A technique used to prevent the onset of knock is the high " swirl " engine that forces the intake charge to adopt a very fast circular rotation in the cylinder during compression that provides quicker and more complete combustion.

Normally, both are charged from a single alternator, and a heavy-duty split-charge diode is used to prevent the higher-charge battery ( typically the engine battery ) from discharging through the lower-charge battery when the alternator is not running.

In 1893 he described a " slow-combustion engine " that first compressed air thereby raising its temperature above the igniting-point of the fuel, then gradually introducing fuel while letting the mixture expand " against resistance sufficiently to prevent an essential increase of temperature and pressure ", then cutting off fuel and " expanding without transfer of heat ".

Increasing the compression ratio in a spark-ignition engine where fuel and air are mixed before entry to the cylinder is limited by the need to prevent damaging pre-ignition

The inner and outer surfaces of the firewall are often coated with NVH-absorber to prevent most engine noise from reaching the passenger compartment.

If at least 50 cars had been built, sportscars like the GT40 and the Lola T70 were allowed, with a maximum of 5. 0 L. John Wyer's revised 4. 7 litre ( Bored to 4. 9 litres, and o-rings cut and installed between the deck and head to prevent head gasket failure, a common problem found with the 4. 7 engine.

; Reliability: As multiple unit trains have multiple engines, the failure of one engine does not prevent the train from continuing its journey.

Cutting of cylinders using ignition switches had the drawback of allowing fuel to continue to pass through the engine, causing the spark plugs to oil up and prevent the engine from restarting.

There are also emerging concerns about " search engine spamming ", which prevent major search engines from publishing their ranking algorithms.

If " carb-icing " is an issue, plenty of waste engine heat is available to prevent trouble.

For open throttle operation a richer mixture will produce more power, prevent pre-ignition detonation, and keep the engine cooler.

The engine had a flush-activated 179 Fuel Injected engine that would act as a drainer to push water out and prevent the engine from flooding.

This, combined with the inevitable small amount of ' leakage ' of combustion gases past the pistons leads to a positive pressure in the crankcase which must be removed in the interests of engine efficiency and to prevent oil and gas leaks as the pressure tries to escape.

* Reliability — As there are multiple engines, or motors, the failure of one engine does not prevent the train from continuing its journey.

Since the transom may need to be cut down for the engine to fit properly, an engine well should be used to prevent low waves from splashing over the transom and flooding the boat.

Additionally, care had to be taken to retard the spark in order to prevent backfiring ; with an advanced spark setting, the engine could kick back ( run in reverse ), pulling the crank with it, because the overrun safety mechanism works in one direction only.

For normal use, the selection of a spark plug heat range is a balance between keeping the tip hot enough at idle to prevent fouling and cold enough at maximum power to prevent pre-ignition or engine knocking.

' There was an additional engine filter to prevent damage from sand which caused a loss in power, a common occurrence in North Africa, since filter-less engines could be damaged after only a few hours use.

The game was very close, and in the fourth quarter Walsh called a series of running plays as the 49ers marched down the field against the Cowboys prevent defense, which had been expecting the 49ers to mainly pass.

They would also cause extremely rapid proton decay ( far below current experimental limits ) and prevent the gauge coupling strengths from running together in the renormalization group.

For example, if a team is down by a field goal with only seconds remaining, a quarterback may spike the ball to prevent the game clock from running out.

Tolling will prevent the time for filing suit from running while the condition exists.

Miami's defenders had also drilled in maintaining precise pursuit angles on sweeps to prevent the cut-back running that Duane Thomas had used to destroy the Dolphins in Super Bowl VI.

This will prevent any interrupt service routines from running ( effectively preventing a process from being preempted ).

On the user interface front, it did not prevent screensavers from running during playback, it did not support file drag-and-drop, nor did it support playlists.

Wilson describes Fort as " a patron of cranks " and also argues that running through Fort's work is " the feeling that no matter how honest scientists think they are, they are still influenced by various unconscious assumptions that prevent them from attaining true objectivity.

Its data structures are the same as those used by Windows for VFAT long filenames, and it does not require running a synchronization utility in order to prevent Windows and Linux data structures from becoming disjoint.

In addition, frequent grade reversals prevent water from running down the trail, make the trail more fun and interesting to ride, and generally help keep bike speeds down, providing a more safe trail experience for all users.

On August 7, 1980 Viking 1 Orbiter was running low on attitude control gas and its orbit was raised from 357 × 33943 km to 320 × 56000 km to prevent impact with Mars and possible contamination until the year 2019.

Fortunately, efforts made to prevent polluting ground water in the region, coupled with the natural regenerative effects of the running water, have largely restored the cave to a pristine condition.

In an interview with Al Jazeera in 2009 Bouterse said that the trial is being used by his political opponents to prevent him from running for office again and for their own political gain.

However the game is mission orientated and involves setting up a futuristic base and carrying out missions which involve mining minerals, developing relationships, harvesting resources to prevent running out of oxygen and power, collecting food, and fighting back alien attacks.

She has to fight back alien attacks and try to rescue Space Colony's hard-working Scandinavian biker Stig, plus she has to prevent running out of oxygen.

After a series of running battles, Mosley agreed to abandon the march to prevent bloodshed.

To prevent possible bias from the person running the test, the blind test may be done so that this person is also unaware of the component under test.

Monitors using this technology have one or more thin tungsten wires running horizontally across the grille to prevent this.

* Low-water cutoff: It is a mechanical means ( usually a float switch ) that is used to turn off the burner or shut off fuel to the boiler to prevent it from running once the water goes below a certain point.

To prevent running into hurdles with the Soviet government, he joined the Communist Party in 1970.

The stated purpose of the fence is to prevent children and house pets from running into the busy thoroughfare but some have contended that it was built to keep residents of the working-class Park Extension neighbourhood out of the town.

Ike renamed the song's backing female trio to The Ikettes and also gave " Little Ann " the name " Tina Turner " to rhyme with his favorite television character, Sheena the Queen of the Jungle, and also gave her the name to prevent her from running off with it, in case Ann left, he could give another woman the name of Tina Turner.

The term " middle class " is first attested in James Bradshaw's 1745 pamphlet Scheme to prevent running Irish Wools to France.