Mustang Ecoboost Forum banner
1 - 11 of 11 Posts

·
Registered
Joined
·
382 Posts
Discussion Starter · #1 ·

·
Registered
Joined
·
231 Posts
So is that meant to make the aerodynamics better? I always thought that letting the air pass through the car through the grille would decrease resistance. I bet there is some YouTube video that explains this or something.

They must have chosen to only put the active grille shutters on the EcoBoost model because of something to do with aerodynamics.
 

·
Registered
Joined
·
231 Posts
didnt know the ecoboost had these

awesome.

because the ecoboost is awesome thats why.
How insightful.

I think that this guy may know a bit more about this than you do though.

2015 Mustang Tech Aerodynamic Forum - YouTube

Each of the three Mustang variants has a slightly different grille design, only allowing as much air through as each engine needs to cool and to breathe. On the turbocharged Ecoboost model, active grille shutters can adjust this to an even greater degree--opening wide for cooling, or closing to improve aero. Further preventing the parachuting phenomenon are the car's hood vents, which allow excess pressure to exit through the hood and over the car.
 

·
Registered
Joined
·
382 Posts
Discussion Starter · #5 ·
So is that meant to make the aerodynamics better? I always thought that letting the air pass through the car through the grille would decrease resistance. I bet there is some YouTube video that explains this or something.

They must have chosen to only put the active grille shutters on the EcoBoost model because of something to do with aerodynamics.
no it has to do with cooling. The 5.0 wouldn't be able to breathe properly at sustained crusing speeds, the eco however requires less cooling, plus because the engine takes up less space in the bay there is much less heat soak.

as for aero, no its more efficicent for the air to travel around and over the car than through it. Because keep in mind when it goes through the car, it doesnt pass through the car unimpeded it hits up against the firewall which actually create internal drag...
 

·
Registered
Joined
·
470 Posts
Good point, smaller engine also allows for easier configuration of where to have an air intake suck in air from, so much more to work with
 

·
Registered
Joined
·
231 Posts
But if the Ecoboost engine needs less cooling than wouldn't it not need the active shutters on the grille instead of needing them?

At least we know that it is a deliberate decision based on what's best for the car instead of something just to do with trim levels or costs.
 

·
Registered
Joined
·
228 Posts
im guessing it helps cool the turbos? turbo engines generally run hot, but at the same time need the engine to warm up quickly to be efficient
 

·
Registered
Joined
·
382 Posts
Discussion Starter · #9 ·
But if the Ecoboost engine needs less cooling than wouldn't it not need the active shutters on the grille instead of needing them?

At least we know that it is a deliberate decision based on what's best for the car instead of something just to do with trim levels or costs.
That doesnt make sense, Grill Shutters REDUCE cooling. Here, maybe pictures will help.

EcoBoost



5.0 GT



There is more room in the Ecoboosts engine bay, meaning there is LESS Heat Soak. Heat Soak is when heat is transferred from component to component from simply operating int he same environment. Notice how crammed in the 5.0 is. There is less available area for the heat to dissipate by itself therefore the 5.0 has MORE Heat Soak, meaning any reduction in cooling (Active Grill Shutters) is going to detrimentally affect the engines operations.

Plus the Ecoboost is about being economical, especially if they want it to fly in Europe. So marketing is definitely a big part of it as well. Grill shutters will typically give you a 1-2% improvement in efficiency, which yea not much however its better to say you have them, than to not...
 

·
Registered
Joined
·
470 Posts
grille shutters sound cool, but clearly give go significant improvement, not enough to make it a must to put on, but likely it helps to sell cars, including it in their marketing script.
 

·
Registered
Joined
·
382 Posts
Discussion Starter · #11 ·
grille shutters sound cool, but clearly give go significant improvement, not enough to make it a must to put on, but likely it helps to sell cars, including it in their marketing script.
well 1-2% savings while it may not seem significant, over the life time of the vehicle it can aggregate to several thousand dollars saved in fuel costs...
 
1 - 11 of 11 Posts
Top