: New sidi engine 2012

01-06-11, 04:37 PM
I hear that the 2012 SRX will be equipted with a 3.6 Liter V6 Spark Ignition Direct Injection (SIDI) Engine for all 2012 SRX Models putting out 320 to 330 HP. :burn:

01-06-11, 07:46 PM
This topic is covered in detail here.



01-07-11, 07:03 AM
What is "Spark Ignition"? I thought all internal combustion engines had a spark ignition? Such a fancy term.

01-07-11, 03:34 PM
>>What is "Spark Ignition"? I thought all internal combustion engines had a spark ignition? Such a fancy term.>>>>

I also understand that rthe 2012 SRX will be equipped with round rubber tires.

01-07-11, 06:33 PM
This video on YouTube demonstrates the SIDI concept quite well, but it fails to mention why SIDI "spark ignition" is different from any other "spark ignition".

01-14-11, 11:05 PM
What is "Spark Ignition"? I thought all internal combustion engines had a spark ignition? Such a fancy term.

While most cars and trucks sold in the US do use "Spark Igniition", as most cars and trucks are sold with gasoline engines, not all internal combustion engines utilize a spark to ignite the fuel. Diesel motors, for example, do not have spark plugs, and utilize cylinder pressure, which causes heat, to ignite the fuel. The compression ration of most gas motors falls some where between 7:1 to 11:1, while diesels very from about 22:1 to 28:1. The reason why "SIDI" is used instead of "DI", when labeling the motor, is to prevent confusion between a Direct Injected gas motor and a Direct Injected diesel motor. While we are just now starting to see DI on gas motors, most diesel built with in the last 20 years are Direct Injected. This is just small summary, but should clear a couple things up.

~ Matt

03-06-11, 11:34 AM
In addition to the high feature 3.6L LFX V6 engine evidently planned for the 2012 SRX, I wonder if Cadillac will make available 'Tap Shift' controls (i.e. upshift & downshift buttons on back of steering wheel) as an adjunct to Driver Shift Control (DSC). Tap Shift is currently available with certain packages on the CTS. A couple of months back I test-drove a CTS Coupe with the feature and I liked it.
Word has it that a heated steering wheel will be available on the SRX for 2012, and I'm hoping that GM applies the version of (heated) steering wheel that comes with Tap Shift controls.

I'm planning on ordering a 2012 SRX Premium this spring/summer - as soon as the dealer advises they can input orders for the 2012's. :)

04-12-11, 10:29 AM
News flash from GM News (Media.GM.com)

For Release: April 12, 2011, 10 a.m. EDT

2012 Cadillac SRX Offers More Powerful 3.6L Engine
New engine delivers improved acceleration, E85 ethanol FlexFuel capability

• Bluetooth becomes standard on all models
• Heated steering wheel for luxury, performance and premium versions
• New 20-inch machined-face wheel finish

DETROIT – Cadillac will offer a new, more powerful engine for the 2012 SRX, providing buyers of the luxury crossover with improved acceleration both from a standstill and when passing.

The SRX will receive a 3.6L direct-injected V-6 engine projected to deliver 300 horsepower (224 kW) and 260 lb.-ft. (353 Nm) of torque, according to preliminary tests by Cadillac. The SRX’s current 3.0L direct-injected V-6 engine provides 265 horsepower (198 kW) and 223 lb.-ft (302 Nm) of torque. SRX models with the new engine are expected to arrive at dealerships in late summer. Pricing will be announced closer to the start of production.

Dramatically redesigned for the 2010 model year, the SRX has quickly climbed the luxury crossover ranks. SRX total U.S. sales rose 153 percent last year to 51,094, outselling the Acura MDX, Audi Q5 and Mercedes-Benz GLK350, and second only to the Lexus RX350 in sales among midsize luxury crossovers.

With the new engine, the SRX is projected to top the Lexus RX350 in horsepower and torque. Lexus rates the RX350’s 3.5L V-6 engine at 275 horsepower (205 kW) and 257 lb.-ft. (348 Nm) of torque.

“SRX is resonating with luxury buyers by offering the function of a crossover and the distinctive style of a Cadillac,” said Don Butler, vice president of Cadillac marketing. “Now, we’re raising the standards even higher by providing the SRX with enhanced performance. The new engine will make the SRX more responsive for passing on the highway, entering freeways from on-ramps and climbing hills.”

In addition to more horsepower and torque, the new engine has a wider rpm range for its maximum torque, which gives the driver more power across a wider range of speeds and driving conditions.

The new engine also is FlexFuel capable, meaning it can use either gasoline, E85 ethanol or any combination of the two. EPA fuel economy ratings have not been finalized, but Cadillac expects the SRX to provide customers with comparable real-world fuel efficiency. The current engine has an EPA rating of 18 city/25 highway mpg.

Other enhancements on the 2012 SRX include standard Bluetooth phone connectivity on all models, a heated steering wheel on the luxury, performance and premium trim levels and door lock switches on the driver and passenger door panels. The new model will continue to have door lock switches on the center console. Also for 2012, SRX will offer a new machined-face finish on the 20-inch wheels, which are standard on performance and premium trim levels.

“Every detail counts,” Butler said. “The SRX has been a phenomenal success, but at Cadillac, we’re always looking for ways to make our automobiles better.”

Popular features already offered on the SRX include a moveable cargo fence and large under-floor storage space in the rear, a liftgate that can be programmed to stop at different heights and an UltraView sunroof that covers 70 percent of the vehicle roof.

The SRX also is available in an all-wheel-drive version that incorporates an electronic limited slip rear differential. This system not only improves traction in slippery road conditions but provides side-to-side torque transfer along the rear axle to enhance control during hard cornering.

About Cadillac
Cadillac has been a leading luxury auto brand since 1902. In recent years, Cadillac has engineered a historic renaissance led by artful engineering and advanced technology. More information on Cadillac can be found at media.cadillac.com.

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Direct link to news release: http://media.gm.com/content/media/us/en/news.detail.brand_GM.html/content/Pages/news/us/en/2011/Apr/0412_srx