Seemore of Mazda 2 / 3 / 5 / 6 / 8 / CX3 / CX5 Spare Parts Malaysia on Facebook. Log In. orFeatures Wheels delves into the tricky tech behind Mazda's software-based torque-vectoring system 13 Aug 2017, 0900 am Mazda's unique G-Vectoring Control system was first had in the facelifted Mazda 3, and will soon find its way to all SkyActiv the idea was on the backburner for eight years until engine technology caught up, Wheels has delved into the tricky tech to bring to you, this plain and simple IS IT?Mazda’s interpretation of torque vectoring is a pure software-based function, albeit with very real physical effects, so given a box full of tools and a Mazda 3, you won’t find the G-Vectoring widget, no matter how many parts you is an advanced program fed into the vehicle’s various electronic systems including engine management and ESC approach does not rely on individual wheel braking to vector’ torque, as do many other manufacturers’ systems, instead aiming for a more subtle and efficient DOES IT MATTER?According to its maker, GVC is as much about comfort as it is about dynamics. Not only do occupants feel less of the effects of changes in direction for a more relaxing ride, but more precise steering allows easier positioning of the vehicle, which benefits driving enjoyment and performance characteristics. The system is rapidly proliferating the Mazda range and will soon be rolled out to all SkyActiv DOES IT WORK?Each time the driver turns the steering wheel even a small amount the GVC momentarily reduces the torque output of the engine by rapidly altering the amount of injected fuel. The slight power reduction causes an imperceptible deceleration of the vehicle usually at or below which loads the outside wheel with an extra 5kg of may all sound like insignificant figures, but Mazda says the effect is sufficient to improve the turn-in of the loaded wheel, while not enough to be consciously noticed by occupants including the result is more effective steering with fewer corrections to maintain a continuous course, particularly on slippery BURNMazda incubated the G-Vectoring principle for eight years until the latest SkyActiv engine technology allowed a fast enough fuel-injection response for the idea to take off. The first vehicle to be upgraded with GVC was the Mazda 3 when it was treated to a mild facelift earlier this year. COMMENTS
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Let’s face it The current automotive climate breeds lazy drivers see automatic cruise control, lane-keeping assist, and the decreasing availability of manual transmissions. So it seems incumbent upon us to celebrate genuine advancements that improve a driver’s ability to actually control a car with one’s own appendages, whether going fast on a racetrack or taking the family to the beach. There’s an interesting new one over at Mazda, where the driving forecast is brand from Hiroshima ranks remarkably high on the overall fun-to-drive scale, especially considering its size and resources. The Mazda 3 and the MX-5 Miata reside on the current 10Best Cars list and the Mazda 6 is a previous winner. The company’s SUVs drive like cars, and its interiors deliver visual punch a weight-class above their prices. In short, Mazda cares about making cars that people actually find enjoyable to drive themselves, which is why we flew to Mazda Raceway Laguna Seca, outside of Monterey, California, to go around the track at a mere 30 mph. Mazda wouldn’t even tell us what G-Vectoring Control GVC, the technology it planned to showcase, actually was before letting us sample it in the 2017-spec Mazda day started with laps of an impromptu oval in the parking lot at a blistering 20 mph. An engineer would switch the GVC on and off from the passenger seat. At first, GVC just feels as if it makes the steering a little heftier. But after a few of these cruise-controlled laps while hugging a line of pylons, we realized that turn-in is smoother and rarely did we have to correct our driving we were still in the dark about what GVC actually does. Given the name, you might expect it to be some kind of torque vectoring, or steering the car by controlling differential torque delivery between the inside and outside wheels in a corner, which is analogous to how tanks turn. But that’s not what GVC is doing. Mazda finally explained that the important part of GVC is the G, or as you see it frequently, g. By closely monitoring the speed of the driver’s steering-wheel inputs, GVC tells the engine to ever-so-slightly reduce torque. This produces an imperceptible deceleration, only g in the most extreme cases. By way of comparison, lifting off the throttle in a typical car results in about g of deceleration. The tiny change generates a small shift in load to the front axle, which tightens everything in the front suspension and steering system, removing compliance in bushings and dampers and resulting in improved steering response. It is remarkable how such a tiny influence can contribute such a dramatic change. Engineers hesitate to quote a lb-ft figure, but they did confirm that GVC reduces engine torque by a single-digit percentage, usually by retarding the timing. At a steady 20 or 30 mph, the 6’s might be putting out 20 lb-ft, so even 9 percent would be less than 2 lb-ft whole project was eight years in the making and it developed out of an extensive study of how humans move and how, when controlling cars, drivers make similar movements and react to g forces. After proving the concept with an EV—used because electric motors allow ultra-fine control of incremental torque delivery—Mazda had to wait for its range of Skyactiv engines to reach the mainstream before developing the technology for production cars. Mazda’s newest engines have granular and rapidly responsive control over torque output. Creating the slight deceleration is one thing, but getting it to happen in a small amount of time— seconds—so that the driver and passengers wouldn’t notice, is the real key to making GVC appear seamless to GVC mimics techniques, like “breathing” the