Compressor Displacement ???

[Dezaremos]

Not an expert, but I am a bit of a Physics buff.

Higher displacement would mean it's able to move more refrigerant (higher cooling performance) when all else are equal... particularly the compressor shaft RPM. Hence, moving 120cc of refrigerant will put a bit more load on the engine than say a compressor pushing just 85cc.

As far as compressor goes, cooling performance is a function of how much refrigerant it can move at a given time. Other factors come into play (ie. evaporator and/or condenser size, engine displacement, operational RPM range, passenger cabin volume, etc.) when designing which compressor is best for a particular vehicle. Manufacturers typically wants the best compromise of having good cooling performance while still being fuel-efficient.

My Corolla GLi 1.6 top model is equip with Denso TV12c 120cc vane type compressor, I have heard and read in the internet that the low end models on this corolla 1.3 is equip with a Sanden TRS090 85cc scroll type compressor ..

Can you explain why they put a scroll compressor on their 1.3 models ?? Is it because on the engine being only 1.3 and scroll compressor are light on the engine ?? Will I benefit if I replace my compressor from TV12c to TRS090 (my original tv12c is due for replacement) ?? I want a compressor thats light on the engine but also cools efficiently .. I've also heard that this TRS090 is also use on honda city models ..