2017 Mazda CX-5

[Archerfish]

I wonder if there's a real need for a turbocharged engine here in PH, considering that traffic is horrible at urban areas and you can't drive beyond 100kph at the highway (unless you want to prove something like breaking the law without getting caught). The naturally aspirated SkyActiv engine is good enough already on FC with sufficient engine power.

If I'm not mistaken, the turbocharger is used to increase the efficiency of the engine. We normally think that turbochargers and superchargers are used to increase power. However, a turbocharger is run by the exhaust of the engine unlike a supercharger.

Since the exhaust gas is used to run the turbocharger, the heat energy that will be "thrown away" to the atmosphere is utilized. An increase in efficiency of about 10% or so is achieved. I may not have the correct figure but in theory, there should be an increase in efficiency as the turbocharger is able to convert the "wasted heat energy" into "useful" mechanical energy.

[Bravoexo]

I may not have the correct figure but in theory, there should be an increase in efficiency as the turbocharger is able to convert the "wasted heat energy" into "useful" mechanical energy.

Air + Fuel = Bang. More Air, means less Fuel to get the same Bamg, in theory....but what is needed is the ratio of fuel to air, usually it remains the same... so you will normally have to consume more fuel...to get more bang. As you do not want to run Rich or Lean...

If you do however get to that ideal speed, where the exhaust contributes enough to get more air into your fuel/air mixture that the efficiency is at max, then you'll likely end up with a great fuel consumption....but it is hardly anywhere near idle speeds of EDSA or in the roads of Metro Manila.