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Video Petrol Injection 1
Video Petrol Injection 2
Video Petrol Injection 3
Video Petrol Injection 4
Video Petrol Injection 5
Video B-Dir. Combustion
Video Dir. Petrol Injection 1
Video Dir. Petrol Injection 2
Video Dir. Petrol Injection 3
Video Dir. Petrol Injection 4
Video Dir. Petrol Injection 5
Video Petrol Injection Kugelf.
Video Homog. Working
Video Stratified-charge Oper.
Video Fuel Distrib.
Video Induction System
Video Petrol Injection Signal 1
Video Petrol Injection Signal 2
Video Idle Speed Device
Video Mass Air Flow Sensor 1
Video Mass Air Flow Sensor 2
Video Mass Air Flow Sensor 3
Video System Press. Reg. 1
Video System Press. Reg. 2
Video Injection Valve
Video Ind. Pulse Generator
Video Single Point Injection 1
Video Single Point Injection 2
Video Single Point Injection 3
Video Single Point Injection 4
Video Unregistrated Air
Video Lambda Sensor 1
Video Lambda Sensor 2
Video Lambda Sensor 3
Video Lambda Sensor 4
Video Lambda Sensor 5
Video Thermo Time Switch
Video Side-channel Pump
Video Peripheral Pump

Video First Fuel Pump
Video Petrol Injection Pump
Video D-Jetronic (MPI)
Video K-jetronic
Video KE-jetronic
Video KE-Jetroncic - Test, Diagn.
Video L-jetronic
Video LE-jetronic
Video LE-motronic
Video LH-jetronic
Video Vol. Air Flow Sensor
Video Idle Speed Device
Video Aux. Air Valve
Video Thermo Time Switch
Video Roller Vane Pump

Video Petrol injection 1
Video Petrol injection 2

          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Petrol Injection Signal

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This petrol-injection signal is registered with the Bosch FSA 600. It is intended rather for learning than for error analysis. It shows the form and the distribution of the injection signals in relation to the crankshaft position.

How it works

First of all, you might want to take a view of the injection signals on top. The opening tension of 12 V is striking. How many injectors are opening up right now, cannot be read. But the opening period of 2 - 3 milliseconds is readable on the lower scale. A better accuracy would be possible by zooming into the X area. Typically for direct current magnetic valves (injectors) are the high induction tension in opposite direction while switching off.

Below you can see cogs at the flywheel (rear engine) or at the V-belt pulley (engine in front) flitting by the inductive pickup. With some patience it would be possible to count them. These are not, by the way, the cogs of the starter rim, because one cog is absent. This is recognizable by the gap and serves as a reference mark. Because of the gap the induction alternating voltage also deflects a little more to both sides.

It is interesting to look at both diagrammes simultaneously. You know that a total of approx. 2.5 crankshaft rotations have been registered. You could control the indicated revs and think about which fuel amount (completely or half) was injected by the valve shown...               Top of page               Index
2001-2015 Copyright programs, texts, animations, pictures: H. Huppertz - E-Mail
Translator: Don Leslie - Email:

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