Adenine and Inline Designs are proud to present
a deep dive into the magic that happens under the hood
Adaptive Timing and Phasing (ATP)
Adaptive Timing and Phasing is a general term to describe a family of Adenine technologies used to achieve variable valve lift and timing. While the term has existed since it was introduced in the mid-1990s, there have been a range of different technologies that have fallen under this name. The current generation of ATP, referred to as Hydro-ATP, uses an electrohydraulic actuator to dynamically change valve lift to suit different driving conditions. It is similar to the system used in Fiat’s MultiAir engines; however, unlike MultiAir, which can only vary the intake valves, Hydro-ATP can vary both the intake and exhaust valves.
The system works by using a hydraulic fluid to transfer camshaft movement to the valves. As the cam lobe rotates, it actuates a piston which pushes hydraulic fluid into the valve actuator, opening the valves. However, the piston travel can be varied continuously, pushing more or less hydraulic fluid into the valve actuator, so the valve lift can be changed. At minimum piston travel, the piston is effectively disconnected from the cam lobe and the valves stay closed. This system saves space compared to the MultiAir design and allows for the use of DOHC, as well as control of both intake and exhaust valves.
This hydraulically controlled valve technology offers many advantages. Unlike older discrete systems, Hydro-ATP can continuously vary valve lift all the way down to zero. It can optimize valve lift for all different conditions including idling, low loads, and high loads. Full, continuous control of all valves means that the system is capable of Atkinson cycle (late-closing intake valves), exhaust gas recirculation (early-opening intake valves/late-closing exhaust valves), and even cylinder deactivation (closing both intake and exhaust valves).
Hydro-ATP, in combination with lean-burn direct injection, low friction piston coatings, and turbocharging, form the four key technologies that make Adenine cars so efficient.
With the level of comfort like a normal one. The rear end looks slightly… undetailed. One question - does it have 5 or 7 seats?
