ICE runs after going down a hill at the beginning of my drive.

K8QM: I feel ashamed to mention my "test" after reading yours, which are much more comprehensive .

 

It seems that we are rolling dice. Sometimes you get a 7, sometimes snake eyes.

 

@oko No - I just am the doofus who'll take that much time.

@bobcubsfan - If I lived anywhere close to you I would drive over, have a beer while we charged our Clarities and then try to figure out what's going on with your car!

geo

 

Our house is 32 miles from LAX. The drive there takes anywhere from 45 minutes to 2 hours. Why? It is predictably unpredictable. Debris on the road. Accidents. Street repair. There are too many variables to solve the equation. That is how I feel about the ICE issue. In electronics, if you can find the "smoking resistor" you can fix the device. Intermittences are the worst.

 

Hey. Make a g & t and we have a deal.

 

I have a new acronym: RIB. Random ICE Behavior. My wife got RIBed this morning. Her crime? She stepped on the brake.

 

I am beginning to suspect engine temperature as the culprit. But, yesterday, started out in Sport mode. Used the - toggle to get 4 chevrons. The car's computer set it back to 3 chevrons. Maybe to avoid ICE coming on?

 

The only times I see it reverting to three from four is if you are travelling over 55mph. I think above that speed, the amount of current flowing from four chevrons of regen must be above an allowable threshold Honda has established.

 

Nope. Just started out going < 10 mph.

 

Would need to see more cases like this to disprove our previous theory. To say you were at 67 miles when the ICE did not turn on and then you charged to 68.7 seems to indicate the battery was not at 100% at 67. Plus, you did not confirm that you initiated regenerative braking via paddle engagement during these downhill segments with a very full battery. Our previous theory has been battery fully charged AND user initiation of regen via paddle pull. I've even had cases where, with battery fully charged, I engaged one level of paddle regen (before remembering not to) and ICE did not trigger.

 

I wouldn't rely on any observations going less than 10mph. I think it turns off all chevrons around 8mph, so low speed behavior can obtain no reliable data.

 

Predictably unpredictable.

 

Trying to extract exact behavior at the inflection points of its decision tree is not wise.

 

Engine temp is definitely part of the algorithm. When does the gas engine run (other than on hard acceleration)

 

When it "feels like it." No repeatable pattern.

 

That happens if you have a full battery to minimize risk of ICE coming on.

 

That is what I said.

 

I can tell you for a fact that for me immediately after a full charge I always get limited regen for at least the first 3-5 miles or so in EV, shifter initiated regen blinks and reverts to 2 bars and brake pedal will not increase the amount of regen as it normally does.
Again, we all assume it’s to protect the battery from overcharging.