[oldbeaver]

A gasoline engine has a direct relation between MAF (Mass airflow I think) and fuel consumption, as it uses stoichiometric combustion, which mean 14.7 parts of air per one of fuel.

So, having a MAF sensor in the air inlet allows one to estimate directly and with reasonable realism the fuel used in real time.

However, a diesel engine behaves different, and relation between air and fuel may vary a lot, depending on load.

Does someone in the Forum have a good estimation method of load, to use this information in a fuel computer?

True that the ideal system to use is a fuel computer, a speed digital signal, a fuel consumption digital signal. This last signal isn't present in a indirect injection old diesel engine (IDI), and must be generated somehow.

One way is direct: install two fuel flow meters and calculate difference between these. However, if you want reliable, strong and long lasting fuel flow meters, prepare your wallet. And you need to cut the fuel pipes or hoses. This mean leaks.

Other way is indirect, using signals that exist in these cars, or by installing a sensor to generate it.

Any new ideas?

Oldbeaver