Renault - New technologies for conventional engines and transmissions

Renault - New technologies for conventional engines and transmissions

18.02.2009: In its bid to achieve significant reductions in CO2 emissions, Renault is working concurrently on: - Fundamental vehicle design parameters: mass, aerodynamics (CdA), rolling resistance,

In its bid to achieve significant reductions in CO2 emissions, Renault is working concurrently on:

 - Fundamental vehicle design parameters: mass, aerodynamics (CdA), rolling resistance,

- Efficient management of electrical energy (battery recharging under braking and when decelerating) and thermal energy (to speed up the climb in engine temperature),

- Transverse technologies, including 'stop & start' which automatically cuts the engine when the vehicle is at a standstill,

- Widespread downsizing of internal combustion engines (smaller turbocharged engines are more efficient). This work covers both petrol and diesel powerplants, although the greatest scope for reducing CO2 emissions concerns petrol engines.

- More efficient manual and automatic transmissions.

The latter two points in greater detail…
The future 'modular' TCe engine range
Renault is speeding up its work on downsized petrol engines

The challenge faced by petrol engines is to deliver significantly enhanced energetic efficiency, in particular when motoring in built-up areas. Downsizing and turbocharging are two very effective solutions, as illustrated by the TCe 100 which was launched two years ago and which has emerged as a pioneer in its class (1.2 litres). Powered by this engine, Renault Clio boasts the lowest CO2 emissions of its class (i.e. 100hp petrol engines), namely 137g/km, equivalent to combined cycle fuel consumption of 5.8 litres/100km.

To maintain the competitive edge its petrol engine range enjoys, and to achieve further significant reductions in CO2 emissions, Renault is developing a family of 'modular' TCe engines.

The future 'modular' TCe family (90 to 115hp)

With the imminent switch to Euro 5 and Euro 6 legislation, petrol engines are expected to become an increasingly attractive proposition, a trend anticipated by the new family of three- and fourcylinder TCe engines. Based on a range of cubic capacities extending from 0.9 to 1.2 litres, they will replace the current normally-aspirated engines in the 1.2- to 1.6-litre bracket. These new engines, which will feature a low inertia turbocharger, will focus on power outputs of between 65 and 85kW (90 and 115hp).

Renault will go on to develop more powerful versions. The basic design of these engines will permit the use of direct fuel injection and will enable even higher specific power outputs. CO2 emissions will be cut by between 30 and 40g/km compared with the engines they replace, and certain vehicles will be able to claim CO2 emissions of less than 100g/km.

The first of these engines will be launched within the next two-and-a-half years, and Renault estimates that these powerplants will go on to account for some 85 per cent of the petrol engines it markets in Europe.

This family of modular engines is being developed within the framework of the Renault-Nissan Alliance, an approach which permits capital outlay to be shared and economies of scale to be achieved, while also allowing the development of powertrains that meet the specific needs of different regions. Renault are bringing its understanding of the European market and experience of turbocharging to the table.

The future dCi range: an all-new engine The advantages of dCi engines

Turbocharged four-stroke diesel engines equipped with common rail direct fuel injection currently stand out as the most energy-efficient solution for use in passenger cars. On average, diesel engines consume between 20 and 30 per cent less fuel than a petrol engine of an equivalent level of performance.

The range of dCi engines currently boasts first class results with regard to CO2 emissions. For example:

- Renault Twingo dCi 85 claims 104g of CO2/km (equivalent to combined cycle fuel consumption of 4.0 litres/100km).
- - New Renault Mégane Hatchback emits 118g of CO2/km (equivalent to combined cycle fuel consumption of 4.5 litres/100km).
- - Laguna dCi 110: 130g of CO2/km (combined cycle fuel consumption of 4.9 litres/100km).

Renault's engineers intend to maximize the benefits of dCi technology thanks to evolutions aimed at enabling them to comply with upcoming emissions standards and making them even more fuel efficient. Numerous vehicles powered by these new-generation dCi engines will be able to claim CO2 emissions of less than 100g/km.

New generation 1.5 dCi engines

The 1.5 dCi (Type K9K) has a special place within the diesel range, since it is the most commonly sold Renault engine, with sales in 2008 of almost 900,000 units manufactured at Valladolid (Spain) and Bursa (Turkey). Available in several versions delivering different power outputs which currently extend from 65 to 110hp, the 1.5 dCi equips several Renault models (from Twingo to Laguna) and Dacia models. Its simple design and low friction make it a particularly attractive engine in terms of the performance it delivers for its price.

Renault plans to develop in-depth modifications to this 1.5-litre, four-cylinder powerplant which is expected to emit approximately 20g/km less CO2 when introduced from 2012.

The future 1.6 dCi 130 engine

This all-new 1.6 litre engine will boast peak power of 96kW (130hp) from launch. This represents a 16 per cent reduction in cubic capacity compared with a current 1.9 litre diesel engine of the same power output. Renault will go on to develop more powerful versions. CO2 emissions will be reduced by 25g/km compared with an equivalent engine, independent of improvements made to the vehicles it equips in fields such as aerodynamic performance, rolling resistance, mass, etc.

