Search results

• Machine
  ...require some energy source ("input") and always accomplish some sort of [[mechanical work|work]] ("output"). Devices with no rigid moving parts can be conside ...e is the ratio of the [[actual mechanical advantage]] (AMA) to the [[ideal mechanical advantage]] (IMA). Functioning physical machines are always less than 100%
  4 KB (541 words) - 10:25, 15 July 2009
• Cylinder head
  ...[[poppet valve|valve]]s and [[spark plug]]s. In a [[flathead engine]], the mechanical parts of the valve train are all contained within the block, and the head i ...lesser extent the exhaust) determines a major portion of the [[volumetric efficiency]] and [[compression ratio]] of the engine.
  3 KB (415 words) - 23:56, 20 September 2009
• Rotary combustion engine
  ...ion of the piston with its inherent vibration and rotational-speed-related mechanical stress. As of 2005 the Wankel engine is the only successful pistonless rota * Mechanical simplicity.
  7 KB (1,137 words) - 20:22, 22 September 2009
• Bandini 1000 Turbo
  ...based on the design, characteristics and suspension systems that guarantee efficiency, soundness and stability, along with that proverbial light for almost half * [[Suspension (mechanical) | Suspensions]]:
  6 KB (820 words) - 22:29, 23 September 2009
• Electric car
  ...ple mechanical construction. Electric motors often achieve 90% conversion efficiency over the full range of speeds and power output and can be precisely control ...al-mechanical process already discussed. This is due to the higher carnot efficiency through directly oxidising the fuel and by avoiding several unnecessary ene
  9 KB (1,323 words) - 08:15, 8 October 2009
• Supercharger
  ...containing air that is forced into the cylinders improves the [[volumetric efficiency]] of the engine which allows the engine to burn more [[fuel]] and makes it ===Mechanical drive and exhaust gas driven===
  15 KB (2,335 words) - 22:54, 14 June 2009
• Continuously variable transmission
  ...r CVT transfers torque to the transmission output. The gear set acts as a mechanical adding machine to subtract one speed from the other, allowing the car to go ...VT uses [[pulley]]s, typically connected by a metal-covered rubber [[belt (mechanical)|belt]].
  12 KB (1,878 words) - 23:28, 3 July 2009
• Power steering
  ...s. As long as there is pressure in the car's hydraulic system, there is no mechanical connection between the steering wheel and the road wheels. This system was In the event of component failure, a mechanical linkage such as a [[rack and pinion]] serves as a back-up in a manner simil
  5 KB (838 words) - 22:52, 11 June 2009
• Engine
  ...and "[[speech synthesis|text-to-speech engine]]" are common. The earliest mechanical computing device was called the [[difference engine]]; Military devices suc ...ecent usage, the term is typically used to describe devices that perform [[mechanical work]], follow-ons to the original steam engine. In most cases the work is
  9 KB (1,353 words) - 00:51, 9 August 2009
• Camshaft
  ...to an estimated 25% of an engine's total output at idle, reducing overall efficiency. Two approaches have been tried to reclaim this "wasted" energy but have p
  4 KB (658 words) - 19:44, 31 March 2009
• Bicycle gearing
  ...' on a [[bicycle]] is the selection of appropriate gear ratios for optimum efficiency or comfort. Different gears and ranges of gears are appropriate for differe ...mechanics)|transmission]]s, the [[gear ratio]] is closely related to the [[mechanical advantage]] of the drivetrain of the bicycle. On [[single-speed bicycle]]s
  24 KB (3,509 words) - 23:29, 3 July 2009
• Marine engine
  ...and "[[speech synthesis|text-to-speech engine]]" are common. The earliest mechanical computing device was called the [[difference engine]]; Military devices suc ...ecent usage, the term is typically used to describe devices that perform [[mechanical work]], follow-ons to the original steam engine. In most cases the work is
  9 KB (1,383 words) - 00:47, 4 March 2009
• Powertrain
  ...tion]] technology has focused on de-throttling (in part load where the low efficiency of [[Otto engine]]s is defined) and downsizing (lower displacement, EVC). ...w combustion concepts. These promise to combine clean combustion with high efficiency. So-called "combined combustion systems" (CCV) ([[Volkswagen]], [[2003]]) o
  5 KB (662 words) - 08:03, 8 October 2009
• Ignition system
  ===Mechanical ignition=== ...ons per minute]] (RPM) and/or increased [[manifold vacuum]], giving better efficiency. This system was used almost universally until the late 1970s, when electro
  15 KB (2,376 words) - 14:22, 24 September 2009
• Pushrod engine
  ...operated by pushing directly up on it, as opposed to needing some sort of mechanical arrangement to push the valves down. It may also lead to slightly easier co Due to the heating and efficiency problems, L-head engines fell from high power uses such as [[aircraft engin
  10 KB (1,635 words) - 08:54, 4 August 2009
• Automatic transmission
  ...missions have significantly improved in their ability to support high fuel efficiency but [[manual transmission]]s are still generally more efficient. (This bala ...device connecting the engine and the transmission. It takes the place of a mechanical [[clutch]], allowing the engine to remain running at rest without stalling.
