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How Koenigsegg reinvents manual transmission for CC850

The Koenigsegg CC850 Released in August 2022 Monterey Car Week is the re-imagining of the Swedish company’s first production car and one of the highlights is the gearbox like no other.

CC850 uses version of 9 speed light transmission are from Koenigsegg Jesko, but with the new Engage Shifter System (ESS) that converts the automatic transmission to a six-speed manual (however, it maintains full automatic with nine gears). Here Technical explanation The video provides insight into Koenigsegg’s reinvented tutorial.

First, the difference in mechanics. the ESS transmission has a clutch pedal just like a regular manual transmission, but it’s by wire and instead of a clutch, the ESS has seven pedals. These clutches handle gear selection, eliminating the need for gearshifters and synchronisers. It also lacks a flywheel, so the engine connects directly to the transmission.

Koenigsegg CC850

Koenigsegg CC850

The clutches are spread over two shafts. In automatic mode, one clutch on each axle engages to send power to the rear wheels, while allowing all nine gears to advance without the need for a very complicated gearshift mechanism. Like the clutch, the gearshifter is a wired device.

In the CC850, the transmission can also be manually shifted by moving the gear lever through the doors, similar to a regular manual transmission, while pressing the clutch pedal releases all seven clutches. Engagement still requires two clutches, but in this case a position sensor on the gear lever controls the first clutch, while foot pressure on the clutch pedal controls the second clutch.

The ratio corresponding to each gear number can also change depending on the transmission mode. For example, in track mode, the transmission will start with the second gear’s ratio as the first, but then switch to the third gear’s ratio as you start. That effectively tightens the differential without having to physically swap gears.

As for reverse gear, it depends on whether the vehicle is being driven in automatic or manual mode. The driver uses the clutch pedal for manual mode and not for automatic mode. And the transmission knows when the car is in automatic mode because reverse is located just above the drive in the gearshift style.

And while the clutch pedal is wired, with no mechanical connection to many physical clutches, it is designed to emulate the feel of an analog left pedal. That feeling is reproduced by software based on parameters from traditional manuals. It will even actually stall.

That means you get the convenience of an automatic and the feel of a manual in one transmission — one that’s lighter than a conventional manual, claims Koenigsegg. Going from the nine gears available in automatic mode to the six gears in manual mode can result in some large gaps between the ratios, but even that is resolved by the tight set of ratios. than used in tracking mode. Customers don’t seem to be concerned about any potential downsides; Koenigsegg announced that it Upgrade production CC850 to meet strong demand.

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