Re: Green up: Automotive solutions designed faster, smarter

Embedded Computing focuses on the controllers or computers that are inside our everyday gadgets.   In this article: Green up: Automotive solutions designed faster, smarter – By Don Dingee they discuss GM’s use of simulation tools to cut the development time of their current production two-mode hybrid systems:

It was imperative for GM to get the Two-Mode Hybrid power train into production quickly, and to do that, they turned to math and simulation-based tools from The MathWorks. Using Model-Based Design, GM designed the power train prototype within 9 months, shaving 24 months off the expected development time. The complex control system is currently in production in the GMC Sierra Hybrid, GMC Yukon Hybrid, Chevy Tahoe Hybrid, Chevy Silverado Hybrid, and Cadillac Escalade Hybrid vehicles.

Not everyone appreciates that the GM two-mode hybrids are seriously excellent engineering.  This also documents that GM is becoming more agile as they go — but that it is not just something that started this year.  Still lots more room for improvement, but GM and Cadillac have been on an arc of improved design and engineering for the last 2 decades.

Mobil 1 selected as the factory fill for Cadillac Escalade Hybrid

Cadillac Escalade Hybrid is First-ever, Full-size Luxury SUV to Feature Hybrid Powertrain Technology

  • Mobil 1 also has been chosen as the factory- and service-fill endorsed motor oil for the re-designed high-performance Cadillac CTS-V.
  • As the world’s leading synthetic motor oil brand, Mobil 1 delivers exceptional engine protection and performance for a range of engine designs and applications.
  • Mobil 1 is selected by Cadillac for a broad range of its vehicles, from its first full-size hybrid SUV to the supercharged, high performance CTS-V.

Cadillac Escalade Hybrid

Cadillac Escalade Hybrid

FAIRFAX, Va.–(BUSINESS WIRE)–ExxonMobil today announced that Mobil 1, the world’s leading fully synthetic motor oil brand, has been selected as the factory- and service-fill endorsed motor oil for the 2009 Cadillac Escalade Hybrid, the first-ever, full-size luxury sports utility vehicle to feature hybrid powertrain technology.

Powered by GM’s innovative Two-Mode Hybrid Engine Technology™, which seamlessly blends power from two electric motors using a 300V battery pack with a combustion engine, the Cadillac Escalade Hybrid delivers a 50-percent city fuel economy improvement compared to previous versions of the popular vehicle. The Cadillac Escalade Hybrid was launched in September 2008 and is now available at Cadillac dealerships in the U.S., Canada and China.

In addition, Mobil 1 has also been selected as the factory- and service-fill endorsed motor oil for the redesigned Cadillac CTS-V, which was launched in November 2008. Part of Cadillac’s acclaimed V-Series of high-performance vehicles, the 2009 CTS-V features a 6.2 liter supercharged V8 engine that produces 556 horsepower (410 kW) and 550 lb.-ft.(745 Nm) of torque, making it one of the fastest V8 production sedans in the world.

“The 2009 Cadillac Escalade Hybrid exemplifies our commitment to delivering vehicles that combine cutting-edge technological innovation with the style, performance and luxury that have long been the hallmark of Cadillac,” said John Howell, global product director, Cadillac. “With its history of technical excellence and ability to deliver exceptional engine protection for all types of vehicles, Mobil 1 synthetic motor oil was an obvious choice to be the factory-fill and service-fill motor oil across our range of vehicles, including the Cadillac Escalade Hybrid as well as our redesigned CTS-V.”

In extensive laboratory and on-highway testing, the new Cadillac Escalade Hybrid delivered a best-in-class fuel economy rating with an EPA-estimated 20 miles-per-gallon in city driving and 21-miles-per gallon for on-highway use. Beyond its fuel economy benefits, the Cadillac Escalade Hybrid is equipped with a 332-horsepower V8 engine that generates 367 lb-ft of torque at 4,100 rpm, and is capable of towing more than 5,500 pounds.

