Renault D-Type engine

From Wikipedia, the free encyclopedia

Also calledDiET engine
Production1996–present
Renault D-type engine
Renault D7F in a 1997 Renault Twingo
Overview
ManufacturerRenault
Also calledDiET engine
Production1996–present
Layout
ConfigurationI4
Displacement1.0 L (999 cc)
1.1 L (1,149 cc)
ValvetrainSOHC 2 or 4 valves x cyl.
Combustion
TurbochargerOn D4FT
Fuel systemSequential MPFI
Fuel typePetrol
Cooling systemWater-cooled
Output
Power output60–107 PS (44–79 kW; 59–106 hp)
Torque output93–145 N⋅m (69–107 lb⋅ft)
Chronology
PredecessorEnergy engine

The Renault DiET engine also known as "D engine" or "D-Type" is a straight-4 automobile petrol engine from Renault designed to replace the existing Cléon-Fonte engine in the Renault Twingo.

The D Engine was designed because the 1.2-liter Energy Engine with its hemispherical cylinder head and exhaust up to the front of the head could not fit under the hood of the First generation Twingo.

In 1997, new European pollution regulations went into effect. Renault could have kept the Cléon-Fonte 1.2 on the Twingo and its Energy engine 1.2 on the Clio, by equipping them with multipoint injection and other technological improvement, but rather than investing in updating two different engines and because of the unexpected success of Twingo, they decided to opt for a new engine that could be mounted in the Twingo as well as the Clio – hence the creation of the D-Type Engine.

The D-Type engine has a hemispherical cylinder head incorporating the camshaft, with the exhaust placed at the back of the head in order to get under the hood of the First generation Twingo.

D7F

First produced in July 1996, the D7F displaced nominal 1.1 L; 70.1 in3 (1,149 cc) and produced 60 PS (44 kW; 59 hp) at 5250 rpm and 93 N⋅m (69 lb⋅ft) at 2500 rpm. It had sequential multi-port fuel injection.

Applications:

D7D

The D7D was a 1.0 L (999 cc; 61.0 cu in) 8-valve version.

Applications:

D4F

The D7F was succeeded by the D4F in December 2000.[1] It was the same displacement but added 16-valve SOHC heads for 75 PS (55 kW; 74 hp) at 5500 rpm and 105 N⋅m (77 lb⋅ft) at 3500 rpm (D4F-702, D4F-712). It was revised in 2004 (D4F-722) to receive better intake design with much larger air filter extending torque range from 3500rpm to 4250 rpm. D4F-740 variant received changes to camshaft and valve lifters to allow lower idle at 650 rpm and shorter 1st and 2nd gear to help with extra weight of new Clio III introduced in 2005.

Applications:

D4D

D4FT

References

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