Carbon82 Moderator November 20, 2015 Share November 20, 2015 ↡ Advertisement 5 Link to post Share on other sites More sharing options...
Carbon82 Moderator November 20, 2015 Author Share November 20, 2015 This new engine should move the car better, in speed and sales. Strong competitor to Kia Sorento. With the new CX-9, engineers sought to instill driving dynamics befitting of a Mazda—agile handling, tight steering and a responsive, controllable powertrain. To do this, they found smart solutions to keep CX-9's structure light, yet rigid, with SKYACTIV Technology. They developed a new turbocharged SKYACTIV-G 2.5T engine that delivers instant throttle response, class-leading torque and an estimated around 20-percent increase in fuel- efficiency, based on initial estimates of U.S. EPA testing cycles, making CX-9 among the most efficient vehicles in its class. One piece of technology is Mazda's Dynamic Pressure Turbo, the world's first turbocharger with the ability to vary the degree of exhaust pulsation depending on engine speed. The system routes engine exhaust to the turbocharger's turbine through smaller ports at low rpm. It works similarly to when one might place his or her thumb on a garden hose, creating a strong amount of pressure through a smaller outlet. This allows the turbocharger to spool up quickly, creating instant boost—up to 1.2 bar (17.4 psi) of pressure. When the engine is in the heart of its rev range, it opens up secondary valves, allowing for greater amounts of exhaust gas to pass through the turbocharger. The system is complemented by the 2.5-liter engine that already benefits from more torque at atmospheric pressure than a comparable 2.0-liter by virtue of its size. Further assisting CX-9 to maximize turbocharger efficiency is a 4-3-1 exhaust. With this setup, the exhaust from the middle two cylinders (2 and 3) is joined into a single port, while the exhausts from the outer cylinders (1 and 4) each have their own ports. These three ports come together at the entrance to the turbocharger's exhaust side, where there is always one exhaust pulse arriving every 180 degrees of crankshaft rotation. Not only does this very compact manifold keeps the exhaust pulses separate for maximum energy extraction, it also harnesses each exhaust pulse to suck the residual exhaust from the adjacent ports. That only tells so much of the story. In order to increase fuel-efficiency, SKYACTIV-G 2.5T employs the efficient combustion of Mazda's SKYACTIV-G 2.5-liter engine and marries it to a cooled exhaust gas recirculation (EGR) system, which helps prevent burning excessive amounts of fuel when the engine is running at higher temperatures. In many turbocharged cars, heat is controlled through adding more fuel to the combustion chamber; Mazda's cooled EGR reduces the need for that. While Mazda sees no discernible benefits on regulated test cycles from this technology, it benefits the consumer through real-world gains. The cooled EGR helps bring engine temperatures down from approximately 500 degrees C (932 F) to just over 100 degrees C (212 F), allowing SKYACTIV-G 2.5T to operate with a compression ratio of 10.5:1—one of the highest numbers of any gasoline-powered, turbocharged engine. The net result: 310 lb-ft (420 N-m) of torque at a low 2,000 rpm and 250 horsepower at 5,000 rpm on 93-octane gasoline (227 horsepower on 87-octane gasoline). 6 Link to post Share on other sites More sharing options...
Carbon82 Moderator November 21, 2015 Author Share November 21, 2015 4 Link to post Share on other sites More sharing options...
X5actor 4th Gear November 21, 2015 Share November 21, 2015 Simply stunning looks I must say 1 Link to post Share on other sites More sharing options...
Tayspiderx 3rd Gear November 21, 2015 Share November 21, 2015 Replicating Audi with the wood,metal accents n the MMI lookalike. Should be in time to launch when COE dips next year 1 Link to post Share on other sites More sharing options...
Hamburger Hypersonic November 21, 2015 Share November 21, 2015 no diesel no talk.... 2 Link to post Share on other sites More sharing options...
MQX87511 5th Gear November 21, 2015 Share November 21, 2015 no diesel no talk.... you switch from "no snail no talk" to "no diesel no talk" next is "no xx no talk"? no hybrid no talk no MT no talk no dct no talk no cvt no talk no 4wd no talk ... Link to post Share on other sites More sharing options...
Hamburger Hypersonic November 21, 2015 Share November 21, 2015 you switch from "no snail no talk" to "no diesel no talk" next is "no xx no talk"? no hybrid no talk no MT no talk no dct no talk no cvt no talk no 4wd no talk ... if there is a diesel, all criteria shall be met. Link to post Share on other sites More sharing options...
