Peugeot Shows Two HYbrid4 Concepts, New BB1 EV Concept at Frankfurt
15 September 2009
|The 3008 HYbrid4 concept previews the production model that will appear in spring 2011. Click to enlarge.|
Peugeot used the Frankfurt Motor Show as the platform to show two concept versions of its HYbrid4 platform. The 3008 HYbrid4 (earlier post) previews the production model scheduled to appear in the spring of 2011, while the experimental RCZ HYbrid4 is a sports car application of the same hybrid system.
In addition, Peugeot introduced the BB1 electric concept car. The company also recently signed an agreement with Mitsubishi for the introduction of the electric iOn—based on the Mitsubishi i-MiEV—at the end of 2010. (Earlier post.)
|HYbrid4 components. Click to enlarge.|
Peugeot’s HYbrid4 technology uses a parallel architecture combining a diesel engine, electric motor, 6-speed electronically controlled manual gearbox (MCP) and a stop-start system. The HYbrid4 system will be deployed into the production vehicle range beginning in 2011, with the 3008 HYbrid4.
The HYbrid4 is a “through-the-road” hybrid system. The engine in the HYbrid4 system is in the front of the vehicle, while the power electronics and electric machine are at the rear, enabling four-wheel drive: the engine drives the front wheels, while the electric motor, placed within the rear suspension linkage, drives the rear wheels. Everything is managed electronically—there is no mechanical connection between the front and the rear.
The 2.0 HDi FAP 120 kW (163 bhp) internal combustion engine, with a displacement of 1,997 cm3, was introduced this year and complies with the Euro 5 standard. It develops its maximum power of 120 kW at 3750 rpm, and maximum torque of 300 N·m (221 lb-ft) at 1580 rpm.
It features a new generation ECCS (Extreme Conventional Combustion System) combustion chamber; a variable-geometry low-inertia turbocharger; and a high-pressure pump with a maximum pressure of 2000 bar combined with a common rail and solenoid injectors with 8 apertures.
The gearbox is a 6-speed electronically controlled sequential manual gearbox. In automatic mode, its electronic management permits a significant reduction in fuel consumption compared to a conventional manual gearbox. It offers the option of being able to choose the gear change mode, manual or automatic, at any time, using the gear lever or the controls located behind the steering wheel.
The stop & start system places the internal combustion engine on standby when the vehicle is stationary or when the vehicle is being driven in electric only mode. The result is a significant reduction in fuel consumption and emissions, particularly in urban driving. With a power output of 8 kW, the “high voltage” stop & start system can provide the electric power necessary for operation of the rear electric motor if required (4-wheel drive mode).
The rear module, which can be fitted to several platforms, consists of a multi-arm rear suspension linkage at the heart of which is the electric motor and its drivetrain, provided by the GKN Driveline drive unit. The electric drive axle incorporates GKN Driveline’s proprietary disconnect clutch technology which facilitates on-demand all wheel-drive (AWD) use and contributes to the overall all-terrain functionality and fuel efficiency of the new system.
The HYbrid4 system is fitted with an synchronous permanent magnet electric motor. It continuously develops 20 kW (27 bhp) of power and temporary maximum power of 27 kW (37 bhp). It continuously generates a torque of 100 N·m (74 lb-ft), with a maximum of 200 N·m (148 lb-ft).
The PTMU (Power Train Management Unit) is an electronic control unit which automatically manages the different operating modes of the internal combustion engine and electric motor, in a way which is completely transparent to the user, biased towards low fuel consumption.
The power electronics act as an inverter and converter. The inverter acts on the torque of the electric motor by regulating the current from the high voltage battery pack. This operates over a voltage range of between 150 and 270 volts. The converter converts the 200V from the battery pack to 12V to supply the on-board vehicle systems. Applied on the HYbrid4, these components are extremely compact for optimum integration in the vehicle.
The 200V, 5.5 Ah NiMH (Nickel Metal Hydride) battery pack is located under the rear load area floor, near the electric motor. This high voltage battery pack is in addition to the conventional 12V battery, located under the hood, which continues to carry out its usual functions. In the medium term, said Peugeot, NiMH remains the most suitable technology, in terms of cost and manufacture, for vehicles produced in significant volumes.
PSA Peugeot Citroën Group collaborated with Bosch on the electric motor, the power electronics, the high voltage alternator and other systems managing the dialogue between these components and the braking and trajectory control systems (ABS and ESP). Sanyo provided its expertise on the NiMH high voltage batteries.
3008 HYbrid4. This first series production application of HYbrid4 technology is targeting a combined fuel consumption objective set at 3.8 liters/100 km (62 mpg US) or 99 g/km of CO2.
Total powertrain output (engine and motor) is a maximum 147 kW (200 bhp), with a maximum torque of 300 N·m (221 lb-ft) at the front and 200 N·m (148 lb-ft) at the rear.
Acceleration from 0 to 100 km/h takes 8.8 seconds, and top speed is 209 km/h (130 mph).
|The RCZ HYbrid4 concept. Click to enlarge.|
RCZ HYbrid4 concept. This 2+2 coupé is based on the same power train as the 3008 HYbrid4, reflecting Peugeot’s desire to offer this technology in different vehicles across its range.
Applied in the RCZ concept, the HYbrid4 system delivers level of fuel consumption of 3.7 liters/100 km (64 mpg US) and 95 g/km of CO2.
Acceleration from 0 to 100 km/h takes 8.5 seconds, and top speed is 215 km/h (134 mph).
|The BB1. Click to enlarge.|
The BB1 concept is capable of seating four people in a vehicle just 2.5 meters long. Access to the vehicle is through an inverted door opening mechanism, while trunk access is through a tail board and a tailgate. The interior can be transformed as required to offer a load volume of 160 liters (with four occupants), rising to 855 litres (with just one person in the car).
The BB1 is fitted with electric motors in the rear wheels, designed in association with Michelin. This original set-up maximizes the interior space. It draws its inspiration from the world of the quad bike, with a maximum power output of 15 kW (20 hp)—7.5 kW per motor. Maximum torque on each wheel is 320 N·m (236 lb-ft).
It accelerates from 0 to 30 km/h (19 mph) in 2.8 seconds and takes 4 seconds to move from 30 to 60 km/h (37 mph). Dual lithium-ion battery packs provide a range of 120 km (75 miles).
Each of the two battery packs supplying energy to the two respective electric motors are fitted under the right and left rear seats, thereby avoiding any reduction in the interior space and the storage space. Furthermore, this location between the two front and rear wheels helps with the centring of the vehicle weight and benefits vehicle stability, especially during braking.
Solar panels on the roof keep passenger compartment ventilation system operating in daylight, even when the vehicle is stopped. This enables two functions: pre-ventilation of the interior and the trapping of pollutants and ultra-fine dust particles (µm) through the use of high-performance filters and activated carbon.
The BB1 is based on a tubular chassis designed by Peugeot Motorcycles. The body is made up of a very light carbon structure, designed to wrap around the passenger compartment. Vehicle weight does not exceed 600 kg (1,322 lbs), including the batteries.
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