Best engine of the year (again)
Second year in a row for Ford to win the award. http://wallstcheatsheet.com/stocks/the-humble-ecoboost-drives-ford-to-greatness.html/?ref=YF
Forum Discussion
rjstractor,
"On an unrelated note I did catch an error on the original specs for the Eco motor. It says it puts out 123 hp from 1400 to 4500 rpm, which is impossible unless it's peak torque was in the neighborhood of 400 ft./lbs! A torque curve can be flat or a power curve can be flat, but it's mathematically impossible for both to be flat."
You are so right and it's so obvious!
The formula for calculating the HP with/on a rotational force is RPM times Torque divided by 5252 = Horsepower. (RPM*T)/5252 = HP Both RPM and Torque are infinitely and accurately measurable values and HP is simply the result of a calculation. TORQUE is what turns the vehicle's drive wheel to the RPM it's rotating.
Any change to either one of the measured RPM or the Torque changes the HP value. Obviously the author of the article isn't too bright in math skills!
Being and engineer and having seen this formula posted constantly on the many forums for vehicles/RV's for years on end I didn't think it was even necessary to point out the foolish error in the article.
Since HP is almost always at given as a spec at the top RPM figure given the 123 HP number would be a paltry 38 HP at 1400 engine RPMs. A shade more than my Toro garden tractor's engine! What a powerhouse engine to move a perhaps 2400lb to 2800lb small car around the flat close to sea level streets of town. O'my, I forgot to add the driver and his wife and their 2 young kids! Better add the approx 600 lbs for 2 adults and 2-100 lb kids. Lets say that powerhouse engine's RPM's goes all the way up to 2000 RPM at 60 MPH in top gear on the highway. The 1.0L engine now has, due to the flat 148 pound-feet the author states from 1400 RPM to 4500 RPM, a mind boggling 56.36 HP. Of course, I suppose you could always drive is 2nd gear and let that engine scream to about 4000 RPM and then you might have around 100 HP going towards the drive wheel but there goes the fuel economy! Shucks, that's still not enough power needed to climb a 6% grade at 60 mph with 2 adult and 2 100lb kids inside.
123 HP at 4500 RPM's is a feel good value as how often would you ever opt to wind it that high?
"On an unrelated note I did catch an error on the original specs for the Eco motor. It says it puts out 123 hp from 1400 to 4500 rpm, which is impossible unless it's peak torque was in the neighborhood of 400 ft./lbs! A torque curve can be flat or a power curve can be flat, but it's mathematically impossible for both to be flat."
You are so right and it's so obvious!
The formula for calculating the HP with/on a rotational force is RPM times Torque divided by 5252 = Horsepower. (RPM*T)/5252 = HP Both RPM and Torque are infinitely and accurately measurable values and HP is simply the result of a calculation. TORQUE is what turns the vehicle's drive wheel to the RPM it's rotating.
Any change to either one of the measured RPM or the Torque changes the HP value. Obviously the author of the article isn't too bright in math skills!
Being and engineer and having seen this formula posted constantly on the many forums for vehicles/RV's for years on end I didn't think it was even necessary to point out the foolish error in the article.
Since HP is almost always at given as a spec at the top RPM figure given the 123 HP number would be a paltry 38 HP at 1400 engine RPMs. A shade more than my Toro garden tractor's engine! What a powerhouse engine to move a perhaps 2400lb to 2800lb small car around the flat close to sea level streets of town. O'my, I forgot to add the driver and his wife and their 2 young kids! Better add the approx 600 lbs for 2 adults and 2-100 lb kids. Lets say that powerhouse engine's RPM's goes all the way up to 2000 RPM at 60 MPH in top gear on the highway. The 1.0L engine now has, due to the flat 148 pound-feet the author states from 1400 RPM to 4500 RPM, a mind boggling 56.36 HP. Of course, I suppose you could always drive is 2nd gear and let that engine scream to about 4000 RPM and then you might have around 100 HP going towards the drive wheel but there goes the fuel economy! Shucks, that's still not enough power needed to climb a 6% grade at 60 mph with 2 adult and 2 100lb kids inside.
123 HP at 4500 RPM's is a feel good value as how often would you ever opt to wind it that high?
