Jump to content

Full battery(or near full) and ICE, different sound from engine


Jus-A-CMax
 Share

Recommended Posts

Is it my Max or does this happen to your Max as well?

 

With a full or near full battery, when I engage the ICE from EV, say 35mph to 45mph or higher, I notice the ICE sounds and feels like its in high gear. It does not have characteristic "whirl" ICE sound - but it still goes and responds. 

 

Also, I am noting that at 90%+, using the acceleration to recharge stops working. Only way to bring in more charge is to pulse and let the coasting do the charging. 

 

Anyone else notice these characteristics?

Edited by Jus-A-CMax
Link to comment
Share on other sites

Is it my Max or does this happen to your Max as well?

 

With a full or near full battery, when I engage the ICE from EV, say 35mph to 45mph or higher, I notice the ICE sounds and feels like its in high gear. It does not have characteristic "whirl" ICE sound - but it still goes and responds. 

 

Also, I am noting that at 90%+, using the acceleration to recharge stops working. Only way to bring in more charge is to pulse and let the coasting do the charging. 

 

Anyone else notice these characteristics?

I'm not sure on your first point, but have noticed the recharge stops working on a full battery.  Usually when that happens, I'm getting around 50mpg on the ice anywhere from 65 to 75 mph.  My theory is that all the energy from the engine is moving the wheels, not recharging the battery.

Link to comment
Share on other sites

I'm not sure on your first point, but have noticed the recharge stops working on a full battery.  Usually when that happens, I'm getting around 50mpg on the ice anywhere from 65 to 75 mph.  My theory is that all the energy from the engine is moving the wheels, not recharging the battery.

Yep, that the ICE high mpg mode and that is beautiful indeed  :) 

 

My 1st point was whether what I was hearing and feeling is just a gearing issue, or maybe it's some sort of ICE/EV combo - to me it just sounds and feels "odd". If you take a manual shift car, from stop, put it into 1st, pick up speed to say 10mph and throw it to the 3rd gear - that's what it feels like except with the Max, it will go like it was OK. Next time you've got a full or > 95% battery, bring the speed to say 35mph and let the car fall into EV and then press the pedal to kick in the ICE to accelerate to say 50mph. Just curious that was all....

Link to comment
Share on other sites

Guys, switch to the Engage(?) mode on your display, the one that shows both ICE and EV bars at the same time. I think what you'll notice is that you are getting an EV assist most of the time, even if the ICE hasn't cut off entirely. This is probably better than EV mode, since the computer has more options to blend electric and gas power to find an optimum balance point.

Link to comment
Share on other sites

I agree with MikeB.  I think the ICE is not required to propel the car as much because the electric assist is doing most of the work.  I notice this quite often when I am driving in town on a cold day.  The ICE runs to create heat for the cabin and eventually the battery becomes fully charged.  At that point the car drives much differently, because 90% of the engine use is for creating heat.  Since the ICE is operating the transmission is engaged but there is very little tractive effort going through it.

Edited by shaners
Link to comment
Share on other sites

I was driving the car today and it was cold out.  I set the my view to the tach and while it was charging it was running 1500-2000 rpm.  Once the battery was charged the engine continued to run to create heat for the cabin but the tach stayed right around 1000 rpm.    I would notice the down arrow on the battery when I would take off from a stop sign or while getting up to cruising speed.

Link to comment
Share on other sites

Is it my Max or does this happen to your Max as well?

 

With a full or near full battery, when I engage the ICE from EV, say 35mph to 45mph or higher, I notice the ICE sounds and feels like its in high gear. It does not have characteristic "whirl" ICE sound - but it still goes and responds. 

I've noticed the sound and feel that you are referring to Jus. But I didn't know if it was my imagination, or an artifact of driving in ridiculous cold weather.

Link to comment
Share on other sites

It is the EV kicking in to help the ICE, you can clearly see this in the ENGAGE mode, however, the sound takes a while to get use to and coming from a manual aka stick shift cars in the past, its disconcerting to my ears. The batts are so high, even if I want to use the ICE only at speeds <  63, it will always engage the battery so just pulse it to the speed that you need and just let it coast to recharge.

Link to comment
Share on other sites

Jus, Zhack, I'm not understanding the second half of the question (that's fine), but are you suggesting that we can get better MPG somewhere between 65 and 75 mph (50+-), than at 55 to 62mph?  That sounds counter intuitive, but If it is so, then wonderful.  Nick

Edited by C-MaxSeattle
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

×
×
  • Create New...