xcel
05-26-2009, 07:10 PM
http://www.cleanmpg.com/photos/data/2/AmericanFlag.jpg Lexus offers other high end hybrids but nothing like the_FE capability of the all-new HS 250h. (cleanmpg.com/forums/showthread.php?p=210461)
http://www.youtube.com/v/27b_GQD6Gg4&hl=en&fs=1Wayne Gerdes - CleanMPG (cleanmpg.com) - May 26, 2009
2010 Lexus HS 250h – Estimated at $35K and 35 mpgUS combined per the 08 EPA.
Lexus released details about its upcoming Prius platform based 2010 HS 250h claiming it will offer sustainable luxury with the inclusion of innovative engineering and intelligent, driver-inspired design.
The HS 250h designers and engineers created both a luxury car and a fuel miser that promises to reduce its impact on the planet with ecologically advanced materials and eliminating waste wherever possible.
HSD-II details...
A highly efficient engine design, an exhaust heat recovery system, major efforts to reduce parasitic losses, a new evaporative emissions system and driver-selectable driving modes all make notable contributions. Significant efforts were also made to minimize engine noise.
An Atkinson-cycle engine from the Camry Hybrid was chosen for its high efficiency and compatibility for the new HS. Peak output equals 147 HP and in combination with HSD-II, the HS generates 187 total system horsepower. Emissions never took a back seat as the HS is rated as an SULEV in CA and Tier 2 Bin 3 at the federal level.
The cooling system combines an aluminum engine radiator, hybrid system radiator, AC condenser and fan into a single assembly to minimize weight. The electric fan speed is controlled via Pulse Width Modulation to reduce both energy consumption and noise. Ducting of the cooling system prevents hot engine air recirculation that occurs at low speeds further enhancing efficiency.
Exhaust Heat Recovery System
Similar to the all-new 2010 Toyota Prius-III and Lexus RX 450h, the HS employs an Exhaust Heat Recovery System that captures the heat of spent exhaust gases to speed engine coolant warm-up and allow the hybrid system to stop the engine earlier and more often in the driving cycle when it’s not needed. The system can improve fuel efficiency by as much as seven percent in low temperatures.
Eco Mode
The HS 250h incorporates a drive-mode switch that improves fuel efficiency. Just like the Prius-III, the driver can select among four modes: Power, Normal, Eco and EV. Each switch position changes the rate of throttle opening for a given throttle-pedal angle. Normal mode has an essentially linear throttle action that gives naturally progressive power. In Eco mode, the throttle actuation on the engine and drive motor is reduced relative to the pedal angle to emphasize fuel economy. While Eco mode assists the driver in achieving improved fuel efficiency, overall the automatic A/C and hybrid battery coolant control helps achieve maximum fuel efficiency. Power mode can be selected for a more responsive feel when desired. Under certain circumstances, a new driver-selectable EV mode can allow the vehicle to be driven short distances using only the electric motors.
Aerodynamics
Ambitious goals were set from the outset to create a low-drag form in an attractive, spacious, yet compact package. A best-in-luxury class 0.27 coefficient of drag (Cd) adds in a number of ways which includes fuel economy first and foremost while at the same time, lowers noise.
Several measures were also taken under the car to promote airflow and reduce drag. Airflow resistance in the engine compartment was improved by optimizing the duct profiles around the radiator. Careful positioning of numerous underfloor covers plus added diffuser fins on the rear covers further reduce drag while enhancing straight-line control.
Fuel Economy
The HS 250 is expected to achieve an EPA-estimated 35 mpg city/34 mpg highway for a combined 35 mpg. Hypermilers can use the Eco mode in conjunction with the Hybrid System Indicatior (HIS) and eco-driving indicators to improve on these numbers of course. Overall fuel efficiency is more than 20-percent better than the most fuel-efficient model currently in the Lexus lineup while still offering 0-to-60 performance in 8.4.
Ecological materials
The HS 250h’s interior includes one of the most extensive implementations of bio-plastic material in an automobile to date. Known more formally as Ecological Plastic, the material uses plant sources as raw material and its use for parts of the interior upholstery in the HS 250h is a world first.
Besides the upholstery, Ecological Plastics are used in some injection-moldings plus foam and board components throughout the car, including trunk compartment trim, cowl side trim, door scuff plates, seat cushions and the package tray. Overall, approximately 30 percent of the interior and trunk are covered in Ecological Plastic, resulting in a reduction of carbon emissions by almost 20 percent over the life of the vehicle.
Infotainment
A new standard multi-media package includes voice recognition, Bluetooth® technology, integrated satellite radio and USB iPod connectivity operated via steering wheel controls or from the display screen. A multi-information display situated in the instrument cluster keeps the driver informed of the numerous actions controlled by the steering wheel-mounted switches.
As part of the all-new Lexus EnformTM navigation platform, the HS 250h also features XM NavTraffic® (informs the driver of current traffic conditions with real-time traffic displays ) and XM NavWeatherTM (provides near real-time weather conditions as well as spoken and nav-screen forecasts based on official National Weather Service data services).
