As far as I know: Petrol cars have throttle body because engine is controlled by quantity of the fuel-air mixture. Throttle body closes and open to control RPM, air/fuel ratio stays the same (most of the time, to simplify). Diesel cars don't have throttle body, because engine is controlled by quality of the mixture. RPM is controlled by how much fuel is added to the mixture, air/fuel ratio is changed based on the RPM demand. At idle diesel will show intake pressure close to atmospheric pressure. If there's a throttle body in diesel engine, it's for variable intake (some kind of swirl flaps or intercooler bypass in HDI engines) or it's a shutoff valve.
Hello, I/M refers to Inspection and Maintenance. This is a video I made to introduce how to upgrade the AL500: ua-cam.com/video/t9GXzr_TwUU/v-deo.html , if you are interested, you can watch it or give your opinion. There are more videos on my homepage of using related products to perform functions, you are welcome to follow my account. thanks.
Good review. Thanks
Happy to help!
Why is you map sensor Kpa over 100? It should be between 30-40 kpa
Diesel engine = no throttle body
@@mrfixpl are you sure mate? Every car since the last two decades have throttle body and inlet manifold
As far as I know:
Petrol cars have throttle body because engine is controlled by quantity of the fuel-air mixture. Throttle body closes and open to control RPM, air/fuel ratio stays the same (most of the time, to simplify).
Diesel cars don't have throttle body, because engine is controlled by quality of the mixture. RPM is controlled by how much fuel is added to the mixture, air/fuel ratio is changed based on the RPM demand.
At idle diesel will show intake pressure close to atmospheric pressure. If there's a throttle body in diesel engine, it's for variable intake (some kind of swirl flaps or intercooler bypass in HDI engines) or it's a shutoff valve.
BMW N47 2.0d 130kW, 102kPa at idle: ua-cam.com/video/TML64xdK1xI/v-deo.html
VW Golf MK7 2.0TDI 110kW, 103kPa at idle: ua-cam.com/video/m87pUfKODnI/v-deo.html
@@mrfixpl oh right thanks for the info, I really did. It know that
What is I/M referring to, please?
Hello, I/M refers to Inspection and Maintenance.
This is a video I made to introduce how to upgrade the AL500: ua-cam.com/video/t9GXzr_TwUU/v-deo.html , if you are interested, you can watch it or give your opinion. There are more videos on my homepage of using related products to perform functions, you are welcome to follow my account. thanks.
@@alext8828 emissions/smog test