The context is the following (the occurrence of the term is emphasized by me):The above provisions are deemed to be fulfilled when the pressure in the service brake storage device(s) is maintained at a pressure of at least 80 percent of the control line DEMAND PRESSURE or equivalent digital DEMAND as defined in paragraph 3.1.2.2. of Annex 4I am puzzled by the use of demand here. What is it? I am a non-native English speaker and I have to make a translation of this paragraph.
If you want your moneys worth, just keep running it till it blows out, instead of trying to screw the company that you voluntarily did business with. Thank you
seems to me that. driver presses brake, car's computer calculates how hard to brake and demands the pressure to be applied to the brakes. The above provisions are fulfilled if 80% of the pressure the car needs to brake can be applied. thats my interpretation. Im guessing its about safety? There's a certain amount of pressure that needs to be applied to the brakes to stop the car and as long as 80% of that pressure can be applied the system is working safely.
I am not an engineer but, the way I read the text is that the demand pressure is the minimum pressure required to operate the brake system safely and normal running would require the brake pressure to be 80% above the minimum required pressure. Does that make sense.
