Are There Humidity Sensors?

All that has to do with the power train, gearbox, clutch, fuels and lubricants, etc. Generally the mechanical side of Formula One.
johnny comelately
7
Joined: Thu Apr 09, 2015 11:55 pm
Location: Australia

Are There Humidity Sensors?

Post by johnny comelately » Sat Apr 07, 2018 5:40 am

Are there humidity sensors for ICE input?

In the troglodyte days wet days required a drop of one or two sizes.

I cannot find usage of humidity measurement in F1 or other engines.

Muniix
14
Joined: Tue Nov 29, 2016 12:29 pm
Location: Sydney, Australia

Re: Are There Humidity Sensors?

Post by Muniix » Sun May 13, 2018 7:03 pm

johnny comelately wrote:
Sat Apr 07, 2018 5:40 am
Are there humidity sensors for ICE input?

In the troglodyte days wet days required a drop of one or two sizes.

I cannot find usage of humidity measurement in F1 or other engines.
Many of the modern P/T and 10 axis sensors you'd use in any modern vehicle will have humidity sensors data. The Infineon sensors released at the beginning of 2017 do. I've always wondered this also. With ECU maps being used to represent the trapped air mass in cylinder and some additional hacks to take into consideration ambient temp and pressure, accurate air box pressure is all you really need with the high flow rate temp and humidity will be as ambient sensor indicates.
Engine calibration is by convention done at 25% or 30% humidity, with water sprayed into air supply system.

Big Tea
59
User avatar
Joined: Sun Dec 24, 2017 7:57 pm

Re: Are There Humidity Sensors?

Post by Big Tea » Sun May 13, 2018 11:10 pm

Muniix wrote:
Sun May 13, 2018 7:03 pm
johnny comelately wrote:
Sat Apr 07, 2018 5:40 am
Are there humidity sensors for ICE input?

In the troglodyte days wet days required a drop of one or two sizes.

I cannot find usage of humidity measurement in F1 or other engines.
Many of the modern P/T and 10 axis sensors you'd use in any modern vehicle will have humidity sensors data. The Infineon sensors released at the beginning of 2017 do. I've always wondered this also. With ECU maps being used to represent the trapped air mass in cylinder and some additional hacks to take into consideration ambient temp and pressure, accurate air box pressure is all you really need with the high flow rate temp and humidity will be as ambient sensor indicates.
Engine calibration is by convention done at 25% or 30% humidity, with water sprayed into air supply system.
Do these sensors work well with moving air at varying speeds? Would not a humidity dropout form in a low pressure zone? (removing water vapor from downstream air)
One test is worth a thousand expert opinions

gruntguru
429
Joined: Sat Feb 21, 2009 6:43 am

Re: Are There Humidity Sensors?

Post by gruntguru » Mon May 14, 2018 6:10 am

Big Tea wrote:
Sun May 13, 2018 11:10 pm
Muniix wrote:
Sun May 13, 2018 7:03 pm
johnny comelately wrote:
Sat Apr 07, 2018 5:40 am
Are there humidity sensors for ICE input?

In the troglodyte days wet days required a drop of one or two sizes.

I cannot find usage of humidity measurement in F1 or other engines.
Many of the modern P/T and 10 axis sensors you'd use in any modern vehicle will have humidity sensors data. The Infineon sensors released at the beginning of 2017 do. I've always wondered this also. With ECU maps being used to represent the trapped air mass in cylinder and some additional hacks to take into consideration ambient temp and pressure, accurate air box pressure is all you really need with the high flow rate temp and humidity will be as ambient sensor indicates.
Engine calibration is by convention done at 25% or 30% humidity, with water sprayed into air supply system.
Do these sensors work well with moving air at varying speeds? Would not a humidity dropout form in a low pressure zone? (removing water vapor from downstream air)
Only if the ambient air is close to saturation.
je suis charlie