Showing posts with label Dynamic Stability Control. Show all posts
Showing posts with label Dynamic Stability Control. Show all posts

December 01, 2009

Thanks God! It was Peugeot 308T

Even though I knew that Peugeot 308T had a long list of safety features, I was never really impressed compare to its own outstanding handling and road-holding until I experienced myself the life savers that it had.

My first experience was while doing downhill duel with a proton Waja 1.8 around Bukit Tinggi/Berjaya Resorts. Knowing I was behind looking for an opportunity to overtake, this bugger responded even though we were approaching a slippery right-turn curve. He seemed to be an experience driver but he pushed the the Lotus Tuned Suspension Car to the limits until it over-steered with rear tyres skidded sideways [or fish-tailed] and ended in the monsoon drain. While maneuvering to avoid a collision, Peugeot 308T tyre adhesion and dynamics were also at their limits. I thought I was on a boat. At a flick of a second the ESP light started to flash and the car regained its course and negotiated in the direction it was intended.

Everybody who drives on federal roads to or from East Coast states will normally experience trailing long Q's behind slow vehicles. Driving any car with ample torque [and low kg/bhp ratio] no one is patience enough because overtaking a Q of vehicles on a straight stretch is 'a breeze'. But be careful! what if a car or two in the Q suddenly change lane and appear in front of u for the same purpose? Worse still when they make a sudden right turn? Almost everybody will involuntarily hit the brake. I had this experience with my308 too. The cars sensed an emergency braking and EBA [Emergency Braking Assist] took over by braking to the max and at the same time hazard light turned on. In the process ABS also came into play.
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Last weekend I was driving back from Kelantan in heavy rain. As usual I had a bad habit of diving the same speed whether it was raining or dry, sometimes even faster when it drizzled or rained. While I was overtaking at a gentle curve I hit a long pool of water, suddenly I felt 'jerky' as if the engine was switched OFF and ON a few times until the traction was regained. It was actually a combine effort of ASR, ESP and DSC that saved my family and my life...
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The following are the dynamic safety features that Peugeot 308T have and proven their effectiveness. I've tested involuntarily and w/o intention.

EBD - Electronic Brake Distribution
EBA - Emergency Brake Assist
ASR - Traction Control
ESP - Electronic Stability Program [watch video]
DSC - Dynamic Stability Control [watch video]
ABS - Antilock Braking System [watch video]

Almost all new cars are now equipped with ABS. But it is important to remember that ABS will not shorten stopping distance, in fact it can extend beyond that of threshold braking in a non-ABS equipped car. ABS is mainly for an emergency situation to prevent brake lock-up in order to maintain steering control to steer clear of an obstacle thus avoid collision. Do not attempt to modulate the brake - the ABS system will take care of the modulation. For cars without EBA however, to correctly use the ABS brakes in a panic situation, the driver must apply the brakes 100 percent, using all available force and steer accordingly.

Happy Motoring and always...
Berhati2 d'Jalan Raya


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April 09, 2009

myPeugeot 308 Dynamic Stability Control

Peugeot 308THP comes with Dynamic Stability Control, but what actually it does, and how is it different from ABS, EBD and traction control?
EBD1Dynamic Stability Control helps keep the car in control during a skid or slide. It uses sensors to determine when the vehicle starts to veer off its path by looking at the steering input from the driver and the actual path of the vehicle. After sensing a skid, the onboard computer can apply the ABS and EBD to one or all of the wheels to keep the car pointed in the intended direction. It may also cut engine power if the computer determines it will keep the vehicle in control. In other words the Dynamic Stability Control enhances the ABS and EBD.
brakemyPeugeot 308 has Traction Control as well. In contrast to Dynamic Stability Control, Traction Control limits wheelspin during acceleration - in a way it behaves like limited slip differential, but at an expense of loosing some bhp because the former is applying the antilock brakes reversal to the drive wheels when slip is detected. Just like stability control, it cuts engine power if driver gets spirited or overzealous with the throttle on slippery surface.

myPeugeot 308 also has EBA. EBA stands for Emergency Brake Assist. EBA technology is different from an ABS or EBD. EBA recognizes when a panic braking is applied (a quick shift from accelerator to brake pedal) and will apply additional brake pressure to help shorten the stopping distance. It may also work in conjunction Dynamic Stability Control system if it senses a potential collision.


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