These advantages include a two - percent improvement in performance (via
increased volumetric efficiency), two - percent improvement in fuel economy (via reduced pumping losses) and a 30 percent reduction in hydrocarbon emissions.
The engine includes a variable induction control system to improve
volumetric efficiency at low and middle speed ranges, while an efficient belt layout reduces maintenance requirements and aids fuel efficiency.
Implementing an optimised fluid - dynamic intake system, it is characterised by particularly
high volumetric efficiency across the entire operating range, which translates into brilliant performance and cost - effective running at the same time.
As a result, it delivers precise control of the intake - valve events — beginning and end — delivering reductions in engine - pumping losses and increases
in volumetric efficiency.
To get the
best volumetric efficiency at a particular operating point, one must tune the valve events to be in - sync with these pulses.
MADE IN USA Gives you that street truck style with deep, aggressive sound Patented Superflow technology means dramatically more efficient exhaust flow Comes in aluminized or stainless steel Baffled and chambered design means
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Hypermiling maximises the fuel efficiency of a vehicle, and the HyperEconiq Ioniq achieves this by means of a pulse - chamber intake and exhaust system for
enhanced volumetric efficiency and low - rolling resistance tyres.
Thermodynamic efficiency has also been improved in the EA211 thanks to it running on the Miller cycle,
where volumetric efficiency is lower compared to an engine with conventional valve timing.
As it states in the body, this correlates
with volumetric efficiency (how completely a cylinder fills with air on the intake stroke) at WOT.
In order to achieve the
optimum volumetric efficiency in the lower portion of the engine's operating range, rocker arms are programmed to follow cam lobes that provide low lift and reduced duration (shorter time open with less valve lift).
The increase in power was made possible by the engine's improved
volumetric efficiency through reduced intake load losses and by exhaust backpressures, together with optimized electronic control.
To
boost volumetric efficiency, the V12 employs continuously variable - length intakes - a mainstay in F1 engine technology until banned by rule changes — which optimise performance as a function of engine speed.
In passenger cars at low partial loads, a higher swirl level (partial closing of the filling port in a four - valve cylinder head) can lead to a better particle / NOx trade - off, whereby consumption as well as CO emissions increase because of the deterioration in volumetric efficiency [1].
Using CVVT on both camshafts has several advantages when compared to using it only on the intake camshaft including an improvement in performance (
increased volumetric efficiency) and fuel economy (reduced pumping loss), and a reduction in hydrocarbon emissions
Motorcycles, on the other hand do not have quite such a large potential for varying weight (as cars), and as such their engines don't need to be straddled with these same design limitations / specifications; hence their emphasis on high rotational speeds, light weight,
high volumetric efficiencies, and KW - rather than (specifically) torque.
Variable operation of the engine's intake valves are controlled for
optimal volumetric efficiency, air / fuel mixing, burn rate and exhaust flow.
The idea of hypermiling refers to maximising the fuel efficiency of a vehicle, which the HyperEconiq Ioniq achieves by means of a pulse - chamber intake and exhaust system for
enhanced volumetric efficiency and low - rolling resistance tyres.
The engine «struggling» to intake air at high engine speed is measured as «
volumetric efficiency».
DOHC was introduced to improve
the volumetric efficiency of a given engine, lending itself to more power.
Defining «
volumetric efficiency» and the context in which the term is important would be improve this answer for novice readers (and the OP is clearly asking a novice question).
Allowing the engine to aspirate better; increasing
its volumetric efficiency, increases it's rpm.
You should consider doing
a volumetric efficiency test as well.
Because the TB is much bigger, but opened only partially, you still have the swirl / turbulence that the throttleplate creates, while also keeping maximum manifold pressure or
volumetric efficiency.
Perform
a volumetric efficiency test, record your IAT in °F, RPM and MAF in g / s.
The short version is that by electronically changing exactly when the intake and exhaust valves open and close, you can increase
the volumetric efficiency of the engine across a large RPM range.
On the contrary, because a turbo forces air into your engine, it actually artificially increases
the volumetric efficiency of the engine, making for a more optimal, complete combustion stroke.
And torque depends on how well the air is ingested -
volumetric efficiency.
In order to increase
the Volumetric Efficiency (VE) of your engine «pump», everything must be balanced to add as much fuel that is needed with any added air.
For
volumetric efficiency we want the intake stroke to fill the cylinder with the max - air - fuel.
By dramatically reducing the intake temperature as the water evaporates,
volumetric efficiency is improved, helping to prevent knock and allowing for more boost pressure from the twin turbochargers.
Another consideration of how well an engine runs (thus the power output) is
volumetric efficiency or VE.
Higher power does not mean higher mpg and «
volumetric efficiency» has nothing to do with fuel efficiency (in fact, higher volumetric efficiency means you suck in more fuel and air per stroke).
Performing
a volumetric efficiency test can reveal the accuracy of a vehicle's Mass Airflow Sensor (MAF) as well as potential issues with the engine and can be the key to successfully diagnosing and fixing a vehicle.
It's quite common for techniques which deliver higher power and
volumetric efficiency to actually reduce fuel economy.
Cylinder filling with atmospheric air is aided and
volumetric efficiency is increased for the same reason.
Higher compression increses hp / torque and
volumetric efficiency.
Volumetric efficiency is cylinder filling efficiency, determined by intake and exhaust design and valve timing and lift.
«You aimed to increase
the volumetric efficiency of the engine,» explains Brittain, «by increasing the revs by allowing the engine to breath.»
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.
Instead, the engine changes
its volumetric efficiency by altering the amount of intake valve lift.
What this means for you is that you are given more control and capability when it comes to engine - pumping and
the volumetric efficiency.
Because the Mulitair concept also delivers more torque and power for a given engine size (as
the volumetric efficiency at high torque requirements is improved), a smaller displacement engine can be chosen to accomplish the same task.
Adding more valves increases valve area and improves the flow of intake and exhaust gases, thereby enhancing combustion,
volumetric efficiency, and power output.