insights about the 1.2 e-vti 82hp engine please

Siscooo · Post Fri Jan 17, 2020 1:17 pm

Hi there,

Just bought a 2015 Citroen c3, i had before and i still have another one which is diesel 1.4 HDI. But this time i bought the petrol version with this interesting engine 1.2 E-vti for which i never heard before. A lot of people claim this car to be “semi-hybrid”.

They say that between 2000-3000 rpms there is a hibrid battery which supports the petrol engine and makes the car fuel efficient. But i cant detect anything in this regard.

Petrol engine fully kicks in only when you need more power. Also from what i read the average fuel consumption is 4.5liter/100km, but momentally at my car figures out 6.2. The gearbox is electronic and im not sure yet if it has 5 gears or 6 without reverse.

Can somebody give me more insights about this 1.2 e-vti 82hp engine. Im a little bit concerned about the fuel consumption. Otherwise the car is amazing on driving and the engine is very quiet.

Arfur Dent · Post Fri Jan 17, 2020 1:47 pm

Hi

The 1.2 e-vti engine is a 'stop-start' system.

When the car pauses at say, a red traffic light and the engine idles it will switch off fuel to the engine and it stops.

On pressing the accelerator, the engine is restarted and the car continues its journey.

The inefficiency problem with this design is that the battery needs to recharge more often and this takes fuel to power the alternator more.

So, the clever solution is the ( e- ) part of the new engine that recovers energy from braking that recharges the stop-start battery form 'free energy' - that which would have been wasted as heat in the brake pads.

The Volt Control system manages the alternator to recover energy on deceleration. A hybrid battery stores the energy and returns it when the engine re-starts (e-booster)

So you don't have an electric C3, and won't notice any difference to the other 3 cylinder engines, other than it has stop and start feature and you may need to fill up with fuel less often.

I would guess you have the ETG5 gearbox, semi-auto because that is what they fit to the 1.2 e-vti engine

Siscooo · Post Fri Jan 17, 2020 1:59 pm

Thanks for your detailed explanation.

What do you think about fuel consumption, will it drop below 6. I think this is high in contrary of what citroen have stated.

routemaster1 · Post Fri Jan 17, 2020 3:22 pm

Arfur Dent wrote: ↑Fri Jan 17, 2020 1:47 pm Hi

The 1.2 e-vti engine is a 'stop-start' system.

When the car pauses at say, a red traffic light and the engine idles it will switch off fuel to the engine and it stops.

On pressing the accelerator, the engine is restarted and the car continues its journey.

The inefficiency problem with this design is that the battery needs to recharge more often and this takes fuel to power the alternator more.

So, the clever solution is the ( e- ) part of the new engine that recovers energy from braking that recharges the stop-start battery form 'free energy' - that which would have been wasted as heat in the brake pads.

The Volt Control system manages the alternator to recover energy on deceleration. A hybrid battery stores the energy and returns it when the engine re-starts (e-booster)
So you don't have an electric C3, and won't notice any difference to the other 3 cylinder engines, other than it has stop and start feature and you may need to fill up with fuel less often.

I would guess you have the ETG5 gearbox, semi-auto because that is what they fit to the 1.2 e-vti engine

To the best of my knowledge, Citroen have never supplied any type of hybrid in the UK until the very recently announced C5 Aircross Hybrid. Several cars have been sold under the e label. As stated above these have all been stop/start.

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