Tai626
Posts: 115
Joined: Sat May 19, 2018 7:01 am
Location: Los Angeles, CA, USA

Re: Can we clear up Serial vs Parallel drive?

Sat Nov 07, 2020 9:22 am

I think it is the reason the recent Outlander adopted Atkinson Cycle for better efficiency at broader RPM.
Even at Otto cycle, the extra torque go to batteries so it cannot be less efficient than series drive.
What I learnt to drive more efficiently is to use up 1/2 of batteries and go to parallel as fast as you can. It may involve some bottom pressing but it is fun. The car owner (my wife) may have another opinion about too much piano playing on her car :-)

Tai
Outlander PHEV SEL pearl white - MY2018

Tipper
Posts: 324
Joined: Mon Sep 07, 2015 2:34 pm
Location: Devon UK

Re: Can we clear up Serial vs Parallel drive?

Wed Nov 11, 2020 3:11 am

Tai626 wrote:
Sat Nov 07, 2020 9:22 am
I think it is the reason the recent Outlander adopted Atkinson Cycle for better efficiency at broader RPM.
Even at Otto cycle, the extra torque go to batteries so it cannot be less efficient than series drive.
What I learnt to drive more efficiently is to use up 1/2 of batteries and go to parallel as fast as you can. It may involve some bottom pressing but it is fun. The car owner (my wife) may have another opinion about too much piano playing on her car :-)

Tai
But it's not a true Atkinson engine...it's solely manipulation of the variable valve timing.

An Atkinson engine is much more complex than that involving changes to piston timing. :o
2015 GX4hs - Glacier Blue

oscarmax
Posts: 87
Joined: Sat Oct 27, 2018 3:47 am

Re: Can we clear up Serial vs Parallel drive?

Wed Nov 11, 2020 6:30 am

Mitsubishi Outlander 2.4 PHEV Design 2020 Towing a Swift Conqueror 480 2016 1500kg

Please be patient I suffered a brain injury several years ago and get confused at times

Tai626
Posts: 115
Joined: Sat May 19, 2018 7:01 am
Location: Los Angeles, CA, USA

Re: Can we clear up Serial vs Parallel drive?

Mon Nov 23, 2020 9:54 pm

Now we have computer to switch cycles from Otto to Atkinson :-)

From Toyota marketing:

https://m.youtube.com/watch?v=gD2AQuhbHdk

I think the 2.4L only runs Atkinson at lower speed. At higher speed, the engine switch to Otto cycle to supply the power needed.

We don’t get the 2.4L here in North America yet so please don’t quote me :-)

The Eclipse Cross PHEV is not coming here in 2021 neither ...

Tai
Outlander PHEV SEL pearl white - MY2018

kehfunah
Posts: 4
Joined: Fri Dec 18, 2020 9:13 pm

Re: Can we clear up Serial vs Parallel drive?

Fri Dec 18, 2020 9:18 pm

I'm very new to the phev. Just bought a 2020 phev and still don't understand how to use the serial and parallel drive. How do I select this? I only see normal mod, ev mode, eco, charge and save.

ChrisMiller
Posts: 574
Joined: Tue Jan 12, 2016 6:37 am
Location: Bucks

Re: Can we clear up Serial vs Parallel drive?

Sat Dec 19, 2020 4:21 pm

The car does it for you, depending on how much power you demand and your speed - it's all clever electronics and you have relatively little control over the power mode. You get a visual indication of which mode it's in either from the larger panel in the middle of the dash or the smaller panel in front of the steering wheel.
GX4h (2016) since 23/12/2015

jaapv
Posts: 4541
Joined: Mon Dec 16, 2013 1:18 pm
Location: Netherlands

Re: Can we clear up Serial vs Parallel drive?

Sun Dec 20, 2020 3:31 am

You can influence this more or less by the accelerator.
Instyle+ 2013
Titanium Grey
Off-white leather
Body kit
Protection kit
TPMS
Skidplates

ThudnBlundr
Posts: 669
Joined: Mon Mar 12, 2018 2:18 am
Location: Yorkshire end of M1, UK

Re: Can we clear up Serial vs Parallel drive?

Sun Dec 20, 2020 3:41 am

You have no control exept the speed you are going. Above 40mph/65kph the car will try to go into Parallel unless you are accelerating hard or are using 'Sport' mode. It connects the ICE to the wheels using what is in effect a top gear. Below that speed it has to use Series as the ICE would not be able to be run in an economical mode
2015 GX4hs since 03/18
2015 Renault Zoe R240 owner since 11/17

You may have speed, but I have momentum...Image

MadTechNutter
Posts: 127
Joined: Fri Jul 05, 2019 7:35 pm
Location: Aussie Land

Re: Can we clear up Serial vs Parallel drive?

Mon Dec 21, 2020 4:27 am

I am driving a late 2014 model so what I write may not be applicable to the newer models mentioned here. Also the ICE must have been running about one minute before it will switch to parallel mode.
As I mostly (99% of the time) drive in EV mode I am weary about demanding a lot of power/revs from a cold ICE, so I don't 'floor' it unless it has been running a while.

Parallel will always be more efficient than series so if one wants low fuel consumption