Quantum 5th Gear November 21, 2015 Share November 21, 2015 (edited) This new engine should move the car better, in speed and sales. Strong competitor to Kia Sorento. With the new CX-9, engineers sought to instill driving dynamics befitting of a Mazda—agile handling, tight steering and a responsive, controllable powertrain. To do this, they found smart solutions to keep CX-9's structure light, yet rigid, with SKYACTIV Technology. They developed a new turbocharged SKYACTIV-G 2.5T engine that delivers instant throttle response, class-leading torque and an estimated around 20-percent increase in fuel- efficiency, based on initial estimates of U.S. EPA testing cycles, making CX-9 among the most efficient vehicles in its class. One piece of technology is Mazda's Dynamic Pressure Turbo, the world's first turbocharger with the ability to vary the degree of exhaust pulsation depending on engine speed. The system routes engine exhaust to the turbocharger's turbine through smaller ports at low rpm. It works similarly to when one might place his or her thumb on a garden hose, creating a strong amount of pressure through a smaller outlet. This allows the turbocharger to spool up quickly, creating instant boost—up to 1.2 bar (17.4 psi) of pressure. When the engine is in the heart of its rev range, it opens up secondary valves, allowing for greater amounts of exhaust gas to pass through the turbocharger. The system is complemented by the 2.5-liter engine that already benefits from more torque at atmospheric pressure than a comparable 2.0-liter by virtue of its size. Further assisting CX-9 to maximize turbocharger efficiency is a 4-3-1 exhaust. With this setup, the exhaust from the middle two cylinders (2 and 3) is joined into a single port, while the exhausts from the outer cylinders (1 and 4) each have their own ports. These three ports come together at the entrance to the turbocharger's exhaust side, where there is always one exhaust pulse arriving every 180 degrees of crankshaft rotation. Not only does this very compact manifold keeps the exhaust pulses separate for maximum energy extraction, it also harnesses each exhaust pulse to suck the residual exhaust from the adjacent ports. That only tells so much of the story. In order to increase fuel-efficiency, SKYACTIV-G 2.5T employs the efficient combustion of Mazda's SKYACTIV-G 2.5-liter engine and marries it to a cooled exhaust gas recirculation (EGR) system, which helps prevent burning excessive amounts of fuel when the engine is running at higher temperatures. In many turbocharged cars, heat is controlled through adding more fuel to the combustion chamber; Mazda's cooled EGR reduces the need for that. While Mazda sees no discernible benefits on regulated test cycles from this technology, it benefits the consumer through real-world gains. The cooled EGR helps bring engine temperatures down from approximately 500 degrees C (932 F) to just over 100 degrees C (212 F), allowing SKYACTIV-G 2.5T to operate with a compression ratio of 10.5:1—one of the highest numbers of any gasoline-powered, turbocharged engine. The net result: 310 lb-ft (420 N-m) of torque at a low 2,000 rpm and 250 horsepower at 5,000 rpm on 93-octane gasoline (227 horsepower on 87-octane gasoline). wah, quite attractable, a bit disappoint is 2.5T only 250hp, to drag a 7 seat full size SUV, should be 300hp above reasonably, if it's 300hp above +420Nm, wins new XC90 hands down, strong rival of Q7/XC90/Sent Fe/Sorento/X5 Edited November 21, 2015 by Quantum 1 Link to post Share on other sites More sharing options...
Holdenutessv Turbocharged November 21, 2015 Share November 21, 2015 Figures seems like only a bit better than the MZR 2.3 DISI... Hopefully a remap would solve that. 2 Link to post Share on other sites More sharing options...
Invigorated Supercharged November 21, 2015 Share November 21, 2015 Looks very sleek and the interior puts some other jap makes to shame. Should sell much better than the older cx9. Link to post Share on other sites More sharing options...
Banz86 5th Gear November 21, 2015 Share November 21, 2015 Oh Wow, I really love the design of CX9. If there is a diesel version, it'll be awesome.. Link to post Share on other sites More sharing options...
7hm Turbocharged November 21, 2015 Share November 21, 2015 Very interesting to see that Mazda is going the turbocharged route after touting their SkyActiv technology so much. I think the rear lights are too slim, but the front end has a really fiercesome look that doesn't seem far away from show-concept cars. The new exhaust technology is pretty interesting too... 1 Link to post Share on other sites More sharing options...
Spring Moderator November 21, 2015 Share November 21, 2015 Aesthetically, this is awesome 5 Link to post Share on other sites More sharing options...
Mcscot 5th Gear November 21, 2015 Share November 21, 2015 Looks great both inside and outside ... how about the $$$$$? I don't think the numbers will look too good! Link to post Share on other sites More sharing options...
Thaiyotakamli Supersonic November 21, 2015 Share November 21, 2015 Wont go well in sg la. Unless sell for 160k haha 2 Link to post Share on other sites More sharing options...
Fastsapphire 1st Gear November 21, 2015 Share November 21, 2015 Nice! 1 Link to post Share on other sites More sharing options...
Quantum 5th Gear November 21, 2015 Share November 21, 2015 Wont go well in sg la. Unless sell for 160k haha 160k? you want XC90/Q7/Sorento close shop lah ↡ Advertisement Link to post Share on other sites More sharing options...
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