“For many years, our Mobil 1 technical experts have collaborated with Cadillac and GM engineers to help advance engine technology and ensure that Mobil 1 always meets or exceeds the high performance benchmarks for which Cadillac vehicles are recognized,” said Lawrence Kearns, global automotive marketing manager, ExxonMobil Lubricants & Petroleum Specialties Company. “We are proud to have Mobil 1 selected as the factory- and service-fill motor oil for the new Cadillac 2009 Escalade Hybrid and the 2009 CTS-V, and to recognize the accomplishments of Cadillac and GM engineers for their development of the world’s first, full-size sports utility vehicle to incorporate hybrid engine technology.”

Chosen by more original equipment manufacturers than any other oil brand, Mobil 1 is the world’s leading fully synthetic motor oil brand. Additional information about Mobil 1 and other ExxonMobil lubricants can be found at

2009 Cadillac Escalade Hybrid Platinum, for when you want more with less

2009 Cadillac Escalade Platinum Hybrid Offers Unprecedented Combination Of Efficiency, Technology And Luxury In A Large SUV

Cadillac Escalade

Cadillac Escalade

DETROIT – Cadillac has launched the 2009 Escalade Platinum Hybrid, the most technically advanced large luxury SUV yet, blending the exclusive features of the Platinum model with the fuel-saving powertrain of the Escalade Hybrid. It delivers 20 mpg in city driving – a 50-percent city mileage improvement over non-hybrid models.

“This is the ultimate Escalade, combining the luxury features of the Platinum with the world’s first hybrid on a large luxury SUV,” said Mark McNabb, North America vice president, Cadillac/Premium Channel. “Along with the upcoming CTS Sport Wagon and SRX crossover, the Escalade Platinum Hybrid represents an opportunity for the changing priorities of luxury consumers who want dramatic design and technology combined with fuel efficiency and functionality.”

The Escalade’s two-mode hybrid system allows it to return exceptional fuel economy, while delivering the capabilities of a true luxury SUV. The limited-edition Escalade Platinum model includes other advanced technologies, such as light-emitting diode (LED) headlamps and Cadillac’s advanced Magnetic Ride Control system.

Escalade Platinum Hybrid is available in 2WD and 4WD configurations. It delivers up to 5,800 pounds (2,631 kg) of usable towing capacity on 2WD models and 5,600 pounds (2,540 kg) on 4WD models.

GM’s patented two-mode hybrid technology

GM’s patented two-mode hybrid system consists of an advanced electrically variable transmission (EVT) and 300-volt nickel-metal hydride Energy Storage System (ESS). These systems work in concert with the standard 6.0L V-8 Gen IV gasoline engine with Active Fuel Management (AFM) and late-intake valve closing (LIVC) technology.

The key to Escalade’s two-mode hybrid system is that the electric power used to propel the vehicle is generated by the hybrid system itself. When the brakes are applied or the vehicle is coasting, the electric motors within the hybrid system create electricity that is stored in the 300-volt battery. This stored energy is used to move the vehicle and the regenerative braking cycle is renewed.

Providing power to the hybrid’s electrically variable transmission’s (EVT) two electric motors is a 300-volt nickel-metal hydride Energy Storage System (ESS). This battery pack is located under the second-row seat, where it takes up virtually no additional space and does not interfere with second- or third-row ingress/egress.

Additional features of the hybrid powertrain and supporting systems include:

