle life, from production and driving, through to disposal.
The third-generation Prius extends its record of continuous improvement in fuel economy. The first-generation Prius, which was rated 41 EPA combined mpg, was replaced by the current model, which is EPA rated at 46 mpg, combined city/highway. Using a combination of technologies, fuel efficiency was increased to an estimated 50 miles per gallon for the new Prius.
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A larger and more powerful 1.8-liter Atkinson-cycle, four-cylinder engine will power the new Prius. Contrary to conventional wisdom, the larger engine actually helps improve highway mileage. By making more torque, the new engine can run at lower average rpm on the highway. When operating at lower rpm, the new engine uses less fuel. Mileage is especially improved in cold-start conditions and at higher speeds.
Use of an electric water pump and a new exhaust gas recirculation (EGR) system also contribute to the engine’s efficiency. The 1.8-liter Prius engine is the first Toyota power plant that requires no belts under the hood for better fuel economy and less potential maintenance.
A multi-information display panel that monitors fuel and energy consumption is standard. It provides feedback on the Prius’ efficiency using three different displays to help the driver acquire economical driving habits.
Unlike most other hybrid vehicles available, Prius has been a “full” hybrid since introduction. This allows it to run on engine alone, battery alone, or a combination of both. The system blends the best of parallel hybrid and series hybrid designs to achieve the ability to operate on the electric mode alone, and to charge the batteries while the car is running.
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2010 Toyota Prius: More Energetic & More Stylish Hybrid Car
The patented Hybrid Synergy Drive system in the 2010 Prius is 90 percent newly-developed with significant improvements over previous models.
The transaxle is lighter in weight and reduces torque losses by as much as 20 percent compared to the previous model.
The inverter, which converts direct current to alternating current, has a new direct cooling system to reduce size and weight.
Taken together, the inverter, motor and transaxle are smaller and 20 percent lighter.
A newly developed electronically controlled regenerative braking system has been adopted, with control logic optimized to enhance regeneration.
The new Prius will offer three alternative driving modes. EV-Drive Mode allows driving on battery power alone at low speeds for about a mile, if conditions permit. There is also a Power Mode, which increases sensitivity to throttle input for a sportier feel, and an Eco Mode, which helps the driver achieve their best mileage.
Cutting Edge Styling
In designing the new Prius, aerodynamic performance was an important factor. The goal was to create a beautiful silhouette, while not compromising function. Designers preserved the dynamic triangle form of the
current model--instantly recognizable as a Prius--but made alterations to the overall profile, pillar position and angle. The front pillar, extended forward, helps refine the performance-focusing, shaped form.
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The overall height of the Prius is the same, but the roof profile is altered by moving the top of the roof 3.9 inches to the rear. This emphasizes the wedge shape, and also allows for enhanced rear headroom and improved aerodynamics.
The design of the new Prius’ front and rear corners are sharp, sporty and aerodynamic. Strong side character lines, rising from front to rear, define the glazed geometric shape. Viewed from the rear, wider rear treads provide a solid, firmly rooted stance.
Dimensionally, the new Prius has the same wheelbase as the current generation. Overall length is slightly increased by 0.6 inches, in part by moving the front cowl forward.
