Thread: Geneva motor show: Audi omamljivati s A3 g-tron

A3 na plin mogao bi utrti put ugljično neutralnom motorizmu zahvaljujući Audijevoj revolucionarnoj tehnologiji e-plina. Audi će na sajmu automobila u Ženevi predstaviti A3 na plinski pogon. A3 Sportback g-tron stvoren je u suradnji s Audijevim novim postrojenjem za e-plin u Werlteu, koje proizvodi ugljično neutralan plin iz obnovljive električne energije.
Pogonski sklop g-trona sastoji se od dva spremnika za plin i običnog motora s unutarnjim izgaranjem. Spremnici mogu pohraniti e-plin koji proizvodi Audi ili obični stlačeni prirodni plin (CNG).
Pohranjeni ispod poda prtljažnika, Audijevi spremnici mogu primiti po 7 kg plina, pohranjenog do 200 bara. Audi tvrdi da je potrošnja goriva na plin za g-tron 3. 5 kg/100 km, što daje domet samo na plin od 400 km (242 milje).
Using gas means that each fuel tank weighs, when full, 27kg, less than a conventional or petrol diesel fuel tank. Constructed from a polyamide polymer and reinforced with carbonfibre-reinforced polymer, the tenkovi are extremely strong and light.
An electronic pressure regulatoru boosts the efficiency of the A3 g-tron when running on gas. It allows for low-pressure gas to be combusted during low-speed driving, while also allowing it to flow at high pressure when greater performance is required.
The petrol engine in the A3 g-tron is based on the 1. 4 TFSI found in the A3 range and produces 108bhp and 147lb ft. Audi says the concept is bivalent, meaning performance is identical regardless of fuel; top speed is 118mph and 0-62mph takes 11 sekundi. The range of the engine running on petrol, is 900km (559 miles).
The A3 g-tron is part of a wider project from Audi involving its e-gas facility in Werlte. It uses renewable electricity to produce gas through the electrolysis of water, making and hydrogen oxygen, and the reaction of the vodik with CO2 to produce synthetic methane which Audi calls e-gas. The e-gas is chemically identical to natural gas.

Audi will use the e-gas to power 1500 A3 g-trons, each of which will cover 15000km a year in trials. Even when the emissions for constructing the e-gas plant are accounted for, Audi claims a CO2 figure of less than 30g/km.