Meet the All-new, All-electric 2020 Porsche Taycan 4S

Discussion in 'BEV or Battery Electric Vehicle' started by xcel, Nov 28, 2019.

  1. litesong

    litesong litesong

    I don't know why I've been allowed to live, all these decades. God must have gotten between me & all the bribe-takers.
     
  2. EdwinTheMagnificent

    EdwinTheMagnificent Legend In His Mind

    What is the price tag on that efficiency ? Oh , yeah. 1.5 Model S's. Six Leafs. Nine Civics.
     
  3. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    How the Taycan Recovers Energy When Braking

    Porsche Taycan

    [​IMG]

    The German autobahn is empty and a Taycan driver is hauling @$$ at 125 mph until they see a delivery van passing a large 18-wheeler ahead. No problem as you slow down to 60 mph. A great deal of energy is consumed in the blink of an eye as non-electric vehicles brakes turn kinetic energy into copious amounts of heat through the discs. The Taycan however is an all-electric and automatically recovers a large portion of this energy, turning the electric motors into generators while slowing and storing the usually wasted energy in the large traction battery for later use.

    Kinetic braking energy increases twice as fast as speed – double the speed means four times the regen. When braking from 60 mph, the Taycan generates four times as much energy as when braking from 30 mph.

    How does the Taycan do that?

    Electric motors are normally controlled via both the rotation speed and torque running in the same – positive – direction. But each electric motor can function as a generator in which the motor continues to turn in the same direction but is now powered by the wheels rather than powering them itself. It generates electrical energy, rather than consuming it. And because it takes a lot of energy to power the motor and thus turn the rotor against the magnetic resistance, this negative torque is used to slow the vehicle.

    The control units and power electronics of the electric motors in the Taycan are intelligently connected with the controls and logics of the brake control system. The conventional hydraulic wheel brake and electric motors can slow down the vehicle together. Within milliseconds, the electronics decide what percentage of the braking will be electric and what percentage will be hydraulic. While the driver cannot feel the difference, they can see it in the power meter in the instrument cluster.

    Around 90 percent of everyday braking is 100 percent electric, allowing the Taycan to recover energy. In extreme situations, such as full braking from a top speed in a fully loaded Taycan, a maximum braking capacity of more than 2 MWs must be applied and the electric powertrain cannot absorb that amount of power on its own. The conventional wheel brake is then applied to shunt the excess. It may also activate because the battery is already full and can no longer recharge through regen. Thanks to the design of the electric motors and the electronics in conjunction with Porsche’s signature intelligent control, the Taycan can regen up to 290 KW, the approximate same power that we have charged it at. Porsche plans to increase that soon.

    Some OEMs have the electric drive’s regen system activate automatically the moment the driver removes their foot from the gas pedal, which is referred to as one-pedal driving. Porsche made the decision to have the driver apply the brakes to slow down, which is standard driving behavior.

    The Taycan secures around one-third of its range with the recovery of brake energy through Regen. And like all driving activities, you will achieve more range by forgoing regen as much as possible due to the conversion losses. In other words, anticipate the slow down with the long glide vs relying on the brakes over a much shorter distance. When possible, that is. ;)

    Wayne
     
    EdwinTheMagnificent likes this.
  4. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    New Nürburgring Lap Record for the Porsche Taycan

    [​IMG] Not allowing a competitor to hold a performance record on their own soil, a production Porsche Taycan Turbo S achieves the fastest EV lap on the Nürburgring Nordschleife in history.

    Wayne Gerdes – CleanMPG – Aug. 10, 2022

    [​IMG]

    The record setting all-electric Porsche Taycan Turbo S sports sedan was equipped with a new performance kit and Porsche Dynamic Chassis Control (PDCC) – plus the mandatory roll cage and racing seats – as an entirely standard production vehicle. It weighed the same as the series production car. A notary was on hand to verify the new record time on the infamous 12.9-mile circuit in Germany’s Eifel region, while TÜV Rheinland confirmed that the record-breaking road car was a standard production model.

    The 2022 Porsche Taycan Turbo S with the all-new performance kit posted a lap time of 7:33.3 on the Nürburgring Nordschleife besting the previous record held by the Tesla Model S Plaid at 7:35.579.

    The performance kit includes 21-inch RS-Spyder-design wheels with road-approved, Pirelli P Zero Corsa sports tires that are now available for the Taycan. The tire compound is similar to racing tires. Another element of the performance kit is a software update to the Porsche 4D Chassis Control so that it works in harmony with the sports tires. The system analyses and synchronizes all the chassis systems of the Taycan in real time.

    Performance by Porsche Tequipment

    The performance kit is offered through Porsche Tequipment and is only available in Germany and only for the 2023 model year Taycan Turbo S sports sedan. Production of these cars started in late July 2022, while the performance kit itself is expected to be available from the end of the year. The plan is for the retrofit to be carried out after initial delivery, in the Porsche workshops in Zuffenhausen. Transport to and from the factory is included, as is the individual vehicle approval and registration of the Taycan.

    The sports tires are primarily designed for track driving and owners can switch back to standard tires at any time. It is not necessary to restore the original chassis software when doing this.
     

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