With eight speeds, driving
at a lower rpm in both city and highway environments also effectively helps reduce emissions by nearly 11 % on both vehicles.
Most prominent is a dual - mass flywheel with a centrifugal pendulum, intended to reduce vibration and allow the engine to run
at lower rpm in higher gears.
The result is a powertrain that thrums almost like driving a diesel, buzzing along
at low rpm in too many city - driving situations.
Not exact matches
The primary power source for the Patriot is a twin spool gas turbine like those found
in jet engines, which runs
at 100 000 revolutions per minute
in its high - speed stage, and 50 000
rpm in its
low - speed stage.
Plus, you can use your treadmill
in any room of the house because the motor always runs
at low RPMs, which minimizes noise and enhances durability.
less weight, and more reps, is the same as an cyclist spinning
in a
lower gear, or a car revving up
at a higher
RPM.
As suggested
in the manual, I have driven
at lower gear / higher
RPM for some time, and the light shut down.
Because 99 % of the time I will be within these
RPM ranges, the engine will be producing more horsepower without a lot of noise or fuss, with better engine longevity - the engine will be producing more power
at a
lower RPM hence less engine wear, and finally there is more instant acceleration when I need to accelerate without having to change down a gear every time, which I would have to do
in the peaky engine.
With the soft top down (it folds away
at the touch of a single button
in about 20 seconds), all that Z51 - amplified V - 8 goodness floods the cockpit with a
low -
rpm boom and,
at high revs, a crackling thunder that'll make you think you're riding a Saturn rocket yourself (when the exhaust ricocheted off the walls of a short Malibu tunnel, I nearly swooned).
There is decent torque from as
low as 2500
rpm, but you tend to spend your time higher
in the rev range because the 3.0 - liter six gets its second wind
at about 4500 revs and makes a delicious, creamy growl that wells as you approach the 7000 -
rpm redline.
There is little lag
at very
low RPM but you get a healthy shove of acceleration
in the mid-range.
Reggiani went into detail about the engine choice, too: «When we made a product profile, we recognised that talking about an SUV — a car that must be able to go offroad, or go
in a situation where you have asphalt that's not flat — it was more and more fundamental to have high level of torque
at low rpm.
All that torque means that the power is available even
at low revs — from 1600
rpm,
in fact — which means that the S350 doesn't feel slow or sluggish, especially
in city driving.
Set these test conditions: Engine set to 1800
rpm Recirulation air direction on Fan speed on
low Windows up Temp set to max cold Air outlet to dash vents Vehicle
in the shade Run for
at least ten minutes, longer on a hot day.
Unlike many turbos that are lazy down
low, the pair
in the Flex spool up quickly — all 350 lb - ft of torque is available
at 1500
rpm — making the Flex an adept urban runabout as well as a capable, medium - duty tow vehicle.
While it may not add a huge amount of oomph to the three - door, as we found
in our first drive, it turns the C30 into quite the hot hatch around town; peak torque comes
at a
low 1500
rpm and pulls all the way to 5000
rpm.
My bike (a KTM Duke 200) has poor acceleration
at low engine speed (from 2000 to 4000
rpm)
in every gear, but after 4000
rpm is the acceleration is normal.
I have to take my hat off to BMW, the car, despite being small, very roughly sprung and not too powerful
in the
low rpm range, is a true racer
at heart.
In conclusion, Choppers have the particular big bore long stroke design to have max torque at low rpm which is ideal for a cruiser whereas a sports bike has to rev to higher rpm to reach its peak torque figures which is not very desirable in cruisin
In conclusion, Choppers have the particular big bore long stroke design to have max torque
at low rpm which is ideal for a cruiser whereas a sports bike has to rev to higher
rpm to reach its peak torque figures which is not very desirable
in cruisin
in cruising.
Then probably somewhere around 1.5 k miles ago, again only while the car was cold, I would hear a whining kind of noise whenever I accelerated fast
in 1st and 2nd gear (I don't mean pedal to the floor) or if I had it sitting
at lower rpms for cruising
in town and put the pedal down it would do it also (like 3rd gear going ~ 20 - 25mph, probably around 1700rpm).
Throttle response is not as linear as
in a normally aspirated engine — you can definitely feel the rush of the turbocharger — but max torque comes on
at a
low, 1650
rpm, so it's not like you're waiting around for the turbo to kick
in.
At the
lower end of your
RPM range you will have more power which makes the vehicle more user friendly driving
in the city.
Though the diesel's EPA figure of 23 mpg combined beats the gas model's 18 mpg average, its torque is mostly available
at lower rpms, petering out by the time the engine reaches its most crucial point
in the powerband.
In contrast, the torquey, normally aspirated 6.2 - liter of the Grand Sport is content to loaf
at the
low end or charge toward redline, but
at part throttle between 2500 and 4000
rpm it huffs like a mouth - breather having just climbed the stairs to the thirty - seventh floor of GM's headquarters.
DSF is a sort of next - generation cylinder shutoff, but is much more sophisticated than shutting off a bank of cylinders
in a V - 6 or V - 8
at low -
rpm highway cruising speeds.
