Sentences with phrase «under some engine load»

Under some engine load conditions, ported vacuum may equal manifold vacuum, but it can never exceed it.

Not exact matches

More exhaust is needed when the engine is under heavy load, less under a light load.

The researchers addressed the daunting challenge of designing a catalyst that could endure engine exhaust temperatures of up to nearly 1,500 degrees Fahrenheit encountered under high engine loads.

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The reason it happens every couple of seconds is that, on small cars, the computer often will turn the compressor off when the engine is under load in order to save power.

It would typically be evident during steady engine speeds, or especially noticeable under the load of acceleration, which is not what you described.

In some cases, you may not hear rod knock unless the engine is under load or the engine RPM is increased.

But then there are other issues surrounding the brakes, which under light loads become difficult to modulate smoothly; the steering, which suffers from kickback on rougher surfaces; and even the engine noise, which is always very loud indeed, can't be dialled back in any way, and has a lack of refinement to it in the mid-range that, again, you simply never notice on the track.

Featuring an uprated version of the Mercedes - AMG sourced M158 V12 bi-turbo engine, the Huayra Roadster produces 753bhp and «over» 738 lb ft of torque, with the turbos re-engineered to provide more immediate throttle response while dry sump lubrication should keep the motor responsive even under extreme lateral loads.

I had similar symptoms in my»97 Civic: ran great when cold, tough to start when engine was hot, engine would stall under load (getting going from a stop), but would also have an intermittent rough idle.

Go back and redo your voltage test (still with the engine on), a voltage reading of 13.0 or higher indicates your alternator is still supplying a full charge while under heavy load.

The direct injection that prevails when the engine is started and under high load works to a different rhythm than the darker and deeper voice of the indirect injection that's active under part - throttle operating conditions.

Now making 440 hp and 406 lb - ft of torque (increases of 20 hp and 22 lb - ft, respectively), the engine is refreshingly responsive and smooth, even under heavy loads and at high rpm.

The purpose of this is to prevent damage associated from hot spots which can be created when an engine has been under load.

The engine is the biggest news, with 414bhp and 406 lb ft on tap and able to run as a V4 under light loads by keeping the other four cylinders» inlet valves shut.

A couple that come to mind are the volume or air / fuel mixture (Why timing is advanced when under less load / higher vacuum) and air / fuel ratio (why timing is pulled when the engine is cold).

Either a little lift or prod of the throttle depending on the situation can have the rear of the car moving, and such is the beautiful poise of the V8 Vantage with its engine tucked all the way back up under the dash that it feels like an easy, fluid transition of the load from front to rear.

Just before the exhaust takes over there's a hint there's going to be some growly induction noise when the engine is under load, but the shouty exhaust cuts in and you can't hear anything else.

The engine feels almost a bit too much for the layout, and under full load a hurricane of gases blasts out of the twin tailpipes.

IMHO it depends on the journey you are doing though - if you've just pulled straight off a long motorway run, it's worth letting it run for a minute or so, but if the last few minutes of your journey were pottering slowly through a busy residential area, it's probably not needed, as the engine has been under little load for a while, and so will have cooled somewhat already.

Blame goes to the transmission that — because of its infinite amount of ratios — keeps the engine running a high revs when under load on the highway; the Cruze uses the same engine but doesn't sound nearly as bad thanks to its six - speed transmissions.

Then, there's a hybrid mode which uses the 918 Spyder's V - 8 engine in combination with the car's electric motors like a traditional hybrid, with the engine shutting off under light loads.

The engine operates in SPCCI mode the majority of the time, can switch into an ultra-lean burn mode during low revs and low load cruising (which, because of controlled, lower combustion temperatures, doesn't produce high levels of NOx like previous lean burn engines), and graduates to regular spark ignition under high load and high revs.

First, I think you're changing gear way to early if you're changing up from 3rd to 4th at 2000rpm, especially when the engine is under load.

Under higher loads and at the higher band of rpm, spark ignition seamlessly takes over from SPCCI, resulting in the feeling of a turbocharged engine that is falling out of its power band at the top end.

There's just a hint of distant thrumming under road load, like the slow - turning, big - inch engines in an ocean - going ship.

There is a difference when the engine is under load, for one, it heats up more.

To save gas, the V - 8 incorporates cylinder - deactivation technology, which automatically — and unobtrusively — shuts down half of the engine's cylinders under light loads.

The two headline changes are the addition of variable displacement (allowing the engine to cruise on four cylinders under light loads) and variable valve timing, which lowers the peak torque rpm.

An incorrect idle AFR can result in backfiring under close throttle high RPM operations of an engine, especially under load and deceleration.

My 2003 Zetec has been through four tensioners so far, and when they go they rattle hard when the engine is under load.

The engine will adopt a lower compression ratio under hard acceleration or heavy loads to allow the turbocharger to deliver maximum boost, and move to a higher compression ratio on light throttle to allow for fuel - efficient lean - burn running.

That's still a decent return for the warm - hatch vibe the Fiesta gives off, though, and the EcoBoost engine belies its short cylinder count with ample refinement at speed and keen vocals under load.

The engine also has the ability to shut down four cylinders under light load, and while the in - cluster display indicates when that happens, it is otherwise not discernable.

The engine is also fitted with a cylinder deactivation system, which switches off cylinders two, three, five, and eight under partial load to save a few drops of fuel.

Although this smaller - displacement turbo four - cylinder has lower internal friction and reduced pumping loss than a Skyactiv V - 6 would, fuel efficiency drops when the engine is under high load, as the engine runs richer to help keep the cylinders cooler.

Also, while lean burn is desirable under low load conditions, when the engine is developing power, stoich is desirable, is what I was getting at.

Either condition may result in detonation when the engine is under heavy load or accelerating hard.

But under full load, the quad - tip stainless steel dual exhaust yells indignantly as the little engine shrieks painfully.

Under full load at higher engine speeds in eight - cylinder mode, both flaps are fully opened so that the occupants are able to enjoy the decidedly muscular sound typical of an AMG V8.

Near - silent at idle, the engine emits a beautifully rich and throaty roar at full throttle, thanks in part to a movable element in the exhaust system that imparts an edgier character to the sound under higher load conditions.

Under low - load scenarios, the 1.5 - litre turbo engine will effectively cut down to a 1.0 - litre 2 - cylinder turbo motor to reduce fuel consumption and emissions.

Then there is the issue of fresh air, because the engine and brakes must not be allowed to overheat even under full load.

Made from CFRP, this component feeds the engine's torque from the gearbox to the rear differential and works under extremely heavy loads — especially in high - performance vehicles.

This, in turn, means a significant increase in all - round efficiency, with fuel consumption down by up to 15 per cent under full load despite the increase in engine output.

The engineers need to channel the air around the car to create the best possible platform for dynamic excellence, while also ensuring the engine, powertrain and brakes receive the requisite cooling even when operating under heavy loads on the race track.

Get excited about the 2018 Land Rover Discovery HSE Under the hood you'll find a 6 cylinder engine with more than 300 horsepower, and load leveling rear suspension maintains a comfortable ride.

This engine features Chevy's Active Fuel Management system, which cuts power from eight to four cylinders under light - load situations.

If the engine RPM's raise and speed does not match especially under loaded acceleration or in higher gears, this is the first indication of a worn clutch disc.

Until that temperature is reached, the engine is more susceptible to damage at high revs or under load.