Also standard is Touch Tracer (sensors on steering-wheel switches will show an image of switch layout in the HUD.
The high-visibility, electro-luminescent instrument cluster can help the driver to conserve fuel. A hybrid system indicator (HIS) displays the hybrid system output and regenerative charging status, simultaneously indicating the efficiency of the system related to driving style. An auxiliary eco driving indicator light further assists the driver in maintaining the most economical use of system power. The additional feedback provided has been proven to add several percent to ones own FE.
Safety
To help protect the driver and passengers, the body is designed to be extremely strong but strategically resilient to help absorb and distribute energy in the event of a crash. High strength steel components are carefully located in the body structure, doors and other areas to help ensure strength in key areas. This includes special rear side members that are specifically designed to conform to the latest safety regulations requiring compatibility with a high-speed rear impact.
The HS 250h incorporates a standard class-leading 10-airbag Supplemental Restraint system with dual-stage airbags front and knee airbags for driver and front passenger, side curtain airbags, and both front and rear seat-mounted side airbags to help protect front and rear passengers in certain types of severe frontal or side collisions. Additionally, front and outer rear seatbelts incorporate pretensioners with force-limiters to help protect occupants in the event of a severe frontal collision. Also, active head restraints are provided for the front seats.
An optional Pre-Collision System (PCS) with Dynamic Radar Cruise Control and Driver Monitor uses millimeter-wave radar to measure and maintain a pre-set following distance from a vehicle traveling ahead. The radar sensor can detect certain obstacles in front of the car, and a PCS computer with vehicle speed, steering angle and yaw-rate inputs helps to determine whether a collision is highly possible. In such a situation, PCS alerts the driver with audible and visual warnings, preemptively retracts front seat belts and pre-initializes Brake Assist so that increased braking will be applied the instant the driver depresses the brake pedal.
EPS
As one of the leading users of electric power steering (EPS) in its vehicles, Lexus continues to improve upon its class leading EPS solutions. The HS 250h includes a vehicle-speed sensitive EPA optimized to provide ideal steering feel at any speed. Inertia compensation control, friction feedback and recovery control assist is added to improve steering feel and effort. The HS EPS system also improves fuel economy by eliminating the need for a belt driven-pump and its associated belts and fluid, further benefiting the environment.
The Lexus HS 250h is covered like all new Lexus vehicles with a comprehensive 48-month/50,000-mile basic limited warranty with roadside assistance for 48-months and unlimited miles. Powertrain and restraint system coverage is provided for 72 months/70,000 miles. Corrosion perforation protection is covered for 72 months, regardless of mileage. The hybrid-related components, including the HV battery, battery-control module, hybrid control module and inverter with converter, are covered for eight years/100,000 miles.
http://www.youtube.com/v/27b_GQD6Gg4&hl=en&fs=1Wayne Gerdes - CleanMPG (cleanmpg.com) - May 26, 2009
2010 Lexus HS 250h – Estimated at $35K and 35 mpgUS combined per the 08 EPA.
Lexus released details about its upcoming Prius platform based 2010 HS 250h claiming it will offer sustainable luxury with the inclusion of innovative engineering and intelligent, driver-inspired design.
The HS 250h designers and engineers created both a luxury car and a fuel miser that promises to reduce its impact on the planet with ecologically advanced materials and eliminating waste wherever possible.
HSD-II details...
A highly efficient engine design, an exhaust heat recovery system, major efforts to reduce parasitic losses, a new evaporative emissions system and driver-selectable driving modes all make notable contributions. Significant efforts were also made to minimize engine noise.
An Atkinson-cycle engine from the Camry Hybrid was chosen for its high efficiency and compatibility for the new HS. Peak output equals 147 HP and in combination with HSD-II, the HS generates 187 total system horsepower. Emissions never took a back seat as the HS is rated as an SULEV in CA and Tier 2 Bin 3 at the federal level.
The cooling system combines an aluminum engine radiator, hybrid system radiator, AC condenser and fan into a single assembly to minimize weight. The electric fan speed is controlled via Pulse Width Modulation to reduce both energy consumption and noise. Ducting of the cooling system prevents hot engine air recirculation that occurs at low speeds further enhancing efficiency.
Exhaust Heat Recovery System
Similar to the all-new 2010 Toyota Prius-III and Lexus RX 450h, the HS employs an Exhaust Heat Recovery System that captures the heat of spent exhaust gases to speed engine coolant warm-up and allow the hybrid system to stop the engine earlier and more often in the driving cycle when it’s not needed. The system can improve fuel efficiency by as much as seven percent in low temperatures.
Eco Mode
The HS 250h incorporates a drive-mode switch that improves fuel efficiency. Just like the Prius-III, the driver can select among four modes: Power, Normal, Eco and EV. Each switch position changes the rate of throttle opening for a given throttle-pedal angle. Normal mode has an essentially linear throttle action that gives naturally progressive power. In Eco mode, the throttle actuation on the engine and drive motor is reduced relative to the pedal angle to emphasize fuel economy. While Eco mode assists the driver in achieving improved fuel efficiency, overall the automatic A/C and hybrid battery coolant control helps achieve maximum fuel efficiency. Power mode can be selected for a more responsive feel when desired. Under certain circumstances, a new driver-selectable EV mode can allow the vehicle to be driven short distances using only the electric motors.
