Renault Type D engine

From 1996 on

The D Renault engine is a automotive internal combustion gasoline four-stroke engine, with 4 cylinders in line bored directly in the cast block, water-cooled, with a crankshaft 5 bearings, with shaft cam(s) driven head by a timing belt toothed, with a cylinder head in aluminum OHV , making its first appearance on the Twingo I and Clio I Phase 3 . 

The 1.0 and 1.2 engine is fitted to Renault and Dacia cars This engine is available in 8 and 16-valve versions.

History 

Manufactured by the French Society of Mechanical for Renault,the "D engine" was designed simply because  the Clio's " Energy Engine " 1.2 by design with its hemispherical cylinder head that places the exhaust at the front of the cylinder head could not fit under the hood from the little Twingo. At the launch of the Twingo in 1993, at Renault we did not believe too much in the success of this little car, at that time, the "engine Energy" had appeared recently, it was therefore unthinkable to design another engine of displacement and Equivalent power, the design of an engine generates several years of study and the costs are considerable. So to launch his Twingo in 1993, Renault brings out its legendary and proven "  Cléon-Fonte engine  " in an exclusive engine (1239  cm ³), which could be housed under the hood of the small Renault, equipping it with a single-point injection system. The "Cléon-Fonte engine" is of old design, since it has a camshaft (with rockers and rocker rods), this engine appeared in 1962 on Renault Florida S and Renault 8 .

For 1997, new pollution standards should be applied. Renault could have kept the 1.2 "Cléon-Fonte" on the Twingo and the 1.2 "Energy" on the Clio, by applying modifications on its engines, especially by equipping them each with multipoint injection, but rather than investing costs of studies on two different engines and the unexpected success of the Twingo, it was preferred to opt for a new engine that could be mounted on both the Twingo and the Clio, hence the birth of the "engine D ". This new type D7F  engine was produced at Douvrin by the Société Française de Mécanique .

The "D engine" is equipped as the "Energy engine" of a hemispherical cylinder head incorporating the camshaft, but the exhaust is placed at the rear of the cylinder head, to be able to get under the hood of the Twingo. Regarding the machining of cylinders, this engine no longer has removable folders as it was the case on engines "Cleon-Cast Iron" and "Energy". The direction of rotation of this motor is hourly (distribution side), as on its predecessors.

The D7F engine, (60 hp and 93 Nm), equipped from 1996, the Twingo I and Clio I phase 3. It will also be under the hood of the Express , Kangoo I , Clio II and Twingo II .

Evolution 

In December 2000, the "D engine"  with a 16-valve cylinder head, type D4F (75 hp and 105 Nm), fitted to the Twingo I, Twingo II, Wind , Clio II , Clio III , Clio IV , Kangoo I, Logan I , Logan II , Sandero I and Sandero II .

In June 2007, the "D engine" is grafted a turbo, equipped with a 16-valve cylinder head, type D4FT (100 hp and 145 Nm). This engine equipped Twingo II, Wind , Clio III and Modus under the trade name TCe 100 .

The "D engine" also exists in 1.0 with 8 valves (type D7D), and 1.0 with 16 valves (D4D), on export.A diesel variant was under study, it was a 1.2 dCi type D9F. The project was abandoned in favor of a deflated version of the 1.5 dCi (K9K) .