The Wartsila-Sulzer RTA96-C turbocharged two-stroke diesel engine could be a contender if the Seven Wonders of the World were redesigned for the twenty-first century. If you’re a fan of the internal combustion engine in all of its various forms, then take a look at these data, which detail a truly remarkable engineering feat. It is the world’s most powerful and efficient engine today.
It comes in 6 cylinderin-line to a staggering 14 cylinder version, and is designed to supply the motive force for a variety of supertankers and container ships. The bore of the cylinder is 38 inches, while the stroke is a little over 98 inches. Each cylinder produces 7780 horsepower and has a displacement of 111,143 cubic inches (1820 litres). The 14-cylinder variant has a total displacement of 1,556,002 cubic inches (25,480 litres).
The whole engine weight is 2300 tons, with a length of 89 feet and a height of 44 feet. The crankshaft alone weighs 300 tons.
The RTA96C-14 has a maximum power output of 108,920 hp at 102 rpm and, remarkably, has a thermal efficiency of almost 50% at maximum economy. More than half of the energy in the fuel is transferred to motion in this way. At maximum power, its Brake Specific Fuel Consumption (BSFC) is 0.278 lbs/hp/hr.
The new generation of larger container ships required a larger engine to propel them, and ship owners preferred a single engine/single propeller arrangement.
While cylinder layouts for large-scale container liners have been considered in the range of 14, 16, and 18, the 14-cylinder in-line low-speed engine is the first supplied by any engine manufacturer.
Single engine/single propeller designs are preferred by shipowners, and the new generation of larger container ships (or post-Panamax) need a larger engine to propel them.
The RTA96C-14 turbocharged two-stroke diesel engine, manufactured by Wartsila-Sulzer in Switzerland, is the world’s largest and most powerful diesel engine.
The 14-cylinder RTA96C engine’s peak capabilities have now surpassed 80 MW, making it suitable for a single-screw Post-Panamax container liner, which is the largest container liner that can be built given its cost-effectiveness.
Due to the maintenance knowledge gained with the vast number of RTA96C engines currently in service, Sulzer has been able to boost cylinder output since their first operation in 1997. The new engine’s increased kW rating reaches a power output of 68,640 kW, which is a 4% improvement over the original RTA96C.
Despite the high levels of power produced by these engines, they have very low wear rates. The wear rate of the dialetral cylinder liner is on the order of 0.03 mm/1000 hours.
This low cylinder wear may be due to a connecting rod that attaches to a “crosshead” that rides in guide channels, as opposed to conventional automotive engines, where the connecting rod is joined directly to the piston at the top. Instead, the top of the connecting rod links to a “crosshead,” which is then connected to the piston by a long piston rod. This reduces the connecting rod’s sideways forces, which are absorbed by the crosshead rather than the piston. The cylinders in an automobile engine grow oval-shaped over time due to sideways stresses.
Fuel usage is 0.260 lbs/hp/hour at optimal efficiency. Most automotive and small aircraft engines, on the other hand, can only attain BSFC ratings of 0.40-0.60 lbs/hp/hr and thermal efficiency of 25-30%.
The RTA96C was designed and developed in close collaboration with the firms engaged in the early stages of the first commercial project: P&O Nedlloyd BV, Ishikawajima Harima Heavy Industries Co Ltd (IHI), and Diesel United Ltd, the ship designer and builder.
The first engine, an 11-cylinder unit, was begun on the test bed of Diesel United Ltd, Aioi, in March 1997.
Since then, 86 RT96C engines with eight, nine, ten, eleven, and twelve cylinders in line have been delivered or are on order, with 25 now in operation.
What is the strongest diesel truck engine?
Ford Super Duty 2017 With a 6.7-liter Power Stroke turbo diesel V8 engine and 440 HP + 925 lb-ft of torque, it is currently the most powerful diesel on the market. With a staggering towing capability of 32,500 pounds, this beast can haul just about anything.
What diesel engine has the most horsepower?
Ford Super Duty is a truck manufactured by Ford. It is now the most powerful diesel vehicle, with a 6.3 liter engine. On a trailer, this 7-liter Power Stroke turbo diesel engine delivers 440 horsepower and 925 pound-feet of torque. You can pull practically anything with this vehicle’s remarkable towing capability of 32,500 pounds.
What has more power Duramax or Cummins?
Pickup truck owners and buyers are frequently devoted to a single brand, and this is especially true with diesel truck buyers who purchase trucks solely on their engines. General Motors’ Duramax, Ford’s Power Stroke, and Cummins are the top three brands in the American diesel truck market.
The latter is mostly found in Fiat Chrysler’s (FCA) Ram 2500 and 3500 trucks, although its engines can also be found in Nissan’s Titan XD. FCA also owns VM Motori S.p.A., an Italian business that makes the EcoDiesel engine, a V6 with a 3.0-liter displacement that Jeep Wrangler began employing in its first diesel model a few years ago.
Is one engine superior to the other, or are there only minor differences? The best option is determined by the consumer’s needs. The following is a list of all the distinctions between these three diesel pickup truck brands.
