All New Ignis | Part Five

Ignis 3-Door

 

All-new 1.3-litre 16 valve engine

For performance befitting a standard-setting compact car, Ignis has an all new 1.3-litre, DOHC, naturally aspirated, all-aluminium engine that combines superior driveability with low noise, high fuel efficiency and minimal exhaust emissions.

The DOHC 1328cc engine has 16 valves and electronically controlled multipoint fuel injection. It is mated to a five-speed manual transmission or to a four-speed automatic transmission which is available as an option. Maximum output is 83ps at 5,500 rpm and maximum torque of 110 Nm is generated at 3,500 rpm. Fuel consumption for the manual [93/116/EC Combined] is 44.1 mpg [6.4 litres/100km].

A number of other aspects of the design of the engine further help improve quietness and performance. The timing chain - the first in any car engine to have a pitch of 8mm. - has V-shaped teeth that mesh more smoothly with the sprockets than conventional roller-chain teeth.

The crankshaft has rigidity-enhancing semi-ladder-frame bearings to reduce vibration. Each bearing is made of a rigid iron-based sintered alloy and is held in position by four bolts rather than the usual two. The intake system incorporates both high frequency and low frequency resonators to reduce peak noise levels during air intake.

The cylinder head cover is isolated from cylinder head vibration by a rubber gasket and by metal-and-runner washers and the engine is mounted to the body at three points without a subframe. One of these points employs a liquid-filled mounting that minimizes transmission of engine vibration to the body.

For minimal exhaust emissions an oxygen sensor enables precise adjustment of the engine's air/fuel ratio. For rapid catalytic converter effectiveness after engine startup the catalytic converter is close to the engine and the oxygen sensor has a high-power heater. These features minimise nitrogen oxides [NOX], hydrocarbons [HC] and carbon monoxide [CO2].

Additional new technologies used in this advanced engine are semi-wet cylinder liners for more effective cooling [increasing efficiency and reliability], a new machining method for cylinder bores that provides near-perfect roundness, maximal inertia ramcharging for flat torque characteristics over the entire speed range, and a PCV [positive crankshaft ventilation] system that introduces fresh air in the crankcase to expel blowby gases and thus make engine oil last longer.

Chassis and suspension

The suspension for Ignis has been designed to provide superior levels of comfort for all occupants. With traditional MacPherson struts at the front and Suzukiís innovative Isolated Trailing Link [ITL] system at the rear Ignis strikes the perfect balance between refinement and agility.

Electric power steering is fitted as standard across the range and makes the car easy to manoeuvre in tight spaces. A turning circle of just over 32 ft [9.8 metres] and a natural well-weighted feel at speed are other welcome features.

All models feature 14 inch road wheels fitted with tyres developed specifically for the Ignis. These have been designed to offer optimum ride comfort with no deterioration in steering feel or cornering ability. Full size wheel covers are fitted to the three-door GL model, while set of attractive five spoke alloy wheels are included as standard on the five-door GL model, further enhancing the carís sporty good looks.

The braking system fitted to the new Ignis is one of the most effective in the class. The decision to equip the car with large 14 inch roadwheels has allowed the introduction of bigger 10.1 ins [257mm] ventilated disc brakes at the front along with traditional drums at the rear.

continues... | Part Six
Published 6 August 2003 Melanie Carter

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