I drove an e-Golf

[johu]

I'm back from Christmas holiday in my home town. To get around my father lent his e-Golf to me
There are a couple of little details that I wanted to note down:

1. Top speed 155 km/h very softly limited but you cannot go above even downhill
2. Winter consumption with heater set to 20°C: 20.8 kWh/100km
3. heater seems to draw about 3.5 kW initially and later cuts back to 1 kW
4. On acceleration the momentary consumption quickly maxes out at 99.9 kWh/100km
5. very unscientifically speaking the consumption figures are very similar to that of my converted Touran (needs more evaluation)
6. Very smooth transition between regen and acceleration
7. When a gear is first selected the car creeps very smoothly as soon as you release the brake. When waiting at a stop light and coming off the brake it didn't creep
8. The car will roll backwards slightly but is then stopped and held by the motor alone after about 1m (I couldn't hear the brake servo coming on)
9. The actual hill-hold function (as denoted by the button) is implemented using the parking brake
10. compared to a converted ICE car the transmission is unhearable
11. While I was coasting down a hill on the Autobahn with regen disabled, the car suddenly decided to slightly regen anyways. Reason was an upcoming speed limit. I assume had I touched the throttle it would stop doing that.

So especially the the creep and hill hold function was a good experience, I will try to implement it for open inverter also.

[doobedoobedo]

After driving an automatic for the past few years, hill hold is a nice feature.

I think we need to get you in to a few more modern EVs to see what nice features you could add .

[arber333]

Hi

Welcome back.
Since we are throwing ideas, I would recommend some to implement.
1. Temperature dependant regen. If outside temp would get lower than 3deg regen would cease to be in effect. Only hard brakes would be used. This would go a long way to protect battery from ordinary users that do not know a lot about battery keeping. You could also lower power while at that.

2. Couple of throttle curves implemented in code to be selected in the web interface. I noticed Ampera uses at least two noticable different curves. One at normal drive is a bit linear. The second one is the sport one. It quickly advances throttle in the first 1/3 of the curve and then eases off after 50%. We could have one as a soft start in winter, second for normal use, third one for sport starts. I guarantee the car will remain interesting for a long time. There could also be a fourth "emergency throttle" to put the car into turtle mode after battery is discharged or there is an error.

3. E-brake for short stops uphill or downhill. For those that will still use transmission. I was driving a Renault Megane diesel with normal transmission and i was surprised at one time when i stopped into a hill a brake pump started to work and car applied brakes all of itself. I could disengage brakes when i gave some throttle and the car took off. It was rather positive experience since with gas cars one can roll backwards if nbot carefull with a clutch. We could implement it by using an incline switch inside inverter . I have seen level switches. https://fluxworkshop.com/collections/bl ... l-393-blue

[Kevin Sharpe]

So especially the the creep and hill hold function was a good experience, I will try to implement it for open inverter also.

That would be very cool

[Kevin Sharpe]

So especially the the creep and hill hold function was a good experience, I will try to implement it for open inverter also.

That would be very cool

Did you make any progress with this Johannes?

[johu]

No but now that I've solved the fundamentals chances are better