It will be Euro 6-ready and is covered by 15 Renault patents. This engine will form the core of the brand's Csegment line-up and will also play key roles in its D-segment and van ranges. Its launch is scheduled for 2011. This project, codenamed R9M, is a Renault-Nissan Alliance joint development. 2.0 dCi engines and beyond

The new-generation 2.0 dCi engine (Type M9R) is due to be released in 2012. In the meantime, Renault will carry over its downsizing policy to cover utility vehicles with the replacement of its current 2.5-litre engines by a 2.3 dCi unit featuring the same genetic make-up as the 2.0 dCi.

The V6 dCi (Type V9X) will continue to equip the group's upper-range models.

Automatic transmissions  - Twin-clutch transmission

Conventional automatic transmissions tend to place the emphasis on gearshift quality rather than fuel consumption. The development of new automatic transmissions sees Renault pursue two objectives:

- Improved mechanical efficiency compared to that of a conventional automatic transmission (with hydraulic coupling) thanks to technologies carried over from manual gearboxes.

- profit from the ability of automatic transmissions to permit an engine to run at the most energy-efficient revs with a view to obtaining fuel consumption performance on a par with that of manual gearboxes.

Renault is poised to release a twin-clutch transmission within the next year. Twin clutch transmissions enable gears to be changed without interrupting the transmission of torque. Twinclutch transmissions also combine ride comfort (no jarring during gearshifts, no loss of traction) with CO2 emissions identical to those of a manual gearbox (a reduction of 15 per cent compared with conventional automatic transmissions).