Which Engine is Older?
Cummins was founded in 1919, and in 1988, it began supplying diesel engines to Chrysler Corporation’s Ram pickup vehicles. The GM Duramax range, on the other hand, has only been around since 2001. Since 1994, the Ford Power Stroke moniker has been in use. Even if you look past the GM and Ford engine brand names, Cummins is still older. When you compare Duramax engines to Cummins and Power Stroke engines, it’s clear that Cummins engines are the older of the two.
Which Engine Produces More Torque?
Towing is a major cause for the existence of huge, heavy-duty trucks. Torque is required for towing. Diesel engines may generate far more torque than gasoline engines. This is because their combustion process is longer and more consistent, allowing for longer connecting rods.
Due to a new fuel-injection system, the torque of the 2021 Ford F-Series Super Duty with the optional 7.3-liter 475-horsepower turbocharged V8 engine has been increased to 1050 lb.-ft (36K PSI). This is greater torque than the 6.7l Power Stroke turbodiesel engine in the 2019 Ford F-150, which produces 935 lb.-ft.
Meanwhile, the Duramax diesel engines in the 2021 Chevy Silverado HD and GMC Sierra HD are both capable of 910 lb.-ft. of torque. The 277-horsepower 3.0-liter turbodiesel engine in the 2021 GMC Yukon and Yukon XL produces only 460 ft.-lb. of torque.
The 6.7-liter Cummins turbo diesel engine in the Ram Heavy Duty, on the other hand, delivers 930 lb.-ft. of torque. The Ram 3500 Laramie, which is larger and more luxurious, produces 1,000 lb.-ft. of torque.
Apart from the smaller GMC, all of the domestic models have similar torque levels. Other elements, like as how much they weigh and how much optional equipment they must carry at all times, have an impact on performance.
What About Horsepower?
Torque is more crucial for towing than horsepower, but horsepower is equally important. Whether or not the truck is hauling anything, greater horsepower allows it to accelerate faster. You’ll welcome the extra horsepower if you need to accelerate rapidly while pulling a hefty load. Power Stroke and Duramax are fairly close in this category, with 450 for the former and 445 for the latter. Ram trucks use a Cummins engine that delivers 400 horsepower. Again, Power Stroke wins this category with the greatest horsepower, albeit by a razor-thin margin.
Torque and horsepower are important considerations when determining how much a truck can haul. Two other factors, though, play a role. The first is the truck’s structural design, and the second is the engine’s strength. Towing above 26,000 pounds in the United States, on the other hand, necessitates a commercial driver’s license.
The Ram Cummins and Ford Power Stroke can also tow that much, but the Duramax falls short with a total towing capacity of 23,300 pounds. The Power Stroke triumphs once more, with a total towing capacity of 34,000 pounds vs 31,210 pounds for the Ram. If you don’t have a commercial license and are looking at these stats, any of these trucks will certainly meet the needs of the average truck owner.
Which diesel truck is fastest?
How can a four-ton Ford manage to reach 60 mph in under 6.1 seconds? Its Power Stroke engine produces 1050 pound-feet of torque. The 2020 Ford F-250 Super Duty is the fastest diesel truck we’ve ever tested, reaching 60 mph in 6.1 seconds.
Which is better Duramax or Cummins?
The Cummins engine is currently a 6.7-liter inline-six, whilst the Duramax is a 6.6-liter V8. The Duramax is the most powerful engine in terms of horsepower, but the Cummins is the most powerful in terms of torque, with values up to 1,000 ft-lbs depending on the truck.
Is Cummins better than Power Stroke?
Although most diesel aficionados seem to agree that the Cummins Turbo Diesel is the more reliable engine, Ford pickups last longer and are more reliable than Ram pickups. The following are the most serious issues with these two engines:
On trucks with the CTD that do a lot of towing, the exhaust manifold issue with shrinking and cracking is most common.
The Powerstroke Diesel turbocharger issue primarily affects tuned engines, as the increased horsepower and torque causes the turbo’s ball bearings to wear out.
Is Cummins the best diesel engine?
Cummins diesel engines are known all over the world for being exceptional truck engines, not only because they provide the horsepower and torque a work truck requires to carry a heavy load, but also because they are known for their unparalleled durability.
Who has the most reliable diesel truck?
Diesel fans are well aware that pre-emissions diesel trucks were more reliable in general. One of them is the LB7 Duramax. There are no EGR, DPF, or SCR emissions control systems on this vehicle. This truck was rather light for an HD pickup, allowing it to achieve up to 22 mpg when not towing or hauling. It also had the option of a heavy-duty Allison transmission to help in towing.
The 6.6L Duramax V8 with Bosch common-rail injection was used in the 2500 and 3500 HD models in this model year range, and it was unaffected by later emission systems. These trucks are recognized for being dependable workhorses that can produce up to 450 horsepower when properly programmed.
- For lots of towing capability, choose between an Allison six-speed automatic or a ZF-6 six-speed manual transmission.