To further improve fuel economy, all of the Theta II major driveline and cooling system components have been optimized to reduce friction, while the crankcase has been filled with low friction oil. Hybrid Power Control (HPC) management software automatically shuts off the engine when the vehicle comes to a halt, cutting emissions to zero. When pressure is reapplied to the accelerator pedal, the Hybrid Starter Generator (HSG) automatically restarts the engine. This control strategy assures that maximum efficiency is achieved during gentle acceleration and greater power is immediately available during full acceleration. During deceleration, braking regeneration comes into play. Sonata Hybrid also features "smart brake" technology in which braking input over-rides accelerator pedal input.
The high-tech, all-aluminum, 16-valve engine also features Continuously Variable Valve Timing (CVVT) on both camshafts and newly developed engine components to reduce friction. This optimized Theta II engine achieves 10 percent better fuel consumption over a conventional Theta II engine.
Hyundai Hybrid Blue Drive uses the company's proprietary 6-speed automatic transmission rather than a conventional hybrid's CVT. Hyundai's strategy involves an adaptation of the modular 6-speed transmission, replacing the torque converter with an electric motor and high-efficiency oil pump. This technique uses a traditional step-shift 6-speed transmission rather than a CVT to provide a more traditional shift feel that is preferred by customers and sometimes artificially replicated in CVT applications. This saves on cost, making the Hyundai Hybrid Blue Drive system a better value. It is a more robust and elegantly simple solution to a complicated engineering challenge.
Fuel efficiency improvements are evident throughout Sonata Hybrid. For example, the top three gear ratios in the transmission have been extended to ensure the engine runs at lower RPMs, the electric motor-assisted steering system reduces demands on the engine, and low resistance tires further optimize fuel economy.
Hybrid Blue Drive is made up of the following major components:
1.An efficient 30kW electric motor delivering 151 lb-ft of torque
2.A regenerative braking system
3.An integrated starter generator that enables the engine to turn off at stops and restart automatically under acceleration
4.A breakthrough lithium polymer battery package, with 5.3 Ah of capacity at 270 volts
5.A fuel-efficient Theta II 2.4-liter engine
6.6-speed automatic transmission with an improved efficiency electric oil pump
7.Weight-efficient architecture coupled with a low drag coefficient (.25 Cd target)
8.Electric air conditioning compressor
9.Hybrid power control unit
The high-tech, all-aluminum, 16-valve engine also features Continuously Variable Valve Timing (CVVT) on both camshafts and newly developed engine components to reduce friction. This optimized Theta II engine achieves 10 percent better fuel consumption over a conventional Theta II engine.
 |
| Photo: Hyundai |
Hyundai Hybrid Blue Drive uses the company's proprietary 6-speed automatic transmission rather than a conventional hybrid's CVT. Hyundai's strategy involves an adaptation of the modular 6-speed transmission, replacing the torque converter with an electric motor and high-efficiency oil pump. This technique uses a traditional step-shift 6-speed transmission rather than a CVT to provide a more traditional shift feel that is preferred by customers and sometimes artificially replicated in CVT applications. This saves on cost, making the Hyundai Hybrid Blue Drive system a better value. It is a more robust and elegantly simple solution to a complicated engineering challenge.
Fuel efficiency improvements are evident throughout Sonata Hybrid. For example, the top three gear ratios in the transmission have been extended to ensure the engine runs at lower RPMs, the electric motor-assisted steering system reduces demands on the engine, and low resistance tires further optimize fuel economy.
Hybrid Blue Drive is made up of the following major components:
1.An efficient 30kW electric motor delivering 151 lb-ft of torque
2.A regenerative braking system
3.An integrated starter generator that enables the engine to turn off at stops and restart automatically under acceleration
4.A breakthrough lithium polymer battery package, with 5.3 Ah of capacity at 270 volts
5.A fuel-efficient Theta II 2.4-liter engine
6.6-speed automatic transmission with an improved efficiency electric oil pump
7.Weight-efficient architecture coupled with a low drag coefficient (.25 Cd target)
8.Electric air conditioning compressor
9.Hybrid power control unit
Article Gallery