  18 KB (2,740 words) - 23:27, 3 July 2009
• Hybrid vehicle drivetrain
  ...ic motors instead of being attached to the combustion engine. This allows efficiency gains as the accessories can run at a constant speed, regardless of how fas ...o be fitted with a [[supercapacitor]] or a [[flywheel]], which can improve efficiency by minimizing the losses in the battery.
  22 KB (3,527 words) - 09:10, 7 October 2009
• Fully-automatic transmission
  ...missions have significantly improved in their ability to support high fuel efficiency but [[manual transmission]]s are still generally more efficient. (This bala ...device connecting the engine and the transmission. It takes the place of a mechanical [[clutch]], allowing the engine to remain running at rest without stalling.
  14 KB (2,055 words) - 09:04, 8 October 2009
• Front wheel drive
  ...ndary [[Mini]] of [[1959]] (even if [[Saab 92]] predates it) although its mechanical layout differed from modern vehicles, since the transmission was built into * Packaging efficiency: the [[powertrain]] is a single unit contained in the engine compartment of
  10 KB (1,565 words) - 10:51, 8 October 2009
• Transmission
  ...r '''gearbox''' is the [[gear]] and/or [[hydraulic]] system that transmits mechanical [[power (physics)|power]] from a [[prime mover]] (which can be an [[engine] ...useable lower speed with higher torque, or do the opposite and provide a [[mechanical advantage]] (i.e increase in torque) to allow higher forces to be generated
  12 KB (1,865 words) - 06:22, 26 September 2016
• Electric vehicle
  ...re mechanically very simple. Electric motors often achieve 90% conversion efficiency over the full range of speeds and power output and can be precisely control ...force. This allows for almost no rolling resistance of the vehicle and no mechanical wear and tear of the train or track. Note that the levitation and the forwa
  18 KB (2,741 words) - 15:59, 24 June 2009
• Ferrari 360 Challenge
  ...ng in at just 20kg more than the Challenge, it features a host of aero and mechanical refinements that combine to make it 3.5 seconds faster around Fiorano than ...ining the rear wheels and contributing significantly to improving the cars efficiency and balance. Additional downforce is generated at the back by a subtly re-p
  4 KB (674 words) - 08:58, 4 August 2009
• Air filter
  There are four main types of mechanical air filter media: paper, foam, synthetics, and cotton. ...epartment of Energy]] advises that "[Air] Filtration should have a Minimum Efficiency Reporting Value ([[MERV]]) of 13 as determined by ASHRAE 5.2.2-1999." Ther
  10 KB (1,545 words) - 23:21, 2 October 2009
• Four stroke cycle
  ...'' helping to draw the intake charge into the cylinder. In order to retain efficiency, however, the exhaust valve must be closed soon enough so that too much fue ...asses to exhaust them from the cylinder is reduced, resulting in increased efficiency.
  12 KB (1,944 words) - 22:56, 14 June 2009
• Ceramic
  ...th [[strontium titanate]]) displays [[ferroelectricity]], meaning that its mechanical, electrical, and thermal responses are coupled to one another and also hist ...impart [[transformation toughened ceramics|transformation toughening]] for mechanical applications; most ceramic knife blades are made of this material.
