Monday, September 17, 2007

2007 Renault Laguna Coupe Concept


Renault Press Release

Renault Laguna Coupe Concept 2007Renault has chosen the Frankfurt Motor Show to unveil Laguna Coupé Concept, its vision of a top-of-the-range grand tourer Coupé. Intended for the discerning motorist, who understands performance, driving pleasure, and refinement, Laguna Coupé Concept successfully marries high-tech with high cool. Underpinned by the Four-wheel Active Drive chassis, its boasts a brand new V6 dCi powertrain developed as part of the Renault-Nissan Alliance.

Built on the same platform as New Laguna, Laguna Coupé Concept is a powerful, elegant affirmation of the long tradition of classic coupés. Rooted in its grand touring heritage, Laguna Coupé Concept embodies Renault’s vision of the sports Coupé.

The look and lines of Laguna Coupé Concept share a common bond with the Fluence concept car (2004). It measures 4.685m in length and is distinguished by its flowing, thoroughbred profile, emphasized by a long nose and very short rear overhang. Its aerodynamic crease lines rise from below the grille then powerfully up on to the car’s flanks, elegantly underlining the wings. The lines sweep on to the rear of the car, where they come together over the boot, underscoring the muscularity of car’s shoulders. The glazed area is highlighted by the pure arc of its rim.

Renault Laguna Coupe Concept 2007The low, wide, robust aluminium grille is visually original and hints at a powerful engine behind it. This sense of power is further reinforced by the long, centrally-ribbed bonnet that springs straight from the world of Coupé grand tourers. Its front end houses two headlamp units that give it a haughty look as they stretch back along the front fenders.

Premiered on the Nepta concept car in 2006, the LED headlamps use a technology based on the reflection and propagation of light. The light beams from the main headlamps are reflected by crystal-shaped transparent blocks. The intensity and distribution of the light automatically adapts to the driving conditions. The two LED foglamps blend perfectly with this powerfully modelled front end.

Two narrow, elongated lights, together with the converging crease lines, lend the rear a uniquely stylish, luminous look, which gives Laguna Coupé Concept an aura of refinement and power. Encased in the bodywork, the rear lamps are proudly displayed like gems of technology. They are further emphasised by the flowing crease lines which run above and parallel to them before converging towards the full-length glass roof which tapers down towards a central tail panel. Through the roof’s glazed area the third stop light can be seen. It gives off a soft-focus glow and, like a sort of fountain of light, it faintly mirrors the distinctive pattern of the rear lights. To round off the overall impression of sobriety and elegance, the lower rear end houses an air vent that incorporates two profiled exhausts.

Renault Laguna Coupe Concept 2007The two frameless doors boast their own lights and open on to a totally original cabin. The scissor doors have dedicated Stabilus hydraulic door stays, which hold doors open at any angle. The door sills are ideally placed to help occupants ease themselves in and out of their seats. They bear the etched acronym ‘4RD’ (French for four wheel steering), which denotes the Active Drive chassis.

Laguna Coupé Concept’s cabin is exactly how the cabin of a high-end Coupé should be. The dash draws on the principal stylistic features of New Laguna, albeit in a more exclusive manner. With its soft, pure lines, it appears weightless and airy. The wave­shape of the central strip is the guiding theme, while two side vents close off a long air-conditioning strip that runs the entire width of the windscreen.

The interior exudes contentment and well-being. A large, originally-shaped screen in the centre of the dashboard stretches out towards the lateral vents, which are styled to resemble jet plane nozzles. Apart from journey information displays (navigation, radio, music players, video, and Bluetooth® phone kit), the screen also displays ambient images inspired by the science of light therapy. The air-conditioning controls are located in the centre of the dashboard, in an easily identifiable dedicated section framed by vents. Designed for intuitive ease of use and reach, they are like crystal gems set in a chrome display case.

In a nod to the design codes of high-end sports Coupés, the spokes of the steering wheel are deployed like the petals of a flower, guiding the driver’s gaze to the binnacles on the dashboard. The ethereal steering column runs into a heavy aluminium shell that houses controls which resemble high-precision micrometers.

Instrumentation is made up of two analogue and digital binnacles in the driver’s line of sight, the fruit of high-precision technology and mechanics comparable to that used in quality clockmaking. The originally shaped binnacles are capped by a porous cowling that lets the light pass and contributes to the way in which the binnacles play with depth and texture. With their mat-finish aluminium surrounds, they have been designed like headlamps.

