Diesel engine versions of Honda's UK-built Civic three and five door hatchback models will make their world debut at the Frankfurt Motor Show next month.

The Isuzu-sourced 1.7-litre turbodiesel has common rail direct injection and variable nozzle turbocharger and accelerates the three-door version from 0 to 100km/h (62 mph) in 11.2 seconds. EC combined cycle fuel consumption is 57.7 mpg.

Power output is 100 PS at 4400 rpm and peak torque of 220 Nm is delivered at 1800 rpm. The DOHC, four-valves-per-cylinder engine features a number of items unique to Honda including the fuel filter and accelerator position sensor.


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Additional NVH measures for the diesel include an engine undercover, thicker urethane foam insulation in the front bulkhead area, thicker floor mat insulators and noise-absorbing felt backing on the fascia.

The engine itself features a high-performance acoustic cover, a dual damper-type crank pulley and a higher inertia flywheel.

The diesel Civics, badged 1.7 CTDi, share liquid filled mounts attached to either side of the sub-frame with their petrol siblings - one for the transmission, the other for the engine. These minimise the transfer of engine vibration, particularly at idle.

Honda says that the compact dimensions of the Isuzu engine were a significant factor in its selection for the Civic because it fits in the confines of the model's 'short nose' design.

The Isuzu diesel is matched to a unique five-speed manual transmission with ratios optimised to the engine's characteristics. A triple cone synchroniser between first and second gears ensures smooth shifting.

High strength, shot-peened gears are used, and despite the need to cope with high levels of torque, the gearbox is compact; at 359.5 mm, it is just 7.5 mm longer than the manual transmission of the 1.4 and 1.6 litre petrol engine cars.

Diesel vehicles accounted for one third of Western Europe's C-segment three door hatchback sales during 2000, compared with a fifth in 1997.

To view related research reports, please follow the links below:-

Diesel Engines & Parts to 2003

Automotive regional report: Western Europe

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