Aerodynamics
Ambitious goals were set from the outset to create a low-drag form in an attractive, spacious, yet compact package. A best-in-luxury class 0.27 coefficient of drag (Cd) adds in a number of ways which includes fuel economy first and foremost while at the same time, lowers noise.
Several measures were also taken under the car to promote airflow and reduce drag. Airflow resistance in the engine compartment was improved by optimizing the duct profiles around the radiator. Careful positioning of numerous underfloor covers plus added diffuser fins on the rear covers further reduce drag while enhancing straight-line control.
Fuel Economy
The HS 250 is expected to achieve an EPA-estimated 35 mpg city/34 mpg highway for a combined 35 mpg. Hypermilers can use the Eco mode in conjunction with the Hybrid System Indicatior (HIS) and eco-driving indicators to improve on these numbers of course. Overall fuel efficiency is more than 20-percent better than the most fuel-efficient model currently in the Lexus lineup while still offering 0-to-60 performance in 8.4.
Ecological materials
The HS 250h’s interior includes one of the most extensive implementations of bio-plastic material in an automobile to date. Known more formally as Ecological Plastic, the material uses plant sources as raw material and its use for parts of the interior upholstery in the HS 250h is a world first.
Besides the upholstery, Ecological Plastics are used in some injection-moldings plus foam and board components throughout the car, including trunk compartment trim, cowl side trim, door scuff plates, seat cushions and the package tray. Overall, approximately 30 percent of the interior and trunk are covered in Ecological Plastic, resulting in a reduction of carbon emissions by almost 20 percent over the life of the vehicle.
Infotainment
A new standard multi-media package includes voice recognition, Bluetooth® technology, integrated satellite radio and USB iPod connectivity operated via steering wheel controls or from the display screen. A multi-information display situated in the instrument cluster keeps the driver informed of the numerous actions controlled by the steering wheel-mounted switches.
As part of the all-new Lexus EnformTM navigation platform, the HS 250h also features XM NavTraffic® (informs the driver of current traffic conditions with real-time traffic displays ) and XM NavWeatherTM (provides near real-time weather conditions as well as spoken and nav-screen forecasts based on official National Weather Service data services).
Also standard is Touch Tracer (sensors on steering-wheel switches will show an image of switch layout in the HUD.
The high-visibility, electro-luminescent instrument cluster can help the driver to conserve fuel. A hybrid system indicator (HIS) displays the hybrid system output and regenerative charging status, simultaneously indicating the efficiency of the system related to driving style. An auxiliary eco driving indicator light further assists the driver in maintaining the most economical use of system power. The additional feedback provided has been proven to add several percent to ones own FE.
Safety
To help protect the driver and passengers, the body is designed to be extremely strong but strategically resilient to help absorb and distribute energy in the event of a crash. High strength steel components are carefully located in the body structure, doors and other areas to help ensure strength in key areas. This includes special rear side members that are specifically designed to conform to the latest safety regulations requiring compatibility with a high-speed rear impact.
The HS 250h incorporates a standard class-leading 10-airbag Supplemental Restraint system with dual-stage airbags front and knee airbags for driver and front passenger, side curtain airbags, and both front and rear seat-mounted side airbags to help protect front and rear passengers in certain types of severe frontal or side collisions. Additionally, front and outer rear seatbelts incorporate pretensioners with force-limiters to help protect occupants in the event of a severe frontal collision. Also, active head restraints are provided for the front seats.
An optional Pre-Collision System (PCS) with Dynamic Radar Cruise Control and Driver Monitor uses millimeter-wave radar to measure and maintain a pre-set following distance from a vehicle traveling ahead. The radar sensor can detect certain obstacles in front of the car, and a PCS computer with vehicle speed, steering angle and yaw-rate inputs helps to determine whether a collision is highly possible. In such a situation, PCS alerts the driver with audible and visual warnings, preemptively retracts front seat belts and pre-initializes Brake Assist so that increased braking will be applied the instant the driver depresses the brake pedal.
EPS
As one of the leading users of electric power steering (EPS) in its vehicles, Lexus continues to improve upon its class leading EPS solutions. The HS 250h includes a vehicle-speed sensitive EPA optimized to provide ideal steering feel at any speed. Inertia compensation control, friction feedback and recovery control assist is added to improve steering feel and effort. The HS EPS system also improves fuel economy by eliminating the need for a belt driven-pump and its associated belts and fluid, further benefiting the environment.
The Lexus HS 250h is covered like all new Lexus vehicles with a comprehensive 48-month/50,000-mile basic limited warranty with roadside assistance for 48-months and unlimited miles. Powertrain and restraint system coverage is provided for 72 months/70,000 miles. Corrosion perforation protection is covered for 72 months, regardless of mileage. The hybrid-related components, including the HV battery, battery-control module, hybrid control module and inverter with converter, are covered for eight years/100,000 miles.