Comment by asdff
1 day ago
What you are missing is you can press the button blind while you are looking at the road, the button merely closes a circuit and always works.
But I'm talking beyond just the buttons. Pure analog. No telemetry. No cellular connection. Real rack and pinion again. Real gauges. No drive by wire wherever possible. Maybe the actual ev motor output can be controlled with a simple switch in the circuit vs an entire ecu with throttle profiles and all the bullshit. Basically, your car in 2003, with the gas engine replaced with an electric motor. Pure car. Dead simple systems. Easy access engine bays.
It isn't happening again. These things are ipads on wheels that try and surveil you and come up with datapoints they can somehow make some money off of.
> What you are missing is you can press the button blind while you are looking at the road, the button merely closes a circuit and always works.
Not just that: my hands get dry enough sometimes that my phone's touch interface doesn't work reliably, in which case, I'd expect a touchscreen interface in a newer car would face similar problems. Physical buttons don't have that problem.
> Maybe the actual ev motor output can be controlled with a simple switch in the circuit vs an entire ecu with throttle profiles and all the bullshit. Basically, your car in 2003, with the gas engine replaced with an electric motor.
Your gas car in 2003 probably directly connects the accelerator pedal to the throttle ... but it also has an entire ecu with a whole bunch of stuff to figure out how much fuel to add given the throttle position / airflow and also almost certainly has the ecu controlling ignition too. Even my 1981 van has an ECU to sets fuel volume, although it doesn't have electronic ignition or water cooling.
You can open the throttle all the way, and if the fuel volume doesn't change, you won't get much in the way of extra vrooming.
That said, as simple as possible, but no simpler is a good goal.
My 2000 Volvo (gas) had a fly by wire throttle. You'll have to go back to the 90s for a cable control.
Throttle by wire was already a thing but 2003. My 1999 truck had it - diesel benefitted more from that so it came earlier than gas.
Diesels often don't actually have a throttle like gas engines do. The accelerator pedal on a diesel is not connected to a throttle body regulating air intake... instead the air intake is classically wide open (but modern diesels do have airflow controls to adjust emissions profiles) and the accelerator position allows more or less fuel. If your ECU controls fuel delivery (as ECUs have been doing in gas cars since at least the 1970s) and the pedal's job is to ask for more or less fuel, it's going to be connected to the ECU... You can tug on a cable and turn that into an electrical signal at the ECU (or wherever) or you can turn it into an electrical signal at the pedal. Seems simpler to do it at the pedal.
A gas car has the pedal setup to open the throttle valve and let in more air and then some additional system for more air is more fuel... an ECU in open loop measures the airflow and engine temperature and triggers the injectors for a certain amount, in closed loop it will read the o2 sensor and adjust fueling to get the right mix.
If you move to drive by wire, now you have an electrical signal for the pedal, but you didn't necessarily simplify the system because you also have to add a way for the ecu to control the throttle valve or otherwise regulate intake airflow.
I agree. How do you feel about the Slate truck?
Nit: electric power steering is still rack and pinion. The old system is hydraulic vs electric.
Can't get lane assist with hydraulic. That's why. I miss the hydraulic steering from the E93 M3.
Can.
Googling for C-MDPS reveals some instructive diagrams, wherein: The motor that applies force to the steering system is mounted on the steering column shaft. It supplies steering input in a manner like one's hands do.
Since all it does is turn the shaft, it works fine with belt-driven hydraulic-assisted power steering racks (or any other kind).
I'm not really concerned with hitting the button blind but I understand the desire to have no "tracking" or anything like that. Volume in the Tesla at least there is a button and you can configure some of those things with software. I know the heated seats and climate control are done via the iPad as you call it but I don't have to look at those. Once you hit it enough you just know where it is, or you can use voice control if you're not that comfortable. I can also text on my iPhone pretty well without looking at the keyboard.
But I'm not sure what I'm supposed to do with all these gauges and stuff. I have 0 interest in trying to repair my car or understand how any of it works. I just want to get in, have it be super comfortable, everything works and it gets me from A to B pretty fast. The only gauge I care about is the speed at which the car is traveling. Well the battery too I guess but if I'm taking a trip where that's of concern the car handles the stops for me.
I get that people do enjoy that stuff which is super cool - I'm not hating on it, but figured I'd just provide a different perspective maybe. For me the biggest concern is just this dog shit Android software and abandonware that all the manufacturers create (except Tesla funny enough - I'm not a shill or anything, Elon sucks and I'll never buy another one because of him) which I think is probably the biggest negative to the iPad-ification. Thankfully there's Android Auto and Apple Car Play but still the computers in the cars can be underpowered to use those.
That's all fine. Sounds like a digital car is more for you vs an analog drivers car. People have different preferences.
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My decades old tube amp has figured out how to modulate high wattage power
So we've upgraded from the simple switch, that's good.
Now I'm imagining drivers swapping tubes as they stop for a quick charge.