The cabin‘s fit and finish plays on contrast. The roof, dashboard, central tunnel, and the lower section of the door panels are covered with grey faux leather, whereas the seats and other elements (door pillars, instrument cluster cowling, top of the central armrest) are covered in leather with copper and metal highlights and copper-coloured stitching. Laguna Coupé Concept’s floor is covered with a contemporary, protective, metal mesh.

Driver and passenger can nestle comfortably into the roomy asymmetrical front seats, whose airy architecture provides firm, balanced support. They seats are at one with the chassis and wrap snugly around their occupants. Their backrests, whose colour echoes the Aluminium White of the car’s bodywork, swivel to afford easy access to the back seats, with the front seat cushion sliding automatically forward. The two rear seats are also asymmetrical and separate, but the hugging sweep of the car’s waist-belt gathers them into its U-shape, creating a sense of security. Between the two seats there is a ski flap, on which sits a first aid box. Both rear passengers can sit back and watch what’s showing on the Samsung multimedia players housed in the back of the front seats. The long central tunnel, which houses the slim-style gear lever, the Start/Stop button, and the backlit navigation controls, acts as a link joining front and rear.

The Bose® sound system was tailor-made for Laguna Coupé Concept. The ten speakers treat the four occupants to sound whose standards of quality and power are akin to the acoustic clarity of a concert hall: the perfect accompaniment to the sheer energy of Laguna Coupé Concept.

A Coupé of this class just had to have a powerful, responsive engine to match its elegance and passionate feel. Renault has therefore chosen Laguna Coupé Concept to premiere its brand-new V6 dCi.

The result of close collaboration with Nissan as part of the Alliance, this new 2,993cc V6 dCi block will come as standard. It delivers a peak output of 170-195kW (230-265hp) and a maximum torque of 450-550Nm, depending on the version. Good for 0-100kph in only seven seconds, the engine is outstandingly supple, rounded, and balanced. It responds immediately to the open throttle with power and stretch. It drives through a 6-speed automatic transmission, offering outstanding driving pleasure, well-controlled fuel-consumption, and CO2 emissions lower than 200g/km.

Developed from the same platform as New Laguna, Laguna Coupé Concept is the first car to feature the new four-wheel Active Drive chassis. This high-tech underpinning, developed by expert engineers at Renault Sport Technologies, guarantees the ultimate in sheer sporting sensation and dynamic driving pleasure. It allies agility with stability to set new standards in safe handling. At low speeds the chassis offers greater manoeuvrability, while its road-holding is so true that it cleaves to the road as surely as a train on rails. And so driveable is Laguna Coupé Concept that there is no denying the sheer pleasure of being at the wheel. The car guarantees high-quality ride comfort and peace of mind for occupants, who can feel the benefits of unparalleled standards of active safety.

Laguna Coupé Concept’s 20-inch aluminium wheels lend it poise and emphasize its image of dynamic performance and power. Their helix design cleverly hides the nuts and bolts from sight, while also efficiently ensuring that the brake callipers cool. The generously sized 245/35 Michelin Pilot Sport tyres allow the car to handle like a sports car, but in absolute safety, for even more driving pleasure.

Laguna Coupé Concept makes a statement about its owner’s life-style and personality. A car for the car-lover, it appeals to 40-somethings who are passionate about automobiles and motor sport – connoisseurs who are demanding, ambitious, and driven by a desire for professional success. Prone to falling in love with a car at first sight, they are quite capable of changing brand, and will appreciate the style, the technology, and the design and production qualities of Laguna Coupé Concept.

Friday, September 14, 2007

CamPro Technology


The Campro engine is the first automotive engine ever developed together with Lotus (car) by the Malaysian automotive corporation, Proton.[1] The name Campro is short for Cam Profile. This engine powers the Proton Gen-2, the Proton Satria Neo, the Proton Waja Campro, the Proton Persona as well as Proton's future models. The Campro engine is aimed to show Proton's ability to make their own engines that produces good power output and meets newer emission standards.

All Campro engines incorporate with drive-by-wire technology (specifically electronic throttle control) for better response,[citation needed] eliminating the need for friction-generating mechanical linkages and cables. There have been some issues with cracking oil sumps but apparently Proton have introduced a new part recently to solve this problem. A recall has not been announced.



Basic DOHC engine

The basic Campro engine coded as S4PH is a basic DOHC 16-valve 1.6 L engine that produces 110 bhp (82 kW) @ 6,500 rpm of horsepower and 148 N-m of torque. This is the engine that powers the Proton Gen-2. The S4PH engine can be fitted with Cam Profile Switching (CPS) and Variable Inlet Manifold (VIM) technology. Besides this 1.6 Litre engine, Proton has produced the 1.3 Litre version of the Campro engine.

Even though the S4PH engine seems to be quite powerful at higher revs, its performance is reportedly sluggish at lower revs and this is proven by driving the Gen-2 uphills where drivers who drive the manual transmission version have to shift a lot between 2nd gear and 3rd gear. This is due to its torque dip in the crucial 2,000 ~ 3,000 rpm operating range, where the torque actually decreases slightly before picking up back to the maximum torque at 4,000 rpm. This torque characteristic can clearly be seen in manufacturer published engine performance curves.

Before the engine is ready to be installed in the Gen-2 cars, Proton installed the engine in the Waja specialized for on-road tests.

Currently the Campro engines installed in the Gen-2 has none of the promised cam profile switching (CPS) and variable inlet manifold technologies. No date nor any information has been known as to when Proton will equip its models with the promised full-spec engine.

Another engine option for the basic DOHC engine is a 1.3L engine coded as S4PE. The S4PH engine produces 94 bhp (70 kW) @ 6,000 rpm and the torque of 120 N-m @ 4,000 rpm, much more powerful than most 1.3L rivals, even with variable valve timing technology, though it too suffers for this omission (like its bigger brother) by displaying a torque dip at typical engine operating speeds.

The bore x stroke dimensions for both engines are as follows:-

  • S4PH (1.6L): 76 x 88 mm, resulting the displacement of 1597 cc.
  • S4PE (1.3L): 76 x 73.4 mm, resulting the displacement of 1332 cc.

Campro CPS and VIM engine

In addition to the basic DOHC engine, Proton developed its own variable valve timing technology that works similar with other variable valve technologies such as Honda VTEC and Toyota VVTi, named as CPS (Cam Profile Switching) technology. The usage of CPS tehnology will raise the maximum power up to about 127 bhp and will improve the low-end torque to its maximum value which will maintain until about 5,000 rpm.[citation needed] The technology is said to be applied to newer Gen-2s and future models starting from the end of 2005, but currently the CPS technology is still under testing.

The Campro's Variable Intake Manifold technology is currently being developed by Robert Bosch GmbH, and is expected to debut in the second half of 2007



Campro GDI engine

Recently, Proton is developing their own gasoline direct injection version of Campro engines which will be used in the future. Currently, the Campro GDI engine is still under research and development, therefore very little information available for the Campro GDI engine



Hybrid Campro engine

Recently, Proton and Lotus have announced their concept model of a Proton Gen-2 powered by a hybrid powerplant that uses the Campro engine. The concept model will be revealed during the 2007 Geneva Motor Show from 8 ~ 18 March 2007 [1][2].

The hybrid powerplant system, which is known as EVE system (Efficient, Viable, Environmental) will be using the same S4PH engine as the one that powers the present gasoline version of the Gen-2, combined together with a 30 kW, 144V electric motor. The main purpose of the hybrid powerplant system is to provide a hybrid system that can be retrofitted to existing models, retaining the same powerplant and also eliminates the need to develop a completely different platform, like the Honda Civic Hybrid.

The EVE Hybrid System will have 3 key technologies:-

  1. "Micro-hybrid" start-stop system - An integrated starter-alternator system is installed to switch off the engine automatically when the engine stops, for example at the traffic light. The engine will automatically restart when the gas pedal is depressed.[citation needed]
  2. Full parallel hybrid technology - Combines the existing S4PH engine with a 30 kW, 144V electric motor, resulting in higher power (141 bhp combined), higher torque (233 N-m combined), lower emission (up to 22% carbon dioxide reduction) and better fuel economy (up to 28%). The system also includes regenerative braking system.[citation needed]
  3. Continuously Variable Transmission (CVT) - The CVT system provides an infinite number of gear ratios for better efficiency.[citation needed]

The combined power and torque for the powerplant system are as follows:-

  • Max power (gasoline engine only): 110 bhp (82 kW) @ 6,000 rpm
  • Max torque (gasoline engine only): 148 N-m @ 4,000 rpm
  • Max power (combined): 141 bhp (105 kW) @ 5,500 rpm
  • Max torque (combined): 233 N-m @ 1,500 rpm (limited to 180 N-m continuous)