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A WIDE RANGE OF ADVANCED TECHNOLOGY POWERPLANTS

 

Right from launch, the C4 is available with a wide choice of new generation engines. It offers a choice of five petrol engines: the 1.4i 16V (90 bhp DIN), the 1.6i 16V (110 bhp DIN), the 2.0i 16V (138 bhp DIN), the new 2.0i 16V (143 bhp DIN) recently introduced on the C5 and available with the C4 Saloon, and the 2.0i 16V (180 bhp DIN), installed on a CitroŽn vehicle – the C4 Coupť – for the first time. The three HDi diesel engines available with the C4 are all equipped with second-generation common rail. The 1.6 HDi 92 bhp is making its debut on a PSA Peugeot CitroŽn Group vehicle, while the new HDi 110 and HDi 138 engines were recently introduced in the CitroŽn range. 

Most of these engines already satisfy the Euro IV emission standard. With the C4, CitroŽn is also expanding the range of vehicles equipped with the diesel particulate filter system (DPFS). This technology rounds out the benefits of HDi engines in the field of environmental protection.


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A WIDE RANGE OF ADVANCED TECHNOLOGY POWERPLANTS

 

The C4 is available with a diversified engine range from launch. The offering is organised around five petrol engines, including the new 143 bhp 2.0i recently introduced on the C5, and three HDi diesel engines developed through the cooperation project with Ford. They include the HDi 92 – fitted for the first time on a PSA Peugeot CitroŽn vehicle – and the new HDi 110 and HDi 138 recently introduced in the CitroŽn range.

 FIVE PETROL ENGINES FROM LAUNCH

Five petrol engines are available: the 1.4i 16V (90 bhp DIN), the 1.6i 16V (110 bhp DIN), the 2.0i 16V (138 bhp DIN), the new 2.0i 16V (143 bhp DIN) recently introduced on the C5 and available with the C4 Saloon, and the 2.0i 16V (180 bhp DIN), installed on a CitroŽn vehicle – the C4 Coupť – for the first time. All the engines feature a cylinder head with a double overhead camshaft, four valves per cylinder and a motor-driven throttle, controlled electrically by the engine control unit. All the engines are equipped with a five-speed manual gearbox, except for the 143 bhp 2.0i 16V engine, which is coupled with an automatic gearbox. The 110 bhp 1.6i 16V engine is also available with an automatic gearbox. 

The 1.4i 16V engine is the entry-level model. It develops 65 kW EEC (90 bhp DIN) at 5,250 rpm and maximum torque of 133 Nm at 3,250 rpm. It features continuously variable valve timing (VVT) to optimise filling of the combustion chambers at all engine speeds. Variable valve timing offers more torque at low engine speeds. Torque of 118 Nm – 90% of maximum torque – is available from 1,800 rpm, thus contributing to the respect of the Euro IV emission standard. The angular variation with respect to crankshaft timing is managed by the engine control unit, in line with the engine oil temperature, engine load and speed. 

This engine also features a stiffened cylinder block to meet high standards of acoustic comfort. Fuel consumption is low (6.4 l/100 km over a standard combined cycle), and emissions satisfy the future Euro IV standard. 

The 1.6i 16V engine develops 80 kW EEC (110 bhp DIN) at 5,800 rpm and maximum torque of 147 Nm at 4,000 rpm. Highly responsive from the lowest engine speeds, this engine offers torque of 132 Nm – 90% of the maximum amount – from 2,000 rpm. This mid-range engine strikes an excellent balance between performance and fuel consumption in combined use (7.1 l/100 km over a standard combined cycle). 

The 2.0i 16V engine develops 100 kW EEC (138 bhp DIN) at 6,000 rpm with torque of 190 Nm at 4,100 rpm. The high engine torque available from low engine speeds ensures a smooth response to driver input. This engine offers torque of 165 Nm from 2,000 rpm, almost 87% of the maximum torque available. 

The power of the engine combined with the strong, steady increase in engine speed make the C4 138 bhp 2.0i 16V a pleasant and relaxing drive, offering superior responsiveness and acoustics. 