- Julien COTTEVERTE ,Olivier FLOC’HIC -


18.02.2009 / MaP

More News

Renault - an unprecedented commitment to the development of electric motors
A technological clean break Renault is working actively on mobility solutions aimed at marking a clean break in terms of CO2 emissions compared with solutions that propose CO2 reductions of more >>
Renault's powertrain strategy
CO2 emissions: targeting a number one ranking in EuropeIn Renault's view, respecting the environment stands out as the key challenge to which the automobile industry needs to rise if it intends to survive in the long t more >>
Renault's powertrain range: A clean break in terms of CO2 emissions
Renault knows that radically curbing fuel consumption and CO2 emissions is vital in today's world.The brand already figures among Europe's three best-performing carmakers when it comes to aver more >>
Renault extends its biofuel vehicle line-up
Within the framework of its environmental strategy, which is illustrated by the Renault eco2 signature, Renault is actively working on a range of environmentally respectful solutions and has extended its line-up of vehicles that run on a more >>
Ford hits vital co2 targets
* Ford has the UK's most comprehensive range of low CO2 cars * Low CO2 models provide tax, fuel and environmental benefits Ford's latest C-MAX MPV delivers the lowest CO2 emissions in its segment. Engineering developments to Ford C-MAX 1.6 TDCi m more >>
PSA Peugeot Citroën: Eco-driving
By following these few easy tips, you can reduce your car’s fuel consumption and CO2 emissions by up to 20%. Before leaving - Think of the environment when choosing your mode of transportation. - Check your car’s condition regularly. - Avoid carrying unnecessary loads. On th more >>
Peugeot et l’éco-conduite
Grâce à ces quelques conseils simples, la consommation de carburant et les émissions de CO2 de votre véhicule peuvent être réduites jusqu’à 20 % ! more >>
SEAT’s award-winning electronic invoicing system
SAVINGS OF 3 MILLION SHEETS OF PAPER AND 600 TREES    SEAT’s electronic invoicing system has received a prize as the best project in the use of an electronic signature in the private sector, awarded by the C more >>
Ford Focus wrapped with special "green" designs showcase
.. at "100 DESIGNS TO SAVE THE WORLD" Inspired by "green" energy in motion, Ford Thailand brand ambassador "Tata Young" and two leading designers "Vasu Virajsilp" and "Issariya Virajsilp" will unveil three Ford Focus wrapped with special graphic designs more >>
ASIMO Makes First Appearance at Petrosains
ASIMO Kick-starts Road Tour in Petrosains, Inspiring and Creating Interest in Science and Technology The new ASIMO made more >>
Honda FC Sport Design Study Suggests Hydrogen Sports Car Future
Innovative fuel cell packaging demonstrates green performance potential Honda revealed the Honda FC Sport design study model, a hydrogen-powered, three-seat sports car concept, at the 2008 Los Angeles Auto Show.   more >>
Honda Develops Ecological Drive Assist System for Enhanced Real World Fuel Economy
Implementation on All-New Insight Dedicated Hybrid in Spring 2009 Honda Motor Co., Ltd. announced the development of the Ecological Drive Assist System, which combines three functions to enhance fuel economy: the ECON Mode utilizes harmonized control of the continuously variable t more >>
The new Ibiza ECOMOTIVE takes the "ECOBEST 2008" distinction
AT THE ANUAL AUTOBEST ORGANISATION AWARDS The new SEAT Ibiza ECOMOTIVE has been awarded the "ECOBEST 2008" distinction for the best ecological car of the year. This prize is given every year by the AUTOBEST orga more >>
America's most economical car: In the USA, too, the smart fortwo is the number one ...
29.10.2008 terms of environmental friendliness and economy The American environmental authority EPA (Environmental Protection Agency) has put the smart fortwo at the top of its current li more >>
Honda Soltec Begins Sales of Thin-Film Solar Cells for Public and Industrial Use
Honda's wholly-owned solar cell subsidiary Honda Soltec Co., Ltd. (Headquarters: Kikuchi-gun, Kumamoto; President and CEO: Akio Kazusa) will begin sales throughout Japan of thin-film solar cells for public and industrial use on October 24, 2008. Having sold solar cells for home use since October 2007, Honda intends to expand its customer base by manufacturing and selling solar ce more >>
The SEAT Ibiza tops the list of Greencar vehicles in Spain
ACCORDING TO THE GREENCAR MONITOR REPORT SEAT certified excellent results in the month of September in terms of the number of vehicles registered with emission levels equal to or lower than 120 g/km. These re more >>
Mileage Marathon confirms efficiency of Audi models
* Test fleet reaches Los Angeles after 7,865 kilometers (4,887 miles) * Audi Q5’s average fuel consumption is 6.1 liters per 100 kilometers (38.56 US mpg), A4 records 5.3 l/100 km (44.38 US mpg) more >>
Audi : The cleanest diesel is also ultra-efficient
• First leg of Audi Mileage Marathon started in New York * Audi Q7 with ultra low emission system taking part in major real-life test * Best actual fuel efficiency from 7.4 liters per 100 kilometers (31.79 US mpg)   The new Audi Q7 3.0 TDI with ultra low emission system is the cleanest diesel in the world, and an extremely economica more >>
Audi Mileage Marathon- The world’s cleanest diesel in its first endurance test
* Audi launches diesel offensive in the US with major real-world driving tour * TDI with ultra low emission system to prove its supremacy * Dynamic driving performance with highly efficient fuel consumption more >>
Daimler Launches Europe’s Largest Fleet Test of Hybrid Trucks in London
* Ten Fuso Canter Eco Hybrids presented to eight renowned customers * Fuel consumption reduced by up to 15 percent * The three-year fleet test is part of Daimler’s "Shaping Future Transportation" initiative  Daimler AG launched more >>
Already one million vehicles with BMW EfficientDynamics
BMW Group further extends its leading position in the reduction of fuel consumption and exhaust emission levels - 23 models with a CO2 level of maximum 140 grams/kilometre - 23 models fulfil the exhaust emissions norm EU5 as of autumn 2008, new BMW 330d with BMW BluePerformance Technology even at EU6 level.   Thanks to BMW EfficientDynamics, the BMW Group con more >>
Honda FCX Clarity Fuel Cell Vehicle Lease Program Begins with First Customer Delivery
Zero-emissions vehicle now on the roads of Southern California World's First Honda FCX Clarity Customers American Honda more >>
"Travolution" promotes eco-friendly driving
* Trend-setting concepts for traffic infrastructure * Lower consumption, fewer emissions * Biggest project of its kind in Germany * Audi and its venture partners plan follow-on projects A wave of "green" is washing over Ingolstadt: after two years of research, the "Travolution" team has developed a trend-setting concept to improve traffic in more >>
Honda Unveils Japan Model of FCX Clarity Fuel Cell Vehicle
- Leasing in Japan to begin November 2008 Honda more >>
Mercedes-Benz presents the world’s cleanest diesel SUVs
R 320 BlueTEC, ML 320 BlueTEC and GL 320 BlueTEC - The cleanest solution: Mercedes-Benz to introduce the first diesel models with AdBlue injection in America more >>
AUDI - Long journey with low fuel consumption
Maximum efficiency all the way to the finish * Eleven Audi A4 2.0 TDI models take part in efficiency marathon* Target fuel consumption of under four liters per 100 kilometers* New Audi A4 2.0 TDI (88 kW) with just 134 g/km of CO2  Powerful dynamism, stamina and endurance are just as important in sport as out on the road. To be suc more >>
Honda Publishes Honda Environmental Annual Report 2008
Honda Motor Co., Ltd. issued the Honda Environmental Annual Report 2008 (Japanese language version), outlining results of the company’s environmental initiatives for the fiscal year ended March 31, 2008 as well as targets for the current fiscal year ending March 31, 2009. In the report, Honda discloses a wide range of information, including progress made during the previ more >>
Mitsubishi Motors announces new corporate tagline
Corporate logo with new tagline (for overseas markets) Today Mitsubishi Motors Corporation (MMC) announced a new global tagline in order to clarify acros more >>
Honda to Provide its New Fuel Cell Vehicle, FCX Clarity...
... and Other Technologies for the Hokkaido Toyako Summit Honda Motor Co., Ltd. will provide its new fuel cell vehicle, FCX Clarity, as well as Civic Hybrid and other advanced technologies for the Hokkaido Toyako Summit to be held July 7-9, 2008. FCX Clarity (U.S. Mod more >>

more >>
2001-2023 copyright