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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
MotoGP Engine Configurations Comparison
MotoGP Engine Configurations Comparison
Published: 2017/04/08
Channel: MotoGP
Engine Layouts - Explained (V6, I6, V8, W12)
Engine Layouts - Explained (V6, I6, V8, W12)
Published: 2011/06/29
Channel: Engineering Explained
Configuration moteur "all day" 80cc derbi euro3
Configuration moteur "all day" 80cc derbi euro3
Published: 2017/10/24
Channel: ScootFast
Learn About Subaru Boxer Engine Technology
Learn About Subaru Boxer Engine Technology
Published: 2012/09/24
Channel: Richmond Hill Subaru
[HPA Q&A] Wideband sensors and V configuration engines | Best practice install advice
[HPA Q&A] Wideband sensors and V configuration engines | Best practice install advice
Published: 2017/11/29
Channel: High Performance Academy
Marine Engines - Configuration and Drive Units
Marine Engines - Configuration and Drive Units
Published: 2012/09/27
Channel: Stormforce
engine configuration motherf*cker
engine configuration motherf*cker
Published: 2015/03/30
Channel: ItWentChunkaCHUNK
Andrew Wenzel explains  4 Stroke Outboard Engine configuration
Andrew Wenzel explains 4 Stroke Outboard Engine configuration
Published: 2017/11/17
Channel: Peter Rhodes
Deneb principles. How to create a new engine configuration
Deneb principles. How to create a new engine configuration
Published: 2015/10/23
Channel: Atelgraphics
The Rotary Engine - History, Theory, Configuration, Construction
The Rotary Engine - History, Theory, Configuration, Construction
Published: 2011/01/17
Channel: gforce118118
UQx Hypers301x 1.7.1v Scramjet Engine Configuration
UQx Hypers301x 1.7.1v Scramjet Engine Configuration
Published: 2014/04/06
Channel: UQx Hypers301x Hypersonics
5-Stroke Engine - Configuration
5-Stroke Engine - Configuration
Published: 2011/04/25
Channel: 5-Taktmotor - Technik
engine configuration
engine configuration
Published: 2008/11/23
Channel: driivecom
Thorax  engine configuration
Thorax engine configuration
Published: 2011/02/24
Channel: IIIRotor
Kerbal Space Program | How to: Engine Configuration
Kerbal Space Program | How to: Engine Configuration
Published: 2014/10/05
Channel: Benjamin Magnus Games
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
Project Billet - Upper Engine / Inlet Manifold / Turbo Configuration
Project Billet - Upper Engine / Inlet Manifold / Turbo Configuration
Published: 2017/04/28
Channel: MRT Performance
ScrapeBox Harvester Engine Configuration
ScrapeBox Harvester Engine Configuration
Published: 2016/01/30
Channel: Colin Tippins
Neat engine configuration
Neat engine configuration
Published: 2009/04/02
Channel: thedopistshit
Andrew Wenzel of Honda explains 4-stroke outboard engine configuration
Andrew Wenzel of Honda explains 4-stroke outboard engine configuration
Published: 2017/11/19
Channel: Lifes Better with a Boat
► Bentley Factory - W12 Engine
► Bentley Factory - W12 Engine
Published: 2013/09/25
Channel: YOUCAR
Inline 4 Cylinder Engine Configuration 3d Rendering
Inline 4 Cylinder Engine Configuration 3d Rendering
Published: 2012/07/26
Channel: Revvolution.com
Engine Configuration | What is inline and V engine?
Engine Configuration | What is inline and V engine?
Published: 2016/12/08
Channel: Engine Engineer
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
V8 Engine Configuration 3d Rendering
V8 Engine Configuration 3d Rendering
Published: 2012/07/26
Channel: Revvolution.com
Boxer / Flat Engine Configuration 3d Rendering
Boxer / Flat Engine Configuration 3d Rendering
Published: 2012/07/26
Channel: Revvolution.com
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
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
BMC Remedy AR System - Centralized Configuration for Email Engine
BMC Remedy AR System - Centralized Configuration for Email Engine
Published: 2016/11/07
Channel: BMCdocs
Cisco 4500 with 8E supervisor engine configuration
Cisco 4500 with 8E supervisor engine configuration
Published: 2016/05/27
Channel: Samarth Singh
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
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
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.
TF - TOT - Great Engine Configuration Test
TF - TOT - Great Engine Configuration Test
Published: 2017/09/25
Channel: Tazilon Gaming
TF - TOT - Great Engine Configuration Test - Vol. 2
TF - TOT - Great Engine Configuration Test - Vol. 2
Published: 2017/09/26
Channel: Tazilon Gaming
TF- TOT - Great Engine Configuration Test - Vol. 8 Flat Test Results
TF- TOT - Great Engine Configuration Test - Vol. 8 Flat Test Results
Published: 2017/09/30
Channel: Tazilon Gaming
Angram Beer Engine Configuration and Finishes
Angram Beer Engine Configuration and Finishes
Published: 2013/12/02
Channel: UKBrewing
Carburetor Linkage Configuration On Tecumseh Lawnmower Engine
Carburetor Linkage Configuration On Tecumseh Lawnmower Engine
Published: 2012/08/27
Channel: donyboy73
Throttle Linkage Configuration On A Lawnmower With A Tecumseh Engine
Throttle Linkage Configuration On A Lawnmower With A Tecumseh Engine
Published: 2015/05/24
Channel: donyboy73
Neusoft Silta ENGINE Configuration
Neusoft Silta ENGINE Configuration
Published: 2015/10/22
Channel: Yimeng Niu
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
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
Configuration moteur 75cc "all day" pour Minarelli AM6
Configuration moteur 75cc "all day" pour Minarelli AM6
Published: 2017/07/29
Channel: ScootFast
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
TF - TOT - Great Engine Configuration Test - Vol. 3
TF - TOT - Great Engine Configuration Test - Vol. 3
Published: 2017/09/26
Channel: Tazilon Gaming
Throttle, Choke and Governor Configuration on Older Briggs and Stratton Engines
Throttle, Choke and Governor Configuration on Older Briggs and Stratton Engines
Published: 2014/05/26
Channel: Machinery Restorer
Alterian Engine AMC - Post Installation Configuration
Alterian Engine AMC - Post Installation Configuration
Published: 2016/11/11
Channel: Alterian Academy
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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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