  17 KB (2,553 words) - 18:50, 19 July 2009
• Turbo
  ...pression pressure and to prevent [[engine knocking]]) which reduces engine efficiency when operating at low power. This disadvantage does not apply to specifical ...intake air above atmospheric pressure, greatly increasing the [[volumetric efficiency]] beyond that of [[naturally-aspirated engine]]s. A turbocharger also has a
  20 KB (3,092 words) - 23:47, 7 August 2009
• Pistonless rotary engine
  ...ion of the piston with its inherent vibration and rotational-speed-related mechanical stress. [[As of 2005]] the [[Wankel engine]] is the only successful pistonl * Mechanical simplicity.
  10 KB (1,627 words) - 08:32, 2 October 2009
• Four-stroke
  ...flow in this way is called ''scavenging''. The disadvantage is lower fuel efficiency owing to the loss of fresh mixture into the exhaust port which can, however Accomplishing maximum [[volumetric efficiency]] for a given engine is not a formulaic process. Different intake and exha
  11 KB (1,765 words) - 11:04, 10 November 2005
• Four-stroke cycle
  ...flow in this way is called ''scavenging''. The disadvantage is lower fuel efficiency owing to the loss of fresh mixture into the exhaust port which can, however Accomplishing maximum [[volumetric efficiency]] for a given engine is not a formulaic process. Different intake and exha
  11 KB (1,775 words) - 09:48, 2 August 2009
• Front-wheel drive
  ...cy: the direct connection between engine and transaxle reduce the mass and mechanical [[inertia]] of the drivetrain compared to a rear-wheel drive vehicle with a * Assembly efficiency: the powertrain can be often be assembled and installed as a unit, which al
  12 KB (1,842 words) - 23:38, 7 August 2009
• Cam in block
  ...operated by pushing directly up on it, as opposed to needing some sort of mechanical arrangement to push the valves down. It may also lead to slightly easier co Due to the heating and efficiency problems, L-head engines fell from high power uses such as [[aircraft engin
  11 KB (1,698 words) - 08:59, 8 October 2009
• Four-cylinder
  ...drogen is light and therefore has a higher specific energy, the volumetric efficiency is still roughly five times lower than petrol. This is why hydrogen must be ...]]. A "motor" (from Latin ''motor'', "mover") is any machine that produces mechanical [[Power (physics)|power]]. Traditionally, [[electric motor]]s are not refer
  22 KB (3,344 words) - 22:07, 11 August 2009
• Bandini 750 sport siluro
  ...per [[Rod (mechanical) | cylinder]] in a single block and [[Distribution (mechanical) | distribution]] [[SOHC]] gear; constituted a good basis for processing Ba ...l) | pistons]] the [[camshaft | camshafts]], the pump of oil and [[Stroke (mechanical) | race]] that was brought to 59 [[mm]], to have a [[engine capacity]] ≈
  15 KB (2,094 words) - 15:39, 3 June 2010
• Pushrod
  ...o the fact that displacement is somewhat related to the emissions and fuel efficiency of an automobile. This has given OHC engines a regulatory advantage in tho ...neumatic valve springs]]. High-revving pushrod engines are normally solid (mechanical) lifter designs, flat and roller. In 1969, [[Chevrolet]] offered a Corvette
  8 KB (1,302 words) - 08:11, 14 June 2009
• Cam-in-block
  ...operated by pushing directly up on it, as opposed to needing some sort of mechanical arrangement to push the valves down. It may also lead to slightly easier co Due to the heating and efficiency problems, L-head engines fell from high power uses such as [[aircraft engin
  11 KB (1,817 words) - 11:16, 30 January 2011
• Fuel injection
  :*fuel efficiency ...d (common with EFI), less fuel is needed for the same power output. Engine efficiency is known as the [[BSFC]] (brake specific fuel consumption). When cylinder-t
  35 KB (5,222 words) - 08:19, 11 June 2009
• Horsepower
  ...und-force|lbf]]·[[minute|min]]⁻¹. This is sometimes called a ''mechanical'' horsepower to distinguish it from the other definitions of horsepower bel ...engine]]s in the [[19th century]] but is misleading because the mechanical efficiency of an engine means that the actual power output may be only 70% to 90% of t
  15 KB (2,360 words) - 12:18, 8 October 2009
• Internal combustion engine
  ...igned an indirect-acting free-piston compression-less engine whose greater efficiency won the support of [[Langen]] and then most of the market, which at that ti ...on electrical systems that also control the combustion process to increase efficiency and reduce emissions.