* Fully blended regenerative braking to capture energy that would otherwise be lost during vehicle deceleration
* A 6.0L V-8 engine with Active Fuel Management and late intake valve closing (Atkinson-cycle combustion process) for reduced pumping losses and better overall fuel economy. It is rated at 332 horsepower (248 kW) and 367 lb.-ft. of torque (498 Nm) and runs on regular unleaded fuel
* Auto Stop mode. Once the vehicle reaches 0 mph, the gasoline engine automatically shuts down, leaving the engine off and allowing the vehicle to move only under electric power, such as during city driving or heavy stop-and-go traffic
* An exhaust system and resonator specially tuned for the 6.0L LIVC engine’s Active Fuel Management operation. It ensures comfortable interior acoustics and a pleasant exhaust note during both V-4 and V-8 operation
* An electrically driven, 300-volt air conditioning compressor reduces vibration and allows the HVAC system to cool the passenger compartment even when the gasoline engine is shut off. It includes the standard tri-zone climate system
* An electrically driven, 42-volt variable-assist power steering system reduces vibration and provides up to a 0.5-mpg fuel economy improvement by reducing parasitic losses common in belt-driven hydraulic systems
* The Energy Storage System cooling system’s internal fan is tuned to be quiet at low vehicle speeds, when the fan could more easily be heard by the occupants

The Escalade Platinum Hybrid’s battery pack durability and reliability are maintained via optimized charge and discharge cycles, as well as a dedicated cooling system that draws air from the passenger compartment. As part of the vehicle’s emission control system, the energy storage system is warranted for eight years/100,000 miles.

Exclusive package of luxury, style and technology

In the new Escalade Platinum Hybrid, the hybrid system’s efficiency is complemented by an exclusive package of luxury, style and technology, including:

* A distinctive front fascia and grille patterned after Cadillac’s acclaimed CTS sport sedan
* Unique 22-inch wheels
* Magnetic Ride Control technology
* LED headlamps
* Exclusive interior appointments with Aniline leather
* DVD entertainment system with screens integrated in front-seat headrests

Magnetic Ride Control is the world’s fastest-reacting suspension system and gives the Escalade Platinum more precise body motion control. It is a real-time damping system – “reading” the road in 1-millisecond intervals – that replaces conventional mechanical-valve shocks with electronically controlled shocks filled with a synthetic fluid containing minute iron particles. Under the presence of magnetic charge, the iron particles align to provide damping resistance almost instantly.

The LED headlamps emulate the characteristics of natural daylight much more closely than traditional auto lighting. LEDs are environmentally friendly, with a usable life more than 20 times longer than traditional halogen bulbs.

Inside the Escalade Platinum is the latest example of Cadillac’s 21st-century return to handcrafted luxury details. The instrument panel, center storage console and door trim are wrapped and stitched by hand. They feature decorative French seams that convey an elegantly tailored look and feel. Materials include rich leather on the instrument panel, with unique wood inlays and aluminum trim.

Aniline leather is unique to the Escalade Platinum and is used to trim the first- and second-row seats. Contrasting-color stitching is used on the French seams for a distinctive, luxurious appearance and the seatbacks feature embroidered Cadillac wreath and crest insignias. The leather-covered seats are comfortable and convenient, with the industry-exclusive power fold-and-tumble second-row seat feature that eases access to the third-row seat.

Additional standard interior features include Platinum-specific door sills and floor mats; a heated steering wheel; and heated and cooled cupholders and a power liftgate that opens and closes with the touch of a button. Also, the DVD entertainment system adds screens integrated into each front-seat headrest, in addition to the existing roof-mounted screen.

Each front-row headrest screen has its own driver and input controls. The headrest units can be operated independently or in tandem. This system enables passengers in different seats to watch or listen to different entertainment choices. Also including is the acclaimed Bose 5.1 Digital Surround system, as well as the eight-inch touch screen for DVD-based navigation and control of the DVD, CD, MP3 and XM Satellite Radio entertainment.

Evolving Cadillac fleet of luxury, fuel efficiency and functionality

The Escalade Platinum Hybrid joins an evolving fleet of Cadillacs that is focused on fuel efficiency and functionality, combined with dramatic design and advanced technology. Cadillac will launch the all-new SRX crossover this summer, with high levels of functionality and a 3.0L direct injected V-6 engine that delivers more horsepower and a 10-15-percent fuel economy improvement over the 3.6L engine it replaces. The CTS Sport Wagon will also launch this summer, with the same, fuel-efficient engine, as well as greater functionality than has ever been delivered by Cadillac’s core nameplate.