INTERNAL COMBUSTION ENGINE CONCEPT Teknik Kendaraan Ringan Semester 1 nd Class X Dasar Kompetensi Kejuruan SK-KD 1 TH.

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Presentation transcript:

INTERNAL COMBUSTION ENGINE CONCEPT Teknik Kendaraan Ringan Semester 1 nd Class X Dasar Kompetensi Kejuruan SK-KD 1 TH

DIAGRAM ALUR PENCAPAIAN KOMPETENSI

Classification of Engines Teknologi dan Rekayasa External vs Internal Combustion Spark Ignition SI or Compression Ignition CI Configuration Valve Location 2 Stroke or 4 Stroke

Engine Configurations Teknologi dan Rekayasa In Line (Automobile) Radial (Aircraft) V (Automobile) Horizontally Opposed (Subaru) Opposed Piston (crankshafts geared together)

History of IC Engines Teknologi dan Rekayasa 1860 Lenoir’s engine (a converted steam engine) combusted natural gas in a double acting piston, using electric ignition 1876Nikolaus Otto patented the 4 cycle engine, it used gaseous fuel 1882 Gottlieb Daimler, an engineer for Daimler, left to work on his own engine. His 1889 twin cylinder V was the first engine to be produced in quantities. Used liquid fuel and Venturi type carburetor, engine was named “Mercedes” after the daughter of his major distributor 1893 Rudolf Diesel built successful CI engine which was 26% efficient (double the efficiency of any other engine of its time)

Complementary Technologies Teknologi dan Rekayasa 1.Pneumatic tires (1888, Dunlop) 2.Cheap liquid fuels (Oil industry born in PA 1859) 3.Venturi effect carburetor (1892, Willi Maybach) 4.Variable mechanical transmission (primitive type by Levassor, 1891) 5.Electric starter (Kettering 1912)

Parts of an IC Engine Teknologi dan Rekayasa Oil Pan Crank Shaft Cylinder Block Piston Cylinder Head Cylinder Head Cover Cam Shaft Conecting Rod

4 Cycle Process Teknologi dan Rekayasa 4 Stroke Engine: Every 2x rotation of crank shaft or 4x movement of piston yields 1x Power

4 Cycle Process Teknologi dan Rekayasa Intake Stroke Intake valve opens, admitting fuel and air. Exhaust valve closed for most of stroke

4 Cycle Process Teknologi dan Rekayasa Compression Stroke Both valves closed, Fuel/air mixture is compressed by rising piston. Spark ignites mixture near end of stroke.

4 Cycle Process Teknologi dan Rekayasa Power Stroke Fuel-air mixture burns, increasing temperature and pressure, expansion of combustion gases drives piston down. Both valves closed - exhaust valve opens near end of stroke

4 Cycle Process Teknologi dan Rekayasa Exhaust Stroke Exhaust valve open, exhaust products are displaced from cylinder. Intake valve opens near end of stroke.

2 Cycle Process Teknologi dan Rekayasa 2 Cycle Engine: Every 1x rotation of crank shaft or 2x movement of piston yields 1x Power

2 Cycle Process Teknologi dan Rekayasa Compression Stroke and Intake Stroke Power Stroke and Exhause Stroke

Rotary “Wankel” Engine Teknologi dan Rekayasa

16 Teknologi dan Rekayasa BIBLIOGRAPHY: Briggs and Stratton TEAM 21 “Toyota Technician”, Toyota Astra Motor

Thanks very much Presented by Aloysius Sudibyo SMK Negeri 1 Magelang Source: Toyota and Briggs and Stratton