INNOVATION

ENERGY TCE 90

The Energy TCe 90 engine is the first three-cylinder turbo petrol engine developed by Renault. It boasts the best driving enjoyment/fuel economy equation on the market and its user cost is reduced. The Energy TCe 90 will be launched in the future Clio and will gradually replace the current TCe 100, without sacrificing driving pleasure despite its 25 per cent reduction in cubic capacity.

Renault's first three-cylinder turbo engine 

First three-cylinder engine by Renault, the Energy TCe 90 is the product of a brand-new Renault design. This 899cc turbo petrol engine is all-aluminium.

 

Featuring a very low inertia turbo (the lowest on the market) combined with Variable Valve Timing (VVT), the Energy TCe 90 boasts the best driving enjoyment/fuel economy equation on the market.

 

The new engine develops 90hp at 5,000rpm and torque of 135Nm available across a broad rev-band, guaranteeing all the driving enjoyment of a 1.4-litre naturally aspirated engine. With 90 per cent of torque available from 1,650rpm, it delivers smooth response from low engine speeds. Driving is smoother with less frequent gear-changes in built-up areas. Peak torque of the sprightly, free-revving Energy TCe 90 is 5,500rpm.

  

The Energy TCe 90 delivers the market’s fastest airflow ‘tumble’ effect inside the cylinders. Combustion is virtually instantaneous and takes full advantage of the downsizing to three cylinders:

 

  • downsizing is a technique which involves reducing the cubic capacity of an engine in order to reduce fuel consumption, while maintaining performance thanks to turbocharging. The resulting saving in fuel consumption is estimated to be five per cent ;
  • removing a cylinder reduces friction by 20 per cent compared with a four-cylinder engine architecture of the same cubic capacity, leading to a four per cent saving in fuel consumption ;
  • the three-cylinder pulse, combined with a longer exhaust phase, is twice as powerful as that of an equivalent four-cylinder engine. This natural turbocharging means that less demand is made of the turbo which is in turn more efficient, directly benefiting fuel consumption.

The Energy TCe 90 will be launched in the future Clio and will gradually replace the current TCe 100, without sacrificing driving pleasure despite its 25 per cent reduction in cubic capacity.


A turbo petrol engine, fuel economy champion... 

Renault’s engineers took full advantage of the new threecylinder engine architecture (see box below) to achieve an optimum air-fuel ratio on the Energy TCe 90 unit, even at peak power (from 2,000 to 4,000rpm), in order to bring down fuel consumption in all driving conditions.

 

The result is a 25 per cent reduction in NEDC combined cycle fuel consumption and CO2 emissions compared to the engine it replaces.

 

User cost is reduced : between -20% to -50%, depending on countries' tax incentives. With the Energy TCe 90 engine, the driver is spending less on petrol and pays less taxes linked to CO2 emissions (depending on countries) : -1l /100km, -30g of CO2/km * compared to the previous engine. In some cases, he will pay less taxes linked to the engine's cylinders (Germany, Portugal, Romania…)

 

 * : Homologated consumption and CO2 emissions.


...& proud member of the Energy family 

The Energy TCe 90 is the eighth engine of the Energy family, launched within the space of 16 months. As with all engines from the range, the Energy TCe 90 benefits from breakthrough technologies and an expertise derived from Formula 1.

 

Following the example set by Philippe Coblence, who worked on the Energy dCi 130, Jean-Philippe Mercier, another man from Viry-Châtillon (where Renault F1 powerplants are produced) was tasked with engineering the new three- and four-cylinder Energy TCe powerplants. The Energy TCe 90 benefited from his expertise in three key areas :

  • a comprehensive grasp of ‘square’ engine architectures;
  • reducing friction, thanks to materials with low friction coefficients which are used in F1, such as Diamond-Like Carbon (DLC) coated cam followers, graphitecoated piston skirts, and Physical Vapor Deposition (PVD) coating of the piston rings; 
  • guaranteed reliability: the Energy TCe boasts a specific power output of 100hp/litre – a first for an engine of this size.

 

Just like all other engines of the Energy range, the three-cylinder is packed with a raft of technologies: 

 

  • Stop & Start technology, combined with deceleration/braking energy recovery;
  • high tumble effect: optimised flow of the fuel mix inside the combustion chamber for fast, stable combustion;
  • thermal management technology, which speeds up the rate at which an engine reaches its ideal working temperature by 15 per cent on average;
  • oil pump and a Teflon®-coated timing chain, which help to reduce friction;
  • finally, the engine’s harmonics-rich signature pitch that recalls the sound made by six-cylinder powerplants.

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