 TOP SPEED 180 km/h
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C3 Stop and Start and SensoDriveAt the 2004 Paris Motor Show, Citroën is unveiling the C3 Stop and Start: the first mass-market vehicle to feature the innovative Stop and Start technology.
Based on the Pack Clim finish, the C3 Stop and Start offers extra features such as air conditioning with automatic temperature control, a refrigerated glovebox, an automatic front windscreen wiper, automatic headlamps and cruise control. Real advantages with immediate benefits for passengers A more relaxed and enjoyable drive With its exceptional - and immediately perceptible - benefits, the C3 Stop and Start is a more relaxed and undemanding car to drive, particularly when the engine is in standby. • hearing comfort for passengers, and respect for other people; • hearing comfort also, with the instant engine start-up, which is silent and transparent to the occupants; • physical comfort, owing to the absence of engine vibration. This relaxed approach does not detract from driving pleasure. Quite the contrary. Stop and Start uses a discreet easy-to-learn technique that requires no change in driving style and that actually enhances driving pleasure. Lower fuel consumption and CO2 emissions Reflecting Citroën's active environmental policy, the advantages of the C3 Stop and Start also include lower fuel consumption and reduced CO2 emissions. Stopping and starting the engine repeatedly no longer causes excess fuel consumption. The reversible alternator and electronic fuel injection bring fuel savings of around 10%, or 18 g of CO2/km, in the city. Over a standard combined cycle, savings are close to 6%. Using this technology, alongside the SensoDrive gearbox and the 1.4i 16V engine, the C3 Stop and Start offers consumption of 5.7l/100 km over a standard combined cycle. When traffic is heavy, fuel savings can rise to 17%. Affordable technology Sold at an affordable price, the Stop and Start system reflects Citroën's policy of making new technologies - such as the SensoDrive gearbox - widely available. Simple and reliable technology managed electronically Simple operation
• engine temperature too low; • battery charge level too low; • in extreme outside temperatures (below -10°C, above +30°C), when the air conditioning is on; • when the difference between the requested temperature and the ambient temperature is too great; • activation of windscreen demisting / defrosting; • activation of reverse gear. The "Stop & Start" system is reactivated automatically whenever the car is started. Reliable architecture The system comprises two key components: • a 2 kW reversible alternator performing the functions of both starter and alternator (supplying electricity to the onboard network), replacing the conventional alternator. The main advantages of using an alternator for start-up are silence and speed (400 ms compared with 800 ms for a conventional starter) ; • an electronic unit, which manages the alternator and provides a link with the engine control unit and built-in systems interface. The system is completed by a battery, a special belt and a belt tensioner. C3 1.4i 16V SensoDrive Stop and Start: associated benefits Equipped with the 1.4i 16V engine launched in December 2003 and the SensoDrive automated gearbox, the C3 Stop and Start uses mechanical parts of advanced design in order to combine the gains offered by each component in terms of reduced fuel consumption and lower CO2 emissions. The 1.4i 16V engine develops 65 kW EEC (90 bhp DIN) at 5,250 rpm and maximum torque of 133 Nm at 3,250 rpm. To meet performance and consumption objectives, and to comply with the future Euro IV emission standard, the engine features continuously variable valve timing, a 16-valve cylinder head, and hydraulic roller cam followers for valve control. The C3 reports buoyant performance Launched in March 2002, the C3 continues to enjoy considerable commercial success on a market segment that accounts for almost 35% of sales in Europe. With more than 600,000 vehicles sold since launch, of which 340,000 in 2003 and already 190,000 in first-half 2004, Citroën has gradually increased its share of the European supermini segment from 9.2% in first-half 2004. Continuous upgrading is the rule for the C3 range. Today, the C3 is innovating with ecological and economical technology that brings enhanced comfort and well-being for all passengers. Key dates - C3 range C3 March 2002 C3 HDi 92 June 2002 C3 1.6i 16V SensoDrive July 2002 C3 Pluriel May 2003 C3 HDi 70 SensoDrive - 1.4i 16V SensoDrive December 2003 C3 X-TR March 2004 C3 Pluriel HDi 70 April 2004
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This C3 model combines two advanced technologies:
the SensoDrive automated gearbox and an electronically controlled reversible
alternator. In this way, the C3 Stop & Start contributes to quality of
life in the city by reducing fuel consumption and CO2 emissions
by around 10% over an urban cycle. At the same time, it cuts noise emissions,
since the engine cuts out whenever the vehicle stops. With the C3 Stop and
Start, the engine stops just before the vehicle comes to a standstill (traffic
lights, traffic jams, etc.). It starts again automatically and instantaneously
as soon as the driver takes his foot off the brake pedal to move forward
again. Available with the 90 bhp 1.4i 16V engine and the SensoDrive automated
gearbox, the C3 Stop and Start contributes to the vitality of the C3 range.
Working together, these two complementary technologies offer a perfect fit
with the Marque's strategy in terms of innovation and environmental protection.
The development of the SensoDrive gearbox on
the C2, C3 and C3 Pluriel is part of this strategy. Citroën offers the
widest range of vehicles with an automated manual gearbox currently on the
market. With its electronic clutch and gearchange control, the SensoDrive
consumes less fuel than a conventional manual or automatic gearbox. Fuel
consumption and CO2 emissions are around 8% lower over an urban
cycle and 4% lower over a combined cycle. The SensoDrive also offers new
driving sensations, with a choice of gearchange modes (steering-wheel paddles,
sequential gearlever or fully automatic), and no clutch pedal. The C3 Stop
and Start marks a new step forward for Citroën in acoustic comfort and
vibration control, economy and environmental protection. With the Stop and
Start system, fuel consumption and CO2 emissions are around 10%
lower over an urban cycle and 6% lower over a combined cycle. On the outside,
the C3 Stop and Start features colour-keyed front/rear bumpers and side
mouldings, aluminium-grey door handles and registration plate trim, and 15-inch
wheels combined with a special wheel embellisher and a "Stop and Start" badge.
On the inside, the mixed fabric/velour, blue seats, front elbow rests, leather
steering wheel and sill trim underline the modern and elegant design of the
passenger compartment.
When the driver applies the brakes to stop
the car, the engine cuts out just before the car comes to a complete standstill
(speed of less than 6 km/h). A green "eco" indicator lights up on the instrument
cluster. The clutch is open. The engine remains in standby for as long as
the driver keeps a foot on the brake pedal, even if the pressure is slight.
When the driver releases the brake pedal, the engine starts up again
automatically and instantaneously. The green "eco" indicator is switched
off. When the driver presses the accelerator pedal down, the clutch gradually
closes (SensoDrive gearbox). The driver can deactivate the "Stop and Start"
system at any time, using the "eco off" button on the central fascia. In
this case, the car will function in the same way as a conventional SensoDrive
vehicle. Pressing the button again will reactivate the function. To activate
or maintain engine stand-by, the system uses the electronic control unit
to check a number of parameters. The "Stop & Start" system cannot function
in the following cases:
