Porsche Stability Management (PSM), which provides a high level of active driving safety at longitudinal and lateral limitations, is at the core of the active driving dynamics control systems. The PSM includes the ABS (anti-lock brake system), ASR (anti-slip regulation), MSR (engine drag torque control), ABD (automatic brake differential), “precharging of the brake system,” and “brake assist” features. Precharging the brake system improves braking readiness, which in turn shortens emergency stopping distances. The PSM hydraulic unit transfers braking fluid to the wheel brakes before the brake pedal is depressed if the accelerator pedal is swiftly depressed, as is frequently the case before an emergency stop. This ensures that the brake system is perfectly ready for the impending braking by causing the brake pads to lightly press against the brake discs. As a result, stopping distances are shortened and the response behavior of the brake system is greatly improved.
PSM has two stages for turning off. The system features an individually switchable mode with the name PSM Sport in conjunction with the Sport Chrono Package. This mode is accessed by pressing the PSM button in the center console. “PSM Sport” is substantially different from the default mode in terms of functionality and enables ambitious drivers to push their Porsche to its absolute limits, for instance on a racetrack. The function permits noticeably larger yaw movements around the vertical axis and a greater amount of slip on the drive wheels than “PSM On,” enhancing the vehicle’s dynamic performance. This eliminates the need for even seasoned sporty drivers to completely deactivate the PSM. Pressing and holding the PSM button initiates the “PSM Off” mode. This is in line with the Porsche philosophy that permits users to completely turn off the control system at any time. Strong braking in the ABS control range, however, reactivates the entire stabilizing effect of the PSM system in “PSM Off” and “PSM Sport” mode, but only until the brake is lifted once again.
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Information technology: Porsche Stability Management
When the 996 Carrera 4 was unveiled in 1998, Porsche debuted PSM, an electronic stability control system designed to keep your 911 moving in the right direction even when you veered off course.
PSM has been constantly improving since it was made a widely accepted standard feature in 2003, leading to the system we now use in the most recent 991s.
PSM, which is used to refer to a variety of electrical controls that all work together to provide optimal stability, is essentially an umbrella word for multiple systems. Numerous sensors are being watched, and the ABS sensors are used to measure wheel speed.
In order for the PSM system to determine the true direction of movement at all times, measurements of the engine speed, throttle position, lateral acceleration, yaw (the car rotating around a central axis), and steering wheel position are also taken.
If the automobile begins to understeer or oversteer, the PSM system can take preventative action based on this data. The PSM light will begin to flash and the inside rear wheel will automatically apply the brakes to help the car turn tighter if the front end begins to slide.
In contrast, the outside front wheel is selectively braked to offer rear end stability if the back ends steps out. The PSM threshold is raised in Sport Plus mode, enabling a larger slip angle to be attained.
In order to increase traction, PSM additionally uses an Automatic Brake Differential (ABD). If traction is lost, this brakes the rotating wheel and transfers power to the wheel that has higher traction.
Another method of controlling traction is to use a normal traction control system, which temporarily reduces power output by delaying the engine’s starting. For the purpose of preserving stability, the PSM system on PDK vehicles can also affect gear shifts.
The PSM system also controls the ABS system, which is active even when PSM is switched off via the button on the center console (as does the ABD).
If the PSM controls are switched off and one of the front wheels needs ABS assistance, they will automatically re-engage (in Sport Plus mode, both front wheels require ABS assistance before PSM is re-engaged). By doing this, you may be sure that the PSM will be ready to keep you out of trouble even while you’re driving recklessly.
The best approach to brush up on Porsche’s increasingly sophisticated engineering is to use our online “technology explained” features. Go here to read them all.
Controlling instability
Reaching the limit safely and confidently: The brand-new Sport mode in Porsche Stability Management enables aspirational Porsche drivers to push the boundaries of vehicle control to the absolute maximum level of driving enjoyment.
The red 911 Turbo S accelerates ferociously as it approaches the left-hand turn. The ceramic brakes don’t engage until the very last second, giving it a strong deceleration. Experienced 911 race car drivers would recognize that the steering urge is harsh, bordering on merciless, and that this is a good thing gone too far. Except for Porsche Stability Management, nothing prevents the vehicle’s rear end from fishtailing at the moment (PSM). That is, normally. However, the new PSM Sport mode doesn’t do anything really novel. However, the car’s back does not turn out. Instead, the all-wheel sports car with 580 horsepower (911 Turbo S: Combined fuel consumption*: 9.1 l/100 km, Combined CO2-Emission*: 212 g/km) appears to dance into safe, controlled oversteering. To Vanina Ickx and Philipp Peglau’s delight, the maneuver appears to be completely controllable and swift.
Ickx has complete control of the potent 911. The diminutive Belgian native is a legend behind the wheel. Her skill runs in the family, as evidenced by the fact that Jacky Ickx, the father of Vanina Ickx, won eight Grands Prix during his Formula One career. In relation to the 24 Hours of Le Mans, where he won the overall championship six times, four of them in a Porsche, his name is even more revered. Vanina, his daughter, has competed in Le Mans seven times in both a 911 GT3 RS and several thoroughbred prototypes. She also competed in the German Touring Car Masters for two years as a factory driver (DTM).
What Does the ABS/PSM Light on a Porsche Mean?
When the Anti-lock Brake System notices a fault with the wheel speed sensors or the ABS module, the Porsche ABS light can continue to illuminate.
Other systems, such traction control, will be deactivated once the Porsche ABS stops working because these systems depend on the ABS to work.
Drive with caution if the Porsche ABS or PSM warning light is constantly on. Remember that the car can be harder to stop and is more prone to skid when you apply the brakes.
Stop right away if the ABS and the red BRAKE light with an exclamation point are still illuminated. Check the brake fluid level and make any necessary corrections. Driving with the BRAKE light on is not advised.
Does Porsche PSM resemble PASM?
The Porsche Active Suspension Management system (PASM) is an electronic active damping system that is standard on the most potent variants of Porsche’s current Boxster, Cayman, Macan, and Cayenne models but available as an optional extra on all of the lesser-powered vehicles. Additionally, the system is a standard feature on all 911 and Panamera models.
Porsche PSM (Porsche Stability Management), a stability control system that attempts to improve traction while reducing understeer and oversteer, should not be confused with Porsche PASM.
The PASM system includes a special collection of fluid-filled dampers, each of which is equipped with a valve that can be used to restrict the flow of oil inside the component, changing how stiff the suspension of the vehicle is. The driver can choose between two damper settings using a button located on the center console of the vehicle.
The damper valve is left open in Normal mode, allowing fluid to flow freely. According to Porsche, this environment combines performance and comfort. By closing the damper valve and limiting the flow of oil, sport mode produces a stiffer ride that, in Porsche’s opinion, improves handling.
Sports vehicles like the 718 Cayman and Boxster come with PASM, which lowers the ride height by 10mm. The technology can also be used in conjunction with Porsche’s air suspension system, which is installed in the Macan and Cayenne, to provide a ride height that is adjustable in six steps.
Porsche’s Active Suspension Management system, when available as an option, is priced in accordance with the model for which it is specified. It costs roughly PS1,000 for the 718 Boxster and Cayman; the Cayenne has a similar price point, but the Macan offers it for about PS800. For about PS1,900 on the Macan and PS2,600 on the Cayenne, the system on the two Porsche SUVs can also be specified with air suspension.
We’ve driven examples of every Porsche model that has PASM installed, and the feature actually alters how the cars drive noticeably. Depending on the specific model, Sport mode substantially improves the already remarkable body control, handling significant compressions and abrupt crests with ease. However, if you’ve also selected one of the larger wheel sizes, the damping may be a little stiff on UK roads.
We advise choosing PASM adaptive suspension if you’re interested in a Boxster, Cayman, Macan, or Cayenne and have the extra cash to spare. It gives the Cayenne more flexibility, the Boxster and Cayman more capability, and it transforms the Macan into one of the best-handling SUVs on the road.
Would you choose the Active Suspension Management system from Porsche? Please share with us in the comments area below.
What does a car’s PSM do?
7 November 2020 The PCM, often known as the powertrain control module, is the brain of your car. Based on the data it receives from different sensors located throughout the car, it controls the engine, gearbox, and other components.
Describe Porsche PCM.
The central control module for all audio, communication, navigation, and basic vehicle operations in your Porsche is called the Porsche Communication Management, or PCM. The PCM system has a sizable touchscreen display with high resolution for simple and practical usage.
What in safety does PSM stand for?
- Process Safety Management Review Panel for Small Businesses. In order to gather input on numerous potential modifications to OSHA’s Process Safety Management Program (PSM) standard, the agency is establishing a Small Business Advocacy Review Panel.
In many different industries that use chemicals with such qualities, unanticipated discharges of toxic, reactive, or flammable liquids and gases in operations involving highly hazardous substances have been documented for many years. Regardless of the industry that employs these extremely dangerous chemicals, whenever they are improperly controlled, there is a risk of an unintentional leak, which raises the likelihood of catastrophe.
The Process Safety Management of Highly Hazardous Chemicals standard (29 CFR 1910.119), which specifies criteria for the management of hazards associated with processes involving highly hazardous chemicals, was released by OSHA to assist maintain safe and healthy workplaces.
Specific standards are addressed in relation to process safety management (PSM) for the general and construction sectors. The OSHA standard places an emphasis on the management of risks related to highly hazardous substances and develops a thorough management program that combines technology, processes, and management practices.
Standards for general industry and construction specifically address process safety management (PSM).