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Auto Climate Control Is Backwards

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AnalogBill
User Rank
Iron
Re: Auto controls in general
AnalogBill   3/6/2012 7:52:16 AM
NO RATINGS
Carbon monoxide IS a serious issue with many people being overcome by high concentrations warming up cars and/or idling with the tailpipe obstructed.

Even when driving, Mr. Bernoulli comes into play.  I had it happen to me years ago with bad body shop work leaving a small gap in the trunk lid seal where it sucked in tailpipe fumes that we could smell. 

What sort of conspiracy do you think all the world's auto manufacturers are trying to pull on us?  They're just covering themselves by using as much fresh air as possible.  As you say though, that's only as good as the air polluted by the cars in front of you but hopefully that's diluted a good bit.

The mechanical systems were balky, the vacuum systems were complex and expensive. The electronic system is current technology and once they shake out the bugs, hopefully will work for years, ATC or manual.

I agree with the poster about the multitude of tiny buttons.  How many people have to die in crashes just so the kids can have their gadgetry?

Bill

Rob Spiegel
User Rank
Blogger
Re: Another pointless automation
Rob Spiegel   3/6/2012 1:15:21 PM
NO RATINGS

Good points, David. Unfortunately, the nightmare scenario you describe is becoming more common than the simple, intuitive controls of the past. I many cases, this added – unintuitive -- complexity doesn't seem to deliver additional value.


sysdesign
User Rank
Iron
external temp sensor missing?
sysdesign   3/6/2012 3:44:45 PM
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This control problem can be eliminated if the outside temperature is known to the temperature controller.  A simple compare of inside to outsiide temperature will make the cooling or heating algrithm simple.

David12345
User Rank
Platinum
Re: external temp sensor missing?
David12345   3/6/2012 4:21:13 PM
NO RATINGS
The Toyota Highlander does have an external temperature sensor.  In fact, you can pull up the temperature that the external sensor is reading on the display of the climate control system.

I don't think the system is behaving differently than intended.  I think a lot of this discussion challenges whether the way that it is programmed is most appropriate or not.  As with most engineering systems design, there are trade-offs and some different opinions on how those are best managed.

Naturally, in a fully manual system, those opinions become moot, because the user can operate the system the way they want to.

BRedmond
User Rank
Silver
Re: Another pointless automation
BRedmond   3/6/2012 6:35:05 PM
NO RATINGS
I've had several cars where the recirc option was disabled when you set the system to defrost.

Nancy Golden
User Rank
Platinum
Re: Another pointless automation
Nancy Golden   3/8/2012 11:27:20 PM
NO RATINGS

In one of the labs I worked at, whenever one of the software engineers had a bug in the program, he called it a feature...

 

dhenz
User Rank
Iron
Re: Auto Climate Control is Backwards
dhenz   7/19/2012 10:14:25 PM
NO RATINGS
glad to read this one, a lot of good info here. I remember when I had problem with AC and my mechanic told me I had to replace the blower motor so I purchased one from jcwhitney's site... this is where I get cheap auto interior parts for my Toyota Corolla.

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