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Car Tech 101: Understanding engine configurations
Car Tech 101: Understanding engine configurations
Published: 2015/02/10
Channel: CNET
11 Engine Configurations and Operating Systems
11 Engine Configurations and Operating Systems
Published: 2015/08/30
Channel: Kansow Training Guide
HowStuffWorks Videos -Car engine configuration and types
HowStuffWorks Videos -Car engine configuration and types
Published: 2012/07/03
Channel: Võ Văn Nhất
Engine Configuration and operating systems
Engine Configuration and operating systems
Published: 2017/05/12
Channel: Engineering Mania
5-Stroke Engine - Configuration
5-Stroke Engine - Configuration
Published: 2011/04/25
Channel: fuenftaktmotor
Duke Engines
Duke Engines
Published: 2012/07/19
Channel: nzbusiness
UQx Hypers301x 1.7.1v Scramjet Engine Configuration
UQx Hypers301x 1.7.1v Scramjet Engine Configuration
Published: 2014/04/06
Channel: UQx Hypers301x Hypersonics
Inline 4 Cylinder Engine Configuration 3d Rendering
Inline 4 Cylinder Engine Configuration 3d Rendering
Published: 2012/07/26
Channel: Revvolution.com
Alterian Engine AMC - Post Installation Configuration
Alterian Engine AMC - Post Installation Configuration
Published: 2016/11/11
Channel: Alterian Learning
Engine Essential Automation Configuration
Engine Essential Automation Configuration
Published: 2015/05/27
Channel: EmotionSystems
Engine Configuration | What is inline and V engine?
Engine Configuration | What is inline and V engine?
Published: 2016/12/08
Channel: Engine Engineer
engine configuration motherf*cker
engine configuration motherf*cker
Published: 2015/03/30
Channel: ItWentChunkaCHUNK
Neat engine configuration
Neat engine configuration
Published: 2009/04/02
Channel: thedopistshit
V8 Engine Configuration 3d Rendering
V8 Engine Configuration 3d Rendering
Published: 2012/07/26
Channel: Revvolution.com
Thorax  engine configuration
Thorax engine configuration
Published: 2011/02/24
Channel: IIIRotor
Project Billet - Upper Engine / Inlet Manifold / Turbo Configuration
Project Billet - Upper Engine / Inlet Manifold / Turbo Configuration
Published: 2017/04/28
Channel: MRT Performance
Boxer / Flat Engine Configuration 3d Rendering
Boxer / Flat Engine Configuration 3d Rendering
Published: 2012/07/26
Channel: Revvolution.com
engine configuration
engine configuration
Published: 2008/11/23
Channel: driivecom
Rolls Royce Merlin Engine test run with 2016 configuration
Rolls Royce Merlin Engine test run with 2016 configuration
Published: 2016/06/11
Channel: Historic Aero Engines
Formula 1 Turbo Engines - The Golden Era [Full Documentary]
Formula 1 Turbo Engines - The Golden Era [Full Documentary]
Published: 2014/09/16
Channel: RaceSpec
Kerbal Space Program | How to: Engine Configuration
Kerbal Space Program | How to: Engine Configuration
Published: 2014/10/05
Channel: Benjamin Magnus Games
Cisco 4500 with 8E supervisor engine configuration
Cisco 4500 with 8E supervisor engine configuration
Published: 2016/05/27
Channel: Samarth Singh
Deneb principles. How to create a new engine configuration
Deneb principles. How to create a new engine configuration
Published: 2015/10/23
Channel: Atelgraphics
How A Jet Engine Starts
How A Jet Engine Starts
Published: 2016/11/11
Channel: Boldmethod
Marine Engines - Configuration and Drive Units
Marine Engines - Configuration and Drive Units
Published: 2012/09/27
Channel: StormforceCoaching
Tuned Port Injection, 1989 Trans AM GTA Engine/Vehicle Configuration
Tuned Port Injection, 1989 Trans AM GTA Engine/Vehicle Configuration
Published: 2016/02/16
Channel: Rick K.
DMK Engine Configuration App for iPad - Seattle Boat Show
DMK Engine Configuration App for iPad - Seattle Boat Show
Published: 2015/01/27
Channel: Kevin Dolan
Angram Beer Engine Configuration and Finishes
Angram Beer Engine Configuration and Finishes
Published: 2013/12/02
Channel: UKBrewing
ScrapeBox Harvester Engine Configuration
ScrapeBox Harvester Engine Configuration
Published: 2016/01/30
Channel: Colin Tippins
ManageEngine Network Configuration Manager - Webinar - DeviceExpert
ManageEngine Network Configuration Manager - Webinar - DeviceExpert
Published: 2015/06/02
Channel: ACSoftware
MySQL for Beginners 007: Mysql Storage Engines and Configuration
MySQL for Beginners 007: Mysql Storage Engines and Configuration
Published: 2016/05/26
Channel: Cave of Programming
Neusoft Silta ENGINE Configuration
Neusoft Silta ENGINE Configuration
Published: 2015/10/22
Channel: Yimeng Niu
Sort Harvest Engines Of ScrapeBox  Harvest Engine Configuration File
Sort Harvest Engines Of ScrapeBox Harvest Engine Configuration File
Published: 2016/02/15
Channel: Colin Tippins
Carburetor Linkage Configuration On Tecumseh Lawnmower Engine
Carburetor Linkage Configuration On Tecumseh Lawnmower Engine
Published: 2012/08/27
Channel: donyboy73
BMW M4 / M3 Engine Inline 6 Configuration Reconfirmed by BMW NA CEO Ludwig Willisch
BMW M4 / M3 Engine Inline 6 Configuration Reconfirmed by BMW NA CEO Ludwig Willisch
Published: 2013/09/09
Channel: BIMMERPOST
Mesh movement in a 4-valve piston engine configuration (AVBP - CERFACS).
Mesh movement in a 4-valve piston engine configuration (AVBP - CERFACS).
Published: 2014/03/05
Channel: AVBP CERFACS
2015 DeShazer Beastie 3 - 2.4L Y-Configuration 3 Cylinder Engine - Walkaround - 2015 AIMExpo Orlando
2015 DeShazer Beastie 3 - 2.4L Y-Configuration 3 Cylinder Engine - Walkaround - 2015 AIMExpo Orlando
Published: 2016/02/16
Channel: AutoMotoTube
Fuel Line Configuration on Briggs and Stratton Professional 775 Series Engine
Fuel Line Configuration on Briggs and Stratton Professional 775 Series Engine
Published: 2013/07/28
Channel: ilike2mow
Kohler 17.5 HP Engine Carburetor Choke & Throttle Linkage Configuration
Kohler 17.5 HP Engine Carburetor Choke & Throttle Linkage Configuration
Published: 2013/04/01
Channel: donyboy73
Configuration cisco identity service engine  2.0
Configuration cisco identity service engine 2.0
Published: 2016/04/28
Channel: Secure Tech
2015 DeShazer Beastie 3 - 2.4L Y Configuration 3 Cylinder Engine - Walkaround - 2015 AIMExpo Orlando
2015 DeShazer Beastie 3 - 2.4L Y Configuration 3 Cylinder Engine - Walkaround - 2015 AIMExpo Orlando
Published: 2016/02/05
Channel: MotorCycleTube
Individual diesel engine configuration. A service of RAC Export Trading in Germany
Individual diesel engine configuration. A service of RAC Export Trading in Germany
Published: 2013/01/06
Channel: RAC Germany
6-7HP Tecumseh Vertical Engine Throttle & Choke Linkage Configuration
6-7HP Tecumseh Vertical Engine Throttle & Choke Linkage Configuration
Published: 2016/08/03
Channel: donyboy73
HDR Bloom Engine Configuration-Game Machine Visual Scripting-S2Engine HD
HDR Bloom Engine Configuration-Game Machine Visual Scripting-S2Engine HD
Published: 2016/06/30
Channel: Ahmad Karami
Engine advanced configuration
Engine advanced configuration
Published: 2014/12/05
Channel: EmotionSystems
Pervasive 10 Server Engine Install & Configuration for EDC RC™ Software
Pervasive 10 Server Engine Install & Configuration for EDC RC™ Software
Published: 2010/02/09
Channel: docudata
Draw Shadows Engine Configuration-Game Machine Visual Scripting Language-S2Engine HD
Draw Shadows Engine Configuration-Game Machine Visual Scripting Language-S2Engine HD
Published: 2016/07/03
Channel: Ahmad Karami
HOW-TO Adjust The Engine Speed On A Generator With Tecumseh Engine & Throttle Linkage Configuration
HOW-TO Adjust The Engine Speed On A Generator With Tecumseh Engine & Throttle Linkage Configuration
Published: 2015/08/14
Channel: donyboy73
Can Am Spyder F3S -  three wheel configuration and strong engine
Can Am Spyder F3S - three wheel configuration and strong engine
Published: 2016/04/03
Channel: SOME WONDERFUL
2012 Impala 3.6L cylinder configuration
2012 Impala 3.6L cylinder configuration
Published: 2016/02/15
Channel: youroam1
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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Engine configuration is an engineering term for the layout of the major components of a reciprocating piston internal combustion engine. These components are the cylinders and crankshafts in particular but also, sometimes, the camshaft(s).

Many apparently 'standard' names for configurations are historic, arbitrary, or overlapping. For example, the 180° V engine is so named because the crankshaft is related to a V engine more closely than it is related to other opposed-piston engines such as the boxer. Others would consider it a flat engine because of its shape.

The names W engine and rotary engine have each been used for several unconnected designs. The H-4 and H-6 engines produced by Subaru are not H engines at all, but boxer engines. The Subaru H-4 and H-6 designs are so named because they are horizontally opposed pistons.

Categorisation by piston motion[edit]

Engine types include:

The standard names for some configurations are historic, arbitrary, or both, with some overlap. For example, the cylinder banks of a 180° V engine do not in any way form a V, but it is regarded as a V engine because of its crankshaft and big end configuration, which result in performance characteristics similar to a V engine. But it is also considered a flat engine because of its shape. On the other hand, some engines which have none of the typical V engine crankshaft design features and consequent performance characteristics are also regarded as V engines, purely because of their shape. Similarly, the Volkswagen Group VR6 engine is a hybrid of the V engine and the straight engine, and can not be definitively labeled as either.

Other categorizations[edit]

By valve placement[edit]

The majority of four stroke engines have poppet valves, although some aircraft engines have sleeve valves. Valves may be located in the cylinder block (side valves), or in the cylinder head (overhead valves). Modern engines are invariably of the latter design. There may be two, three, four or five valves per cylinder, with the intake valves outnumbering the exhaust valves in case of an odd number.

By camshaft placement[edit]

Poppet valves are opened by means of a camshaft which revolves at half the crankshaft speed. This can be either chain, gear or toothed belt driven from the crankshaft, and can be located in the crankcase (where it may serve one or more banks of cylinders) or in the cylinder head.

If the camshaft is located in the crankcase, a valve train of pushrods and rocker arms will be required to operate overhead valves. Mechanically simpler are side valves, where the valve stems rested directly on the camshaft. However, this gives poor gas flows within the cylinder head as well as heat problems and fell out of favor for automobile use, see flathead engine.

The majority of modern automobile engines place the camshaft on the cylinder head in an overhead camshaft (OHC) design. There may be one or two camshafts in the cylinder head; a single camshaft design is called single overhead camshaft (SOHC). A design with two camshafts per cylinder head is called double overhead camshaft (DOHC). Note that the camshafts are counted per cylinder head, so a V engine with one camshaft in each of its two-cylinder heads is still an SOHC design, and a V engine with two camshafts per cylinder head is DOHC, or informally a "quad cam" engine.[1][2]

With overhead camshafts, the valvetrain will be shorter and lighter, as no pushrods are required. Some overhead camshaft designs still have rocker arms; this facilitates adjustment of mechanical clearances.

A four valves per cylinder design usually has two valves for intake and two for exhaust, which requires two camshafts per cylinder bank. If there are two camshafts in the cylinder head, the cams can sometimes bear directly on cam followers on the valve stems (tappets). The cam followers aid in noise reduction, dampened vibration, shock absorption and the carrying of axial load.[3][4] This latter arrangement is the most inertia free, allows the most unimpeded gas flows in the engine and is the usual arrangement for high performance automobile engines. It also permits the spark plug to be located in the center of the cylinder head, which promotes better combustion characteristics. Beyond a certain number of valves, the effective area covered decreases, so four is the common-most number. Odd numbers of valves necessarily means the intake or exhaust side must have one valve more. In practice this is invariably the intake valves - even in even-numbered head designs, inlet valves are often larger in size than exhaust.

Very large engines (e.g. marine engines) can have either extra camshafts or extra lobes on the camshaft to enable the engine to run in either direction. Furthermore, other manipulations of valves can be used for e.g. engine braking, such as in a Jake brake.

A disadvantage of overhead cams is that a much longer chain (or belt) is needed to drive the cams than with a camshaft located in the cylinder block, usually a tensioner is also needed. A break in the belt may destroy the engine if pistons touch open valves at top dead center.

References[edit]

  1. ^ "Camshaft Basics". www.oregoncamshaft.com. Retrieved 2016-02-05. 
  2. ^ "OHV, OHC, SOHC and DOHC (twin cam) engine - Automotive illustrated glossary". Samarins.com. Retrieved 2016-02-05. 
  3. ^ "How Car Engines Work". HowStuffWorks. Retrieved 2016-02-05. 
  4. ^ "Cam Follower Bearings On Emerson Bearing". products.emersonbearing.com. Retrieved 2016-02-05. 

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