The 2.0i 16V engine is also available with the C4 Saloon, in a version offering output of 103 kW EEC (143 bhp DIN) at 6,000 rpm. It is coupled with an automatic gearbox. Recently introduced on the C5, this new version of the 2.0i 16V engine offers maximum torque of 200 Nm at 4,000 rpm. It features continuously variable valve timing (VVT) to optimise filling of the combustion chambers at all engine speeds. This engine offers torque of 170 Nm from 2,000 rpm, almost 85% of the maximum torque available.

It also meets the requirements of the Euro IV emission standard. 

The 2.0i 16V engine, developing 130 kW EEC (180 bhp DIN) at 7,000 rpm is the most powerful engine in the range. The C4 Coupť is the first CitroŽn vehicle to offer this engine. This engine combines dynamic driving thrills with a high level of safety and daily comfort of use. Maximum torque is 202 Nm at 4,750 rpm. On this engine, the intake camshaft is also equipped with a continuously variable valve timing system. This characteristic makes for a powerful, responsive engine. 

 

THREE DIESEL ENGINES OFFERING EXCEPTIONAL PERFORMANCE AND FUEL CONSUMPTION

The C4’s three HDi engines are all equipped with second-generation common-rail. The 1.6 HDi 92 bhp is making its debut on a PSA Peugeot CitroŽn Group vehicle, while the new HDi 110 and HDi 138 engines were recently introduced in the CitroŽn range.

The characteristics and performance of these compact, low-weight engines are exceptional: driving pleasure, reduced fuel consumption and pollutant emissions are combined with acoustic comfort and vibration control. The engines are also remarkable for their verve, and for the temporary torque increase of 20 Nm made available by the overboost function, which is present on the two most powerful versions. 

The HDi 138 engine is coupled with the six-speed manual gearbox, recently introduced on the C5. 

The new 1.6 HDi 16V engine develops 66 kW EEC (92 bhp DIN) at 4,000 rpm and torque of 215 Nm at 1,750 rpm. Based on the HDi 110, this “allaluminium” engine is making its debut in the CitroŽn range. With low fuel consumption (4.7 l/100 km over a standard combined cycle) and CO2 emissions of just 125 g/km, this engine satisfies the Euro IV standard. 

The 1.6 HDi engine is also available in a version offering output of 80 kW EEC (110 bhp DIN) at 4,000 rpm, introduced on the Xsara Picasso in February 2004. It supplies maximum torque of 240 Nm at 1,750 rpm. Torque can be increased to 260 Nm at 1,750 rpm on the three highest gears, thanks to the overboost function. 

For strong bursts of acceleration, the overboost function kicks in, delivering up to 20 Nm of additional torque by increasing the fuel injection rate. This new engine therefore combines a fast response with a linear increase in power, and excellent acceleration at low engine speeds. 

The HDi 110 features a second-generation injection system delivering injection pressure of 1,650 bars, controlled by piezoelectric-type injectors. A variable-geometry turbocharger enhances driving pleasure and performance. This engine makes full use of the potential offered by the common-rail system with its multiple injection technology and the enhanced management of fuel injection into each cylinder, providing four injections per engine cycle:

• two pilot injections to reduce combustion noise,

• two main injections to reduce nitrogen oxide emissions at source.

When it is equipped with the particulate filter, two additional postinjections improve the regeneration efficiency.

As a result of its low fuel consumption – 4.7 l/100 km over a standard combined cycle – and its 60-litre tank, this engine offers a range of more than 1,200 km. CO2 emissions are also very low, at 125 g/km. 

The Euro IV version, available in some countries from the launch of the C4, is equipped with the diesel particulate filter system (DPFS), which traps and destroys particulates. 

The 2.0 HDi engine complies with the Euro IV standard and is coupled with the diesel particulate filter system (DPFS). It develops 100 kW EEC (138 bhp DIN) at 4,000 rpm. Offering maximum torque of 320 Nm at 2,000 rpm, it also features an overboost function that raises torque temporarily to 340 Nm. This new engine is coupled with a six-speed manual gearbox already available with the C5. The HDi 138, like the HDi 110, features a second-generation injection system and a variable-geometry turbocharger.