What is ACT technology in Volkswagen 1.5 L TSI petrol engine|| difference between 1.0 &1.5 | Engine|

ACTIVE FUEL MANAGEMENT (FORMERLY KNOWN AS DISPLACEMENT ON DEMAND (DOD)) IS A TRADEMARKED NAME FOR THE AUTOMOBILE VARIABLE DISPLACEMENT TECHNOLOGY FROM GENERAL MOTORS. IT ALLOWS A V6 OR V8 ENGINE TO “TURN OFF” HALF OF THE CYLINDERS UNDER LIGHT-LOAD CONDITIONS TO IMPROVE FUEL ECONOMY.

In this kind of innovation Volkswegan has developed it as Active Cylinder Technology (ACT) to improve the fuel efficiency. The 1.4 TSI of the Polo BlueGT is the top engine of the entirely new series of petrol engines that has been developed. The engine range consists of 1.0, 1.2 and 1.4 litre engines. The efficient 1.0-litre three-cylinder engines are used to drive such cars as the new up!. The 1.2- and 1.4-litre four-cylinder engines were each designed as charged direct fuel injection engines (TSI).

The outstanding technical aspect of the engine is its active cylinder management (ACT). Volkswagen is the first carmaker to implement this fuel saving cylinder deactivation technology on four-cylinder engines, as it was previously the preserve of large eight or 12 cylinder engines. Shutting down the second and third cylinders during low and medium load states reduces fuel consumption in the EU driving cycle by about 0.4 l/60 miles*. For urban driving it saves as much as 1.0 l/60 miles*. Even while driving at 70 km/h in fifth gear, fuel consumption of the Polo BlueGT is reduced by 0.7 l/60 miles
ACT is active over an engine speed range between 1,400 and 4,000 rpm and torque outputs between 25 and approx. 100 Nm – a range that covers nearly 70 per cent of all driving states in the EU driving cycle! If the driver presses the accelerator pedal hard, both cylinders begin to work again without a noticeable transition. The high efficiency of the system has no negative effects on smooth running: even with two cylinders the excellently balanced the 1.4 TSI engine of the Polo BlueGT runs very quietly and with low vibration.

All mechanical switchover processes take place within one-half of a camshaft rotation; depending on engine speed this takes between just 13 and 36 milliseconds. Accompanying interventions in ignition and throttle valve processes smooth the transitions. What’s more, thanks to an accelerator pedal sensor and intelligent monitoring software, the system can also detect irregular driving profiles – such as during a drive through a roundabout or in sporty shifting on a highway. In such cases, cylinder shut-off is deactivated. The driver is aware of whether two or four cylinders are active by a related indicator in the multifunction display between the speedometer and tachometer.

ACT components.

Altogether, the components of active cylinder management weigh just three kilogrammes. Their actuators, the camshafts and their bearing frames are integrated in the cylinder head; two low-friction bearings reduce friction of the shafts. It is only with the TSI concept – petrol direct injection plus turbocharging – that a cylinder deactivation is even conceivable in its form today.

Volkswagen Virtus Key Features

Ventilated front seats

Sunroof

Wireless charger

10-inch touchscreen infotainment

Red colour ambient lighting

8-inch Digital instrument cluster

My Volkswagen Connect telematics

Touch-based climate control

Auto-dimming IRVM

Cooled glovebox

6 airbags

5 star GNCAP safety rating

Auto headlamps

Rain-sensing wipers

Price

Volkswagen Virtus price ranges between Rs. 11.48 Lakh - Rs. 18.77 Lakh depending on the variant selected.

When was the Volkswagen Virtus launched?

The Volkswagen Virtus was launched in India on 9 March, 2022. The 2023 version was introduced on 22 March, 2023.

What variants does the Volkswagen Virtus get?

The Volkswagen Virtus is available in three variants – Comfortline, Highline, Topline, and GT Plus.

What are the features available in the Volkswagen Virtus?

Exterior:

The front of the Volkswagen Virtus gets a clean design with two horizontal chrome slats. These extend up to the LED headlamps, which also get integrated DRLs. Further down, the fog lamps get vertical housing, while the chrome insert on the bumper gives the Virtus an appealing look.

At the side are dual-tone alloy wheels. Notably, the top-spec GT trim gets gloss black alloy wheels and a ‘GT’ badge on the front fender. At the rear, the split tail lamps get a smoke effect, and the ’Virtus’ lettering is placed more prominently at the centre of the boot. The colour options of the sedan include Carbon Steel Grey, Wild Cherry Red, Candy White, Reflex Silver, Curcuma Yellow, and Rising Blue.

Interior:

The cabin of the Volkswagen Virtus is dominated by a 10-inch touchscreen infotainment system with wireless Apple CarPlay and Android Auto connectivity, a wireless charger, ventilated front seats, automatic climate control, cruise control, an electric sunroof, a digital instrument cluster, and leather upholstery. The Virtus has the capacity to seat five occupants.

On the safety front, the Virtus is equipped with six airbags, multi-

[mehrajmohan]

Honda Accord had it over ten years ago in v6 with 3 cylinders and 4 cylinder switch over so it was even more advance