Category Archives: Cars

Arduino ECU By Brenamanf

I was sent a link to this website by the author, who appears to have created an Arduino ECU for spark control. Although the details are a little sparse, It appears that he has developed a lot of the required hardware himself. It looks like the main controller is an Arduino Nano and utilises Manifold Absolute Pressure (MAP) and a knock sensor to determine the ignition timing on a Peugeot 205 Tu9 45Ch. It would appear that the ECU has been developed over a number of revisions and has been in operation for over a year.

Fuel injection map and closed loop lambda feedback

I have now managed to successfully map my engine simulator for the fuel injection timings across all loads and engine speeds. I have set up a two dimensional array, of speed and throttle position, and inside each element is the time in microseconds (us) that the fuel injector should be open for. I’ve also added closed loop lambda feedback.
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Variable Reluctance Sensors (Crankshaft position sensor)

VRS sensors (sometimes called crank sensors) are basically a coil of wire around a ferrite core. They are located close to a toothed wheel which is usually mounted on the crankshaft or the teeth are part of the flywheel itself. Here’s an example of one:

From this website:

From this website:

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Engine Control Unit Project

I am currently studying an MSc in Automotive Electronic Engineering, and am now beginning to work on my final project. The main goal of the project is to build an engine control unit. I’m now at the prototyping stage where I just want to get something working to that I can make sure that everything is possible. I’m hoping to eventually get to a stage where I use an in cylinder pressure transducer to infer the air to fuel ratio of the engine and use this instead of a lambda sensor as an input to my ECU to control my fuel injection. Continue reading

2004 Corsa C Wheel Hub Removal, wheel bearing, brake pads and disk renewal

Information given here describes working on the braking system of a car. This is only a rough guide, if you are not experienced with working on vehicles, I do not suggest starting on the brakes. If you crash and die – do not blame me.

This is a rough guide on working on some of the wheel hub parts on a 2004 1.2 L Vauxhall/Opel Corsa C. This may or may not apply to your vehicle, and should only be used as a guide. Additional  tools or steps may be required. I am not a mechanic, merely a hobbyist, and so any advice should be taken with a pinch of salt, as there may be better ways to do things. You follow this information at your own risk, if you cause any damage to your self or your car, do not blame me. If you are not confident in solving problems as they arise, or are not prepared to spend more money to fix things if they go wrong then get a professional mechanic to do the job. Continue reading