Better yet, it's also fairly powerful:
In F - 150 spec, that engine produces a hearty 365 hp and 420 lb - ft of torque — the latter arriving
at a fairly
low 2500
rpm.
This question is for the same engine and the same car as
in the following question: Likely cause of poor performance
at low RPM but normal
at higher
RPM?
The car is
in full fighting mode now: shift times are down to 50 milliseconds, 275 electric horses are ready to boost for up to 30 seconds, gear changes are conducted
at high
rpm in Drive, the ESP / ASR threshold is even
lower, the tail rudder is
in runway position, and the nasal air intakes are wide open.
And the engine's high torque
at low rpm (thank you, turbos), means a bunch of horsepower down
low in the rev range (for you fellow drag racing and dyno - chart freaks you know what I mean).
In general engines run most efficiently close to their peak torque
at wide open throttle and
at the
lowest RPM possible.
As always, turbo torque comes on
low in the rev range — peak grunt is available
at 2100
rpm — making passing on the freeway «silky smooth,» as downshifts are rarely needed.
The thing that surprises me is the very
low voltage signal, because the engine coolant temperature shows that the engine is quite warm (which it should be after 9 minutes of running
at 4000
RPM), so regardless of the O2 heater malfunction that lambda sensor should be hot and triggering the ECU to run
in closed loop (which it clearly isn't).
A 1.0 - liter turbocharged EcoBoost three - cylinder will be the base engine
in China, with a new 1.5 - liter turbo EcoBoost I - 4 tuned for high torque
at low rpms serving as the optional powerplant.
Then add acetone
at a rate of six ounces for every ten gallons and run the engine immediately
in low gear
at high
RPM (3,500
RPM) for 15 minutes and floor it on the highway six times.
At WOT (Wide Open Throttle) at very low RPM, the engine will almost stop, as if there is a big hole in the fuel map and it doesn't provide the correct mixtur
At WOT (Wide Open Throttle)
at very low RPM, the engine will almost stop, as if there is a big hole in the fuel map and it doesn't provide the correct mixtur
at very
low RPM, the engine will almost stop, as if there is a big hole
in the fuel map and it doesn't provide the correct mixture.
Throttle response, seamless
in most situations, is a bit sluggish when trying to rock out of deep slush, although the electric motor does boost
low - end torque (163 lb - ft
at 2000
rpm versus the conventional XV's 145 lb - ft
at 4200
rpm).
Typically, a long stroke will result
in an engine with higher torque
at lower RPM due to the higher reciprocating mass.
In fact, the larger engine, according to chief engineer Akihiko Otsuka, actually helps raise the highway mileage figure because it runs
at fifteen percent
lower rpm.
Occasionally
at low RPMs (pulling out of the driveway once, a few times
in a parking lot) the engine just dies.
PS - Using maths, the max pressure should be around 70 bars (theoretical,
lower in reality) but I am getting around 20 bars (EDITED, previously 11 by mistake)
at 100
rpm.
The saddest thing is, turbo motors usually use more fuel than their n / a counterparts
in normal driving... Only
at very
low, test - friendly engine speeds (when the turbos aren't spinning) do they actually reduce consumption, but I don't know many people who drive below 1,000
rpm.
Despite torque peaking
at a
low 1850
rpm, it takes a lot of revs to accelerate the 3102 - pound Cruze both
in casual city driving and spirited back - road bombing.
The 2.5 - liter's peak also occurs 400
rpm lower than
in its smaller - displacement Japanese counterpart — whose peak torque happens
at the same engine speed as the previous - generation U.S. - spec WRX.
[28] For example,
in Opel bi-turbo Diesel, only the smaller turbocharger works
at low speed, providing high torque
at 1,500 — 1,700
rpm.
Though the literal power band covers most of the operating
RPM range, particularly
in first gear (as there is no
lower gear to shift down to, and no «flat spot»
in which the engine does not produce any power), the effective band changes
in each gear, becoming the range limited
at the upper end by either the limiter, or a point roughly located between peak power and the redline where power drops off, and
at the
lower end the engine's idling speed.
The improvements
in low -
RPM performance, which is where most street - driven automobiles operate a majority of the time, occur
in trade for a power and efficiency loss
at higher
RPM ranges.
The switch - down back from high to
low RPM cams is set to occur
at a
lower engine speed than the switch - up (representing a hysteresis cycle) to avoid a situation
in which the engine is asked to operate continuously
at or around the switch - over point.
Torque is
lower, with the U.S. - spec STI generating 290 lb - ft of twist
at 4000
rpm, versus about 299 lb - ft
in Japan.
Optimal
low RPM valve timing lift and duration settings would result
in insufficient filling of the cylinder with fuel and air
at high
RPM, thus greatly limiting engine power output.
VTEC (Variable Valve Timing & Lift Electronic Control) is a system developed by Honda which was said to improve the volumetric efficiency of a four - stroke internal combustion engine, resulting
in higher performance
at high
RPM, and
lower fuel consumption
at low RPM.