  40 KB (6,068 words) - 09:48, 2 August 2009
• Turbocharger
  ...pression pressure and to prevent [[engine knocking]]) which reduces engine efficiency when operating at low power. This disadvantage does not apply to specifical ...intake air above atmospheric pressure, greatly increasing the [[volumetric efficiency]] beyond that of [[naturally-aspirated engine]]s. A turbocharger also has a
  19 KB (3,049 words) - 13:22, 8 October 2009
• Ferrari F2002
  ...for great advancement in the bodywork and increasing the car's aerodynamic efficiency at the rear. ...cheducle and initially did not represent the same performance gains as the mechanical engineering. Thus Ferrari continued its design for another two months and o
  6 KB (896 words) - 00:39, 11 April 2011
• Gull-wing door
  ...[[convertible]] version of the car virtually impossible since, for optimal efficiency, the hinges must be placed as close to the center of the car as possible. ...o combine the advantages of all the designs, though with considerably more mechanical complexity.
  7 KB (1,020 words) - 09:25, 7 October 2009
• Internal-combustion engine
  ...drogen is light and therefore has a higher specific energy, the volumetric efficiency is still roughly five times lower than petrol. This is why hydrogen must be ...]]. A "motor" (from Latin ''motor'', "mover") is any machine that produces mechanical [[Power (physics)|power]]. Traditionally, [[electric motor]]s are not refer
  20 KB (3,085 words) - 13:24, 8 October 2009
• Hybrid vehicles
  ...icle because the engine is smaller and may be run at speeds providing more efficiency. ...mixed national origin; generally, a [[Europe]]an car fitted with American mechanical components. This meaning has fallen out of use. In the [[import scene]], hy
  64 KB (9,873 words) - 22:35, 14 June 2009
• Bicycle brake systems
  ...by [[Shimano]] in the early 1990s) and these brakes also offer a higher [[mechanical advantage]]. Dual-pivot brakes have slightly higher weight than convention ...ined and do not require a separate cable stop. However due to their higher mechanical advantage, the brake pads must be positioned very close to the rim. Also se
  26 KB (4,406 words) - 08:46, 12 September 2009
• Compression ratio
  ...cal energy from a given mass of air-fuel mixture due to its higher thermal efficiency. High ratios place the available oxygen and fuel molecules into a reduced s ...ngine knocking]], also known as detonation and this can reduce an engine's efficiency or even physically damage it.
  16 KB (2,479 words) - 14:53, 25 September 2009
• Pagani Huayra
  ...ateral radiators are positioned in the front to guarantee the best cooling efficiency of the intercoolers placed over the cylinder heads. Dry sump lubrication en ...ste of excessive fuel being transported and heated in the fuel lines. This efficiency combined with a large 85 liter fuel tank ensure Huayra’s grand touring ab
  17 KB (2,787 words) - 18:29, 10 March 2011
• Ferrari 458 Italia
  ...els. The car’s exterior styling and features were designed for aerodynamic efficiency, producing a [[downforce]] of 140 kg at 124 mph. In particular, the f ...ve a new car. All other cars will be modified, replacing the adhesive with mechanical fasteners.
  7 KB (1,002 words) - 20:16, 7 February 2011
• Liquid fuels
  ...mbustible or energy-generating molecules that can be harnessed to create [[mechanical energy]], usually producing [[kinetic energy]]; they also must take the sha ...ion process for renewable butanol emits a foul odour. It also doesn't help efficiency that the Weizmann organism can only tolerate butanol levels of up to 7% or
  9 KB (1,392 words) - 09:42, 8 October 2009
• Sleeve valve
  ...parts that open the valve. Some claim the spring loads also cause simple mechanical losses (the cam has to push against the spring to open the valve), but the ...at very large port openings can be arranged that increase the [[volumetric efficiency]] of the cylinder and the [[combustion chamber]] formed with the sleeve at
  9 KB (1,597 words) - 08:25, 8 October 2009
• Motor oil
  ...ars away the contacting surfaces of those parts, which could lead to lower efficiency and wearing out of the motor. ...d up. The motor oil and especially the additives also undergo thermal and mechanical degradation. For these reasons, the oil and the oil filter need to be peri
  19 KB (3,054 words) - 08:52, 8 October 2009

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