A
balance shaft is a part in an engine that helps reduce vibrations and keeps everything running smoothly. It spins at the same speed as the engine but in the opposite direction to counteract any unbalanced forces that can cause shaking or engine noise.
Full definition
The use
of balance shafts allowed Porsche to use a 3.0 L (2,990 cc) inline - four engine on road cars first in the 944 S2, but the largest modern non-diesel was the 3,186 cc (194.4 cu in) Pontiac inline - 4 produced from one half of the Division's 6,373 cc (388.9 cu in) V8 for the debut of its 1961 Tempest.
Action Need To Fix It: Chrysler will notify owners, and dealers will replace the engine
balance shaft module, free of charge.
The 2.0 TDI clean diesel features separate cooling circuits, two
balancing shafts in the crankcase, a cylinder - pressure sensor, substantially reduced inner friction and a common - rail fuel injection system with a maximum pressure of 2,000 bar.
Mitsubishi says a new
engine balance shaft provides smoother acceleration while keeping the Sport's 31 mpg highway rating intact.
The V10 configuration is not an inherently balanced design like a straight - 6, V12, boxer engine, or V8 (ignoring the counterweights) and does still have a small second order rocking motion, which can only be compensated
by balance shafts.
Fitted with
dual balance shafts that are intended to yield quieter operation, the 2.2 - liter four - cylinder generates 145 hp.
Worse,
without balance shafts, the engine practically begs you to short - shift it, due to deafening boominess and vibrations severe enough to rattle the dashboard.
In 4 - cylinder engines, two shafts turning in opposite directions on either side of the engine's crankshaft are generally used, while in V - type engines, a
single balance shaft is used
This exploit is possible thanks to a new injection system, a higher compression ratio, new friction components, an exhaust gas recirculation system (EGR) and an
optimized balance shaft.
Unlike the Ford's EcoBoost, EcoTec is an all - aluminium construction and the technologies incorporated in engine are continuous variable valve timing,
counter balance shaft dipped in oil sump and exhaust manifold integrated in the cylinder head.
This all - new four - cylinder engine runs smooth thanks to
internal balance shafts to counteract vibration, combines power with good fuel efficiency thanks to variable valve timing / lift and direct fuel injection, and operates with an easy, free - revving liveliness thanks to careful detailing to reduce friction and because, well, that's just the Honda way.
To quell vibration from this long - stroke, three - cylinder configuration, the flywheel and crank pulley are purposely unbalanced to compensate, so power -
sapping balance shafts aren't required.
When The Timing Marks Are Set Correctly On The Cam Shaft Sprocket, Oil Pump Sprocket, And
Balance Shaft Sprocket And The Ingen Is At Tdc...
A new, lighter engine block casting along with new
aluminum balance shaft assembly shaves six pounds from the engine's gravitational weight.
Essentially a half - six engine, the N13 three - cylinder unit makes use of
special balance shafts and dampers that keep vibrations in place, a common trait in these type of compact engines.
Counter-rotating
balance shafts cancel vibrations, and several of the engine's components, such as the power steering pump and alternator, are mounted directly to the engine.
A forged steel crankshaft with
integrated balancing shaft drive, weight - optimized piston and forged conrod contributes to the high level of performance within the engine through reduced frictional coefficients.
The 2.3 - liter, standard on the GT and optional across the rest of the Sunfire line, will come with a counter-rotating
balance shaft system that erases much of the vibration and harshness that marred the performance of previous versions of the Quad 4, which have been used in various GM cars.
The hinged connecting rods smooth out engine operation enough to allow engineers to remove the second -
order balance shafts — engine vibration and noise is said to be similar to that of a V6.
The diesel has its
own balance shafts to iron out vibration and, like the petrol engines, has its exhaust manifold on the firewall side of the engine bay.
Dual in -
block balance shafts were integral to the design, the power - steering pump was mounted directly to the cylinder head and driven by the intake camshaft, the water - pump housing was cast into the block, and the A / C compressor and alternator were mounted directly on the block without brackets.
A counter - rotating
balance shaft helps to smooth out crankshaft vibrations and highly developed engine mounts remove even more buzz.
The American -, Australian -, and Japanese - market 2.6 L Astron engine helped introduce Mitsubishi's then - new Silent
Shaft balance shaft engine technology, which minimized the inherent vibration of a large four - cylinder in - line engine.
A unique oil pump and
balance shaft module keep the reciprocating assembly well - lubricated with a thicker geroter set for higher oil flow.
The use
of balance shafts, a rigidly mounted powertrain cradle, a well behaved 6 - speed automatic, and the aforementioned noise cancellation technology makes this the smart choice for the days of rising fuel prices that lie ahead.
The powerful four - cylinder engine features two
balance shafts rotating at twice the speed of the crankshaft for tremendous smoothness.
The three - cylinder engine is also free of first and second order inertial forces and roll torque, which is very small compared to the six - cylinder engine, is completely eliminated by the use of a
single balance shaft.
If you vehicle is slipping a bit when accelerating, that is not the engine's intake
counter balance shaft nor the engine's camshaft, but rather the transmission clutches are not pressurizing all the way or the clutches are worn.
Credit the counter-rotating
twin balance shafts, a new exhaust manifold that's now integrated into the cylinder head or a revised high - pressure fuel injection system, but Volkswagen's small turbodiesel four feels more sophisticated than ever.
This larger motor was based upon the original 2.2 Trans 4 motor, but with an increased stroke and the addition of twin,
counter-rotating balance shafts at the bottom of the engine, to help offset the inherent roughness of the larger engine.
The raspy Chrysler 2.0 - liter four - banger has been quieted by a Mitsubishi - built 2.4 - liter
with balance shafts and liquid - filled engine mounts.