on 2040-cars

Auto blog

Here's how Cadillac made its Magnetic Ride Control suspension quicker and smarter

Bugatti makes the world's fastest car, but Cadillac claims it has developed the world's fastest suspension. Its fourth-generation Magnetic Ride Control technology receives hardware and software tweaks to deliver a more comfortable ride and sharper handling. It's offered on some variants of the CT4, CT5 and the Escalade. Introduced in 2002 on the Seville STS, this self-adjusting suspension is not as complicated as it might sound. It relies primarily on electromagnets that emit a magnetic field, and a magnetorheological fluid whose viscosity changes depending on the strength of the magnetic force. Sensors scan the road up to 1,000 times per second and send the information they gather to the electromagnets, which then alter their magnetic field as needed to modify the fluid's viscosity. The fluid is in the shocks, so making it thicker returns a firmer ride, and vice versa. In simpler terms, Magnetic Ride Control leverages chemistry and physics to make the ride sporty, comfortable, or somewhere in between -- all in the blink of an eye. By reacting to the changing magnetic field, the fluid-filled shocks filter out road imperfections and maximize tire contact with the road to deliver more precise handling. Cadillac began developing the fourth-generation system by improving the hardware. The in-wheel accelerometers are more accurate than before, the inertial measurement unit is more precise, and the damper fluid formula was changed for quicker response times and a smoother ride. Engineers then turned their attention to the system's software. They notably gave the sensors the ability to process a wider selection of input and output signals, which translates to a wider spread between comfort and sport. And, they made the response time up to 45-percent quicker. All told, the fourth-generation Magnetic Ride Control technology performs better under heavy braking and hard cornering, it delivers more consistent performance, and it reads the road more accurately. Cadillac proudly notes these are the most comprehensive updates it has made to the system in nearly two decades. Magnetic Ride Control comes standard on the 2021 CT4-V and the 2021 CT5-V, and it's bundled into the CT5's V Performance package, which also includes a mechanical limited-slip differential. It's also standard on the Sport and Platinum variants of the 2021 Escalade, and it's part of the Premium Luxury trim's Performance package.

Cadillac CT6 will get high-res streaming video rearview mirror

Cadillac is preparing a big upgrade to the humble rearview mirror, adding a streaming video function that it claims will improve a driver's field of vision by 300 percent. The new system will debut on the 2016 CT6 flagship. The streaming system, which eliminates the visual obstructions caused by passengers, headrests and the rear pillars, relies on a 1280-by-240-pixel TFT display and a high-definition camera to reduce glare and improve visibility in low-light conditions. That camera even addresses one of the big annoyances of today's camera systems, by adding a hydrophobic coating to keep the camera lens clear. The system can easily be switched off at the press of a button, at which point the driver has a simple electrochromatic mirror at his disposal. "The closest comparison to this kind of rear vision would be driving a convertible with the top down," Travis Hester, the CT6's executive chief engineer said in a statement. "The streaming video is a significant enhancement for the luxury customer interested in purposeful technology." Scroll down for the press release from Cadillac. Cadillac Adds Streaming Video to Enhance Driver Vision and Safety Display eliminates visual obstructions, increases rearward vision by 300 percent 2014-12-18 DETROIT – Cadillac late next year will add high-resolution streaming video to the function of a traditional rearview mirror, removing obstructions of passengers, headrests and the vehicle's roof and rear pillars. The streaming video mirror improves field of vision by an estimated 300 percent, or roughly four times greater than a standard rearview mirror. "The closest comparison to this kind of rear vision would be driving a convertible with the top down," said Travis Hester, Cadillac CT6 executive chief engineer. "In addition to the increased field of view, the technology eliminates any rear seat, rear pillar or passenger obstructions, allowing the driver an unimpeded view of the lanes behind and traditional blind-spots," Hester said. Thanks to a high dynamic range, the camera's video feed reduces glare and allows a crisper image in low-light situations, versus a traditional glass electrochromatic, or auto-dimming, rearview mirror. The in-mirror display is an industry-leading 1280 by 240-pixel TFT-LCD display with 171 pixels per inch, combined with a HD camera designed specifically to enhance rear view lane width and maximize low-light situations.

Roll pins in recalled 2014-2015 Cadillac CTS V-Sports could crack

General Motors has issued a recall for select 2014-2015 Cadillac CTS V-Sport sedans due to roll pins in the rear differential that could crack. The recall only affects 2,866 vehicles, but it is expected that 100% of those vehicles have the defective parts. According to NHTSA Campaign No. 20V038000, 2014-2015 CTS V-Sports built between July 1, 2013 and May 15, 2015 have roll pins in the rear-axle differential that could "fatigue" and "fracture." If these pins were to break while the vehicle is in motion, it could cause the rear to lock up, which might create a potentially dangerous driving situation. In September 2019, a GM engineer noticed a forum discussion about the problem with the V-Sports, which can be easily identified by their twin-turbo 3.6-liter V6 engines. Because he had dealt with similar issues with his own personal vehicle, he submitted a report, and an investigation was opened the next month. To make good with its customers, GM has promised to replace the rear differentials on all affected vehicles. The recall report says the roll pins in the replacement parts will have "increased strength" and a double-shear design rather than the original single-shear design.  GM plans to send customers recall identification notices starting March 9, 2020.