2013 Ram 1500 Powertrain: Deep Dive

Posted on 12. Apr, 2012 by in Auto News


(Editor's Note – It is not often that a new or substantially revised pickup truck on the U.S. market explodes But what the 2013 Ram, who when introduced at the 2012 NYIAS We knew truck had a lot of sense Ram Truck. . but we advise truck is likely to cause a stir at Ford and General Motors, not to mention Nissan and Toyota. And it is for this reason we take a closer look at the car and its technology have collapsed, several discrete stories, each focused on one aspect of the truck, which has been recreated. No doubt you have seen and read many stories that do a good job of hitting the highlights, but there's more. And that is what we are trying to bring them here in this series. not read if you are not interested then. But if you want to change more likely to know about the truck, and press the tragectory what types of pickups we see in the near and far future, please feel free to read.)

Quite possibly the biggest news of the 2013 Ram 1500 the replacement of the entry-level-3 ,7-liter V-6 engine with a powerful and efficient 3.6-liter Pentastar V-6. In addition to this new engine for Ram half-ton truck is called a segment-first eight-speed ZF gearbox TorquFlite offered 8th The new transmission will also be offered as an option for both V-8 offer: the existing 4.7-liter single-overhead-cam V-8 and 5.7-liter OHV Hemi V-8. The new-for-2012 six-speed transmission is for those who want to keep the center console, auto-stick option.

New V-6

The Pentastar engine has seen great success with other Chrysler vehicles, and it looks to have some impressive numbers behind it, especially when compared with replacing the old 3.7-liter V-6. We are told the new engine produces 305 horsepower and 269 pounds-feet of torque, which is 42 percent more horsepower and 13 percent more torque. (The previous V-6 has 215 horsepower and 235 pound-feet of torque). Ram is the coverage of the new V-6-setup from zero to 60 mph 3 full second faster go with the Pentastar engine.

Although the final numbers have not been released, said Ram combining the fuel economy will be the market leader in the segment and more than 20 percent better fuel economy in equivalent packages.

For those who are not familiar with the new Pentastar engine (there is already a great success in both the Jeep Wrangler and Grand Cherokee to see), it uses a 60-degree aluminum block and head with integrated exhaust manifold, two overhead camshafts, aluminum -piston, six-bolt main bearings and connecting rods. High-flow, fell inlet ports and an 10.2:1 compression is all controlled by a large engine control module for the best balance of fuel, power and refinement. There are no two turbos or cylinder deactivation, however.

Despite the relatively high compression ratio, the Pentastar designed to run on 87 octane fuel and is E85 compatible. The engine includes variable valve timing with two independent camshaft adjustment, a. Nearly 90 percent of peak torque from 1800 to 6400 rpm

The increased power means that Ram now offer to the V-6 option with all-wheel drive and with the cabin crew, none of whom offered to the previous V-6.

TorqueFlite 8

The new 8HP45 and 8HP70 transmission will be offered across the board in all three engines. The lighter-duty eight-speed is the only game for the V-6 engine to be, and its torque is 332 pounds-feet. The heavier eight-speed has a torque of up to 515 pounds-feet.

The new TorqueFlite 8 doubles the number of transitions of the previous V-6 trans offered, with an impressive range of courses, starting with a very low first gear with 4.71:1, then 2, 3.14:1, 3rd 2.10:1 , 4th , 1.67:1, 5th 1.29:1, and sixth; 1.00:1. There are two overdrive with 7 at 0.84:1 and 0.67:1 at the eighth. The reverse gear is a strong 3.30:1. The eight-speed is standard with the Pentastar and an option for the 4.7-and 5.7-liter V-8s. Standard transmission for the V-8s will be the 65RFE six-speed.

The eight-speed transmission offers a segment first e-shift dial, it is a simple hand-reach on the center console. The dial replaces both the column and center console automatic transmission. The dial on the dashboard is easy to see and easy to use, with settings for Park, Reverse, Neutral and Drive. If this system looks familiar, the electronic voter is already used in some grades 6, 7 and 8 big rigs.

This new program allows a quick turn around "blind" transitions from Drive and back to the swings from snow or mud, or to quickly. From the busy parking lots and construction sites The new transmission is offer manual shifting on the front right (3 clock), part of the steering wheel, where "shift -" and "shift +" keys. The attacks also allow the driver to block certain upper gears as necessary to keep the transmission in the highest gear rpms for situations such as heavy hauling or towing.

Electronic transmission has more than 40 different displacement maps and a tutorial that can move up and down depending on various inputs from the entire vehicle. The software also takes into account variables such as engine torque gradients, kick down events, longitudinal and lateral acceleration, hill detection, friction detection and downshift story displacement mapping over time. Other parameters included in the computer are vehicle speed, stability control and temperature. The idea is that every shift is the right requirements for almost every situation needs to be tuned.

Another advantage of the extra gears and their extra-wide ratios is that the axle for lighter weight and smaller size can be reduced, and to allow for even better fuel efficiency. Although four courses are the Ram 1500 lineup available, most of the vehicles will have either 3.21:1 or 3.55: 1 ring and pinion. More aggressive gear as 3.92:1 and 4.10:1 ratios are likely to be used, but we would expect only limited capability offers, such as an R / T or even be renamed version.

The V-8s

Both V-8s will continue the existing 4.7-liter V-8 and use the 5.7-liter Hemi V-8 (90-degree cast iron, aluminum heads), and both come with the 65RFE six-speed transmission standard with the new eight-speed option on most trim packages.

As we mentioned above, the 4.7-liter is no longer the base engine for 4×4 or crew-cab models, both of which are now with the V-6 is available. The Hemi V-8. Continue the four-cylinder deactivation Eco-Mode, between a 5 percent and 20 percent can provide fuel advantage provide depending on the driving behavior And not on the Hemi fuel cut-shut-off function, which was developed specifically remember to help save fuel.

Although fuel economy figures have not yet been published, we would expect both V-8s offer 10-percent incremental fuel economy gains with the new eight-speed transmission. Previous EPA fuel economy ratings were for the two V-8s with two-wheel drive 14/19 mpg city / highway with the 4.7-liter and 14/20 mpg for 5.7-liter. The four-wheel-drive denominated 13/18 mpg with the 4.7-liter and 13/19 mpg with the 5.7-liter. We would assume that unless Ram can drastically improve fuel economy numbers for smaller V-8, the 4.7 is the lowest take-rate-engine remain the family. We assume that is why most of the Ram 1500 – as much as 80 percent, we are told – sold with the Hemi.

Transfer Case

Both four-wheel drive to seek alternatives to carryover models from Borg-Warner. The first part-time two-speed ratio is 44-45 transfer case will be available. With all three engines and several trim packages Selector choices include 2WD, N, 4WD Lock, 4WD LOW. The second Borg-Warner transfer case option is the 44-44 "on-demand" system that can be used for an "auto" mode, which can be selected at any time and will suit all road conditions. Selector choices for this model inlcudes 2WD, 4WD Auto, N, 4WD Lock, 4WD LOW. The four-wheel drive will be offered only with the Hemi V-8.

The setup in the part-time system is a knob on the dashboard (plugs into a rule with the 65RFE be), while the full-time-capable selector uses a series of push-button settings directly under the 8-speed transmission button. To help the driver exactly what information do the tires, suspension and transfer case, there is a special information screen (in the 3.5-inch space between the speedometer and tachometer) to communicate to all incoming data and settings.

The Powertrain setups will no doubt be a huge improvement for the half-ton Ram and maybe they will help market share in the highly competitive segment. Which of course means neither Ford nor GM stand still as a result of these announcements.