Alfa Romeo 4C 2013 User Manual

Service News

Alfa 4C

Version: all models

0000 0 000 AA NEW 4C MODEL

Main features and technical specifications – Network Information

The new Alfa Romeo compact 2-seater coupé, with rear drive and central engine, is called 4C. The new model is shown in Fig. 1 and is featured by:

 4-cylinder, 1750 Turbo Petrol aluminium engine.  Alfa Twin Clutch Transmission (TCT).  New Alfa DNA selector with Race mode.  Structural and bearing carbon chassis.  Weight/power ratio: lower than 4 kg/HP.

Fig. 1 - Alfa 4C

02.13

The identification data, dimensions, main technical specifications and a short description of the main innovative/important features of the new model can be found in the following pages.

IDENTIFICATION DATA

Engine codes and bodywork versions

1750 Turbo Petrol

VERSION

960A1000

ENGINE

960CXB1A 01

BODYWORK

DIMENSIONS

Fig. 2 - Vehicle dimensions in mm (unladen and with standard tyres)

Electronically controlled phased sequential multipoint electronic injection with turbo and

1639

1868

1606

2090

3990

(*) Height is measured with vehicle unladen. Small variations in size are possible depending on the dimensions of the rims Luggage compartment volume: 110 dm³ (V.D.A. standards)

864

2380

746

1184 *

ENGINE

The Alfa 4C engine is 1750 Turbo petrol Euro 6 type, in a central transversal position. This engine represents an evolution of the power unit mounted on Giulietta Quadrifoglio Verde version; it has an innovative aluminium block and special intake and exhaust systems, optimised to further enhance the vehicle sports "soul". The main specifications are listed hereby:

1750 Turbo Petrol (240 HP)

Engine marking

Total displacement

EC max. power

At a speed of

EC max. torque

At a speed of

Timing system

Fuel supply

Max. speed

Acceleration 0÷100 km/h

(*) Values obtained using 98 RON unleaded petrol.

960A1000

1742 cm³

177 kW – 240 HP (*)

6000 rpm

350 Nm (35.7 kgm) (*)

2100 ÷ 4000 rpm

DOHC

intercooler

258 km/h

4.5 seconds

ENGINE DESCRIPTION

The 1750 Turbo Petrol 240 HP engine, shown in Fig. 3, is an overhead 4-cylinder on line type, with petrol fuel supply, timing through double stage continuous variation, direct injection and supercharged. Fig. 3 - 1750 Turbo Petrol engine

The main features of the new 240 HP engine are:

 four cylinder in-line arrangement;  dual overhead camshaft with 16-valve timing system;  petrol direct injection fuel system;  dual continuous variable valve timing system (intake and exhaust side);  aluminium block;  cylinder head, oil sump and timing cover in aluminium alloy;  cylinder liners embedded in the block;  hydraulic tappets;  water pump inside the head;  oil filter built into the engine block;  timing with belt control and roller rockers (Roller Finger);  electronic accelerator and motorised throttle body;  ignition system with 4 coils on top (with coils on top of spark plugs)  two oxygen sensors;  use of a fixed geometry turbocharger coupled to an innovative Pulse Converter exhaust manifold (which optimises exhaust pressure pulses to increase torque at low engine

speed; in practice, it increases exhaust gas speed between valves and turbine).

 Both the manifold and the turbine are made of microcast steel to withstand very high operating temperatures and therefore reduce consumption on motorways at medium-

to-high speed.

Alfa DNA SYSTEM (Car dynamic control system)

Alfa 4C comes with the control system for the car dynamic (DNA) installed on Giulietta and MiTo, too; unlike these vehicles, it has a new configuration: Race along with Dynamic, Natural and All Weather modes. Through the selector (A - Fig. 4) located on the centre tunnel, the customer can select four different types of response of the car, depending on the driving requirements and road conditions: The selector is monostable type. In other words, it always remains in a central position (Natural). When is shifted forwards (towards Dynamic) or backwards (towards All Weather), once it is released, it goes back to the stable position. The engaged driving mode is shown by the switching-on of the corresponding LED on the trim (d, n, a - Fig. 4) and the corresponding switching-on of the corresponding wording "dna" on the instrument panel, as shown in Fig. 5 and 8.

Fig. 4 - DNA selector

A - Selector lever d - Dynamic or Race: mode for sports driving. n - Natural: mode for driving in normal conditions.

a - All Weather: driving mode for poor grip conditions (such as rain, snow, etc.).

The DNA selector is electrically connected to the Body Computer which notifies the nodes/control units (engine control module, instrument panel, VDC/ASR) involved of the configuration selected. According to the configuration selected by the user, each control unit involved is self-configured to use the maps and its operating strategies. Here below are listed, for each mode, the engagement reporting and the configurations used by the control units/nodes.

Natural mode

the LED next to the letter "n" on the selector (Fig. 4) switches on and the "n" in the instrument panel comes on (Fig. 5).

 ESC/ASR: intervention thresholds aimed at providing comfort and safety in normal grip and driving conditions.  Electronic Q2: the system is calibrated to ensure the best driving comfort.  Engine: standard response.  Transmission: standard response both in manual and automatic mode.

Fig. 5 - Natural mode

Dynamic Mode



Engagement: move and briefly press (about one second) the lever from the Natural to Dynamic mode. The Dynamic configuration will be set when the LED lights up next to letter "d" on the selector (Fig. 4) and the letter "d" (Fig. 6) lights up in red on the instrument panel.

 ESC/ASR: intervention thresholds aiming at a sports driving, ensuring car stability; RAB function activated (RAB - Ready Alert Brakes - pre-approaching of brake pads).  Electronic Q2: the system is calibrated to increase traction whilst accelerating on bends, improving the agility of the car.  Engine: faster response of the torque with the same position of the accelerator.  Transmission: it can be set in sports mode, reducing the gearshifting time both in manual and automatic mode.

Fig. 6 - Dynamic mode

All Weather Mode

Engagement: move and briefly press for a few seconds the lever from the Natural to Dynamic mode. The All Weather configuration will be set when the LED lights up next



to letter "a" on the selector (Fig. 4) and the letter "a" (Fig. 7) lights up in blue on the instrument panel.

 ESC/ASR: intervention thresholds aimed at ensuring maximum safety in low-grip driving conditions.

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