throttle or left-foot braking into a corner, that race and rally drivers use to generate more front-wheel grip and get their competition cars to turn, only it’s extremely subtle, never felt or obvious. While going fast is always a hoot, GVC is more of a comfort- and confidence-builder than anything else. It will not improve skidpad grip or shave seconds off of any driver’s fastest lap explaining what GVC does, Mazda had us lap Mazda Raceway at 30 mph, hugging the inside edge of one corner to stay on the same line while an engineer in the passenger seat switched the GVC system on and off, as we’d been doing before on the parking lot oval. From the driver’s seat, there are fewer corrections needed, particularly when making quick changes in direction, when a driver might otherwise crank in too much steering angle. With GVC at work, you’re less likely to overshoot your steering input because there’s less delay caused by the previously mentioned compliance that’s designed into the front suspension and steering. That compliance is there to improve ride quality and reduce noise racers often replace the bushings and mounts with stiffer elements to improve responsiveness, trading away comfort in the process. From the passenger seat of a Mazda 6 with GVC, we clearly could see other drivers making fewer small steering corrections. This limits head toss and torso movements significantly for all occupants. Fewer corrections also reduce driver fatigue, again, improving also simulated a narrow-lane construction zone using tall cones and Jersey barriers on Mazda Raceway’s front straight. Many drivers never notice it, but going dead straight requires that they make a lot of little steering corrections. With GVC turned on, these corrections become less extreme and fewer in number, again reducing driver really difficult part for Mazda is conveying this information to the car-buying public. The finer points of how GVC works will be lost on most customers, which is not really a problem in itself. All they need to understand is that GVC improves an already class-leading steering system, making for a better-driving car. GVC comes standard on both the 2017 Mazda 3 and 6, and we expect to see it proliferate across the rest of the Mazda lineup within a few years. The Mazda MX-5 Miata is one model that may never get GVC because its suspension has less compliance and a lot of anti-lift baked into its geometry. But we have no doubt that Mazda will find other ways to make that car even more fun to drive in the coming Colwell is Car and Driver's executive editor, who covers new cars and technology with a keen eye for automotive nonsense and with what he considers to be great car sense, which is a humblebrag. On his first day at C/D in 2004, he was given the keys to a Porsche 911 by someone who didn't even know if he had a driver's license. He also is one of the drivers who set fast laps at C/D's annual Lightning Lap track test.
Mulaidari teknologi berkendara G-Vectoring Control plus (GVC Plus), Captain Seat dengan Center Console, audio premium BOSE, Mazda Connect serta Wireless Smartphone Integration. Sementara itu, New Mazda 2 Sedan dibekali mesin Skyactiv- G 1.5 dengan Performa mesin ini dapat mencapai Max. power: 82kW (111PS)/6,000rpm dengan Max. torque: An ingenious new Mazda technology called G-Vectoring Control emulates race-car driver weight-transfer techniques to make road-going cars driven by mere mortals handle better and make passengers feel more comfortable. Every time the driver turns the steering wheel, GVC shifts a tiny amount of weight to the outside front tire, which improves grip and steering response. The result is less sawing at the steering wheel to find the right path through a turn, or less effort to keep the car pointed straight on the highway. G-Vectoring Control is not just another over-hyped modest performance tweak. Mazda appears to have developed a significant electronic driver enhancer. The driver and passengers will subconsciously believe the car handles better it actually does and the driver is a better driver possibly. It is a significant step forward for Mazda in making mid-price cars and crossovers carve corners like high-end German sport sedans and maintain arrow-straight stability on long, straight highways. Mazda G-Vectoring Control debuts on 2017 Mazda 6 and Mazda 3, with the rest of the line to follow over the next couple years. How it works instantaneous change to ignition timing When a car slows or brakes, the weight shifts forward. That's physics. The weight transfer puts weight on the front wheels, so they grip better and turn in a little more. Race drivers are taught to brake just a little heading into a turn to initiate the weight transfer. Mazda GVC automates the process. As soon as the driver turns the wheel, Mazda's SkyActiv engine management system - which includes the GVC algorithms as part of what Mazda calls SkyActiv Vehicle Dynamics - retards the ignition timing ever so slightly, engine torque power falls slightly, the car slows ever so slightly, and a small amount of weight transfers to the outside front wheel such as the right front wheel if the steering wheel is turned to the left, as in the illustration above. All this takes place in less than 50 milliseconds one-twentieth of a second from steering wheel input to torque reduction, so it's effectively instantaneous. A Formula 1 race driver couldn't do all that in 50 ms. The change in speed is so slight, to Mazda says, that "deceleration is not consciously detectable by the driver." The amount of weight transfer is at most 10 pounds, but it's enough. Mazda found that using the brakes to slow the outer front wheel took too long and was imprecise too much or too little braking, as did slowing the engine in other ways, such as reducing fuel flow. [video width="640" height="360" mp4=" How it feels behind the wheel Mazda set up a series of demonstrations in Monterey, CA, at the Mazda Laguna Seca Raceway using a set of instrumented Mazda 6 sedans outfitted with an on/off button for GVC, and a laptop-equipped backseat technician that videotaped and recorded steering wheel input for back-to-back laps with GVC on, then off. The A-B testing included a emergency lane change slalom, an oval, a water-soaked high speed turn, and a narrow lane set off by cones on one side and the famous racetrack's unforgiving concrete wall protecting pit road. The video above shows a 30-second oval driven at the same moderate speed with G-Vectoring Control on and off. Notice the more frequent micro-corrections of the wheel with GVC off. With GVC disabled, the driver is likely to turn in too much or too little, over-correct, correct for the over-correction, and so forth. Those more frequent sawing motions at the wheel are on the right video. The line chart shows the greater smoothness with GVC enabled blue line, especially the first half of the lap. Where the blue line diverges in the middle, I swung wide to set up for the second turn, a no-no; drivers were supposed to hug the inside of the course all the way around, each lap. On the oval the most notable difference was how little steering input corrections I had to make going around the turns. On the long narrow lane on the track's main straight, the difference was how stable and centered the car seemed, almost as if the lane was a couple feet wider. On the highway, that should translate to a car that seems to go where you want it to straight ahead with fewer corrections. [metaslider id=230844] Back story equilibrioception and minimum jerk theory Mazda has been working on GVC for eight years, much of it in conjunction with Hitachi, according to Mazda vehicle development engineer Dave Coleman. That included deep-dive research into how drivers and passengers react to the forces of motion. One topic of study was equilibrioception, or how people maintain and lose their sense of balance. People walking or running like to keep their heads straight upright the brain corrects for normal head bobbing, and doing that serves as the body's internal G-sensor. See the YouTube video Chicken Head Tracking below for proof that other parts of the animal kingdom want to keep their heads straight up, too. The minimum jerk theory was also studied and, no, it has nothing to do with who's likely to win Election 2016. Basically, human motion includes jerky motion that we try to smooth out as much as possible. Driver and passenger are upset by jerky motion, which Mazda says is not velocity going a steady 60 mph even though the roadside looking out may be a blur, nor is it the delta change in velocity, which is described as acceleration. Rather, "jerk" is the change in acceleration, and it shows itself in repeated sharp little steering wheel adjustments, or pressing softer then harder on the brakes, or pressing more then less on the throttle. With a turbocharged car, when you tromp the throttle, the car moves off and the jerk moment comes a fraction of a second later when the turbo boost finally takes effect. Jerk motion is unsettling. Turning into a corner involves at least a small jerk, and each time the driver corrects again, there's another jerk. With GVC, there are fewer mid-turn corrections. G-Vectoring Control vs. torque vectoring Mazda says G-Vectoring is not the same as torque vectoring. Torque vectoring is a mechanical or brake-induced action to over-drive the outer powered wheel going around a corner, effectively powering the car through the turn. Mechanical torque vectoring can add 100 pounds or more or weight to the car not to the driven outer wheel. Brake-controlled torque vectoring brakes the inside wheel, effectively overpowering the outer wheel in comparison. According to Mazda chart above, G-Vectoring Control has the advantage of working in more situations than torque vectoring, most of all in everyday conditions where it makes the car seem more stable and on-course. Why G-Vectoring Control matters Mazda is an engineering-driven company that sees itself the equal of Toyota or Honda, albeit with one-fifth the sales. To close the sales gap with them and at the same time try to be thought of as a mid-priced BMW competitor, Mazda does intriguing things with software to make its cars drive better and react more quickly than even the most skilled driver can. Thus, G-Vectoring Control. Before GVC happened, Mazda tuned its i-Activ all-wheel-drive system for what it believes is best-in-class winter driving, employing several dozen sensors to capture and respond to wheel-slip before even the driver notices it, again in a few milliseconds. In a series of tests in mountainous Colorado at the Mazda Ice Academy photo inset, the Mazda CX-5 conquered hills and slippery slaloms better than competing SUVs. Admittedly, on courses Mazda designed. Based on a day of driving several Mazda cars at Laguna Seca, Mazda makes a strong case that GVC is a feature you'll want to have. It's one more part of Mazda's pursuit of Jinba Ittai, a Japanese phrase that roughly translates to "horse and rider as one," "oneness between car and driver," or the car as an extension of the driver's desires. When can you buy GVC? Mazda says G-Vectoring Control will first be available on the 2017 midsize Mazda 6 sedan and the compact Mazda 3. Mazda will outfit the entire line within "a couple years." It's not possible to retrofit current Mazdas. While it's a software enhancement to the Mazda SkyActiv engine control module, there are also subtle tweaks to the suspension and steering. GVC will eventually be on all Mazdas, standard, and unlike the test cars, they'll be always on no off button. An interesting possibility is what happens if other automakers want GVC to use on their cars. So far, Mazda hasn't said if it would license GVC or a variant. There have been times in the past when one company had a technology everyone else wanted, such as Mitsubishi's counter-rotating balancer shafts that reduced the vibration inherent in four-cylinder engines. [embed width="640" height="360"] Tagged In Torque Vectoring Mazda Car Software Mazda6 Car Technology More from Cars o12xEDj.mazda 2 g vectoring
