DRIVEN: MERCEDES E63 AMG
There was an advert on telly a few years ago where a young girl was asked whether she preferred 'Daddy' or 'Chips'. A tough call, naturally, but after a day's umm-ing and ahh-ing she plumped for the potato-based option. I feel the same way about the Mercedes E63 AMG. Because the fastest E-class in town has just ditched its naturally aspirated 6.2-litre V8 in favour of a 5.5-litre twin-turbo V8, the newest kid on the AMG block, and I am finding it one heck of a difficult decision to choose between the two.On paper, and pragmatically speaking, the new direct-injection 5.5-litre twin-turbo engine is obviously the way to go, of course. It's got the same power (518bhp), but more torque over a wider rev range (516lb ft at 1750-5000rpm versus 464lb ft at 5200rpm), and it's cleaner, greener, and leaner (22 per cent leaner, in fact) - giving a perfectly respectable EU combined cycle figure of 28.8mpg.
The 6208cc naturally aspirated V8 is therefore an officially endangered species. It survives now only in the various C63 AMGs (AMG engineers can't squeeze the turbo motor into the C-class's engine bay) and in the SL63 AMG (which is not all that long for this world). Even the SLS motor, whose swept capacity is identical, is no more than a distant cousin, getting the designation M159 rather than the outgoing E63's M156 coding.
But there's no point in being maudlin. The new engine is here, and it's received pretty much rave reviews in the two cars it's been put to use in thus far ( the CLS63 AMG and the S63 AMG ), so it's hard to imagine that the re-engined E63 AMG is going to be anything other than point-blank stunning. Especially since changes to the already sweet chassis are limited to necessary suspension tweaks to cope with the different weight of the new engine.
So it proves. Okay, the cars we tested (both on the Paul Ricard circuit in southern France and on the surrounding roads) were fitted with both the performance pack, bringing peak power up to 549bhp and torque up to 590lb ft, and the driver's package, which lifts the top speed to 186mph. But even so the pace and sheer breadth of grunt of this new engine is deeply memorable, especially considering that it must haul around 1840kg. And more like two tons with a chunky Riggers and passenger on board.
On the road, the extra torque is immediately apparent, with whole-line-of-traffic urge on tap more or less immediately. This is helped, at least in the sportier of its automatic guises (two out of the four modes), by the MCT-7 gearbox, whose single wet clutch and absent torque converter help keep changes swift, decisive and sharp, and which responds intuitively and intelligently to your right foot. In fact our only criticism of the gearbox is that it's still a mite more hesitant than full-house twin-clutch efforts (and the better autos) when you really want split-second, on-demand, manual-style gearchanges.
Torque Converter Clutch - News
The 2012 M-Class line also features a new transmission with a more advanced torque converter lock-up clutch that provides even better fuel mileage, more responsive driving, quieter operation and increased durability. The new transmission is also
This is helped, at least in the sportier of its automatic guises (two out of the four modes), by the MCT-7 gearbox, whose single wet clutch and absent torque converter help keep changes swift, decisive and sharp, and which responds intuitively and
The seven-speed unit forgoes the torque converter of Mercedes' standard seven-speed 7G-Tronic automatic, replacing it with an automatically operated wet start-up clutch. The revised gearbox, produced in-house at a Mercedes factory near Stuttgart in
Mazda says a torque-sensing conical limited-slip differential minimizes wheelspin, and maybe that's also what minimizes the torque steer. It works well. I did find the clutch in the SPEED3 a touch sensitive, almost like an on/off switch as you let it
The six-speed automatic has a manual shift mode and a lock-up torque converter for better fuel economy at highway speeds. In fact, the automatic is rated at 4.8 L/100km on the highway, beating the manual's 4.9. Body stiffness has been increased by 22%
P0740 Torque Converter Clutch Solenoid Valve - Infiniti Forum
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Torque Converter Clutch - Bookshelf
TechOne automatic transmissions
TORQUE CONVERTER CLUTCHES Up to 10 percent of the engine's energy is wasted by torque converter slippage and the speed difference between the impeller and ...Fluid clutches and torque converters
In the preceding sections the term, torque converter, is used in place of torque converter-fluid clutch. In the remainder of this section the term, ...The street rodder's handbook, a step-by-step guide on how to build a show-winning street rod
When required, the torque converter supplements the gear assemblies by multiplying engine torque. The converter-clutch assembly consists of a conventional ...Chilton's guide to automatic transmission repair, domestic cars & trucks, 1980-84
er assembly and the clutch plate the torque converter clutch is in the released ... The torque converter clutch pressure plate is attached to the pivoting ...Classroom manual for Automotive engine performance
Torque Converters An automatic transmission eliminates the use of a mechanical clutch and shift lever. In place of a clutch. it uses a fluid coupling called ...Everyday News Directory
Torque converter - Wikipedia, the free encyclopedia
Like a basic fluid coupling, the torque converter normally takes the place of a mechanical clutch, allowing the load to be separated from the power source. ...
Clutches, Torque Converters, Belts, Online Catalog
Max Torque Clutch #41, 5/8" Bore (402941) Price:$44.95. Click For ... Comet Torque Converter 20 Series Driven (219463, 219462, 219459 & 219461) ...
torque converter: Definition from Answers.com
torque converter n. A mechanical or hydraulic device for changing the ratio of torque to speed between the input and output shafts of a
Torque Converters
A torque converter is the donut-shaped object inside the bellhousing ... If it is lower than specifications, the torque converter one-way clutch is slipping. ...
TORQUE CONVERTER
3 Describe the operation of each major torque converter component. ... The one−way clutch in the torque converter stator is holding. Holding devices (clutches, ...