These are the typical fuel systems of modern automotive engines. It is a system because it is compiled of different components which work together to deliver fuel to the engine. Different engines have different designs of EFI installed according to their needs, but their workings are more or less basically the same.
The EFI system components include:
1. fuel injectors,
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copyright- http://www.selboy.com/images/uploads/7_x_Opel_Manta_GTE_petrol_fuel_injectors.jpg
2. high pressure fuel pump,
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high pressure fuel filter and lines,
copyright- http://www.ucalfuel.com/images/products/High_Pressure_FuelFilter_b.jpg
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3. the programmed (control) computer module (PCM),
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4. and all the sensors that help this PCM meter the optimal fuel amounts to the injectors. This is done according to the PCM's program and design, which accounts for the engine's variable running conditions and requirements;
a.Temperature coolant sensor
copyright- http://turbomr2.com/MR2/HowTo/Engine_Upgrade/Rebuild/Images/Cooling/Coolant_Temp_Sensor_6247.JPG
b. Engine timing Knock sensor
copyright- http://www.obd-codes.com/faq/images/knock-sensor.jpg
c. Engine Speed sensor
copyright- http://www.12v.org/engine/mms3xx/G28-pict.png
copyright- http://www.germanautoparts.com/displayimage.php?file=96130734031326302900
d. Engine oil pressure sensors
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e. oxygen sensor
copyright- http://sp.life123.com/bm.pix/oxygen-sensor.s600x600.jpg
copyright- http://www.bmwtips.com/tipsntricks/Exhaust/O2sensor_files/o2sensor1a.jpg
The EFI system components include:
1. fuel injectors,
copyright- http://t2.gstatic.com/images?q=tbn:ANd9GcSGf_Jc9HA6M2-jJS8Le12BqYzWEHBsYhw9YePrmMrqIrdo5dA9xg
copyright- http://www.selboy.com/images/uploads/7_x_Opel_Manta_GTE_petrol_fuel_injectors.jpg
2. high pressure fuel pump,
copyright- http://www.island-4x4.co.uk/fuel-pump-3539-8692-prc8318-p-980.html
high pressure fuel filter and lines,
copyright- http://www.ucalfuel.com/images/products/High_Pressure_FuelFilter_b.jpg
3. the programmed (control) computer module (PCM),
copyright- http://www.giterdoneauto.com/catalog/100_1854.JPG
copyright- http://images1.hellotrade.com/data2/EX/XE/HELLOTD-526855/him-250x250.jpg
4. and all the sensors that help this PCM meter the optimal fuel amounts to the injectors. This is done according to the PCM's program and design, which accounts for the engine's variable running conditions and requirements;
a.Temperature coolant sensor
copyright- http://turbomr2.com/MR2/HowTo/Engine_Upgrade/Rebuild/Images/Cooling/Coolant_Temp_Sensor_6247.JPG
b. Engine timing Knock sensor
copyright- http://www.obd-codes.com/faq/images/knock-sensor.jpg
c. Engine Speed sensor
copyright- http://www.12v.org/engine/mms3xx/G28-pict.png
d. Engine oil pressure sensors
e. oxygen sensor
copyright- http://www.bmwtips.com/tipsntricks/Exhaust/O2sensor_files/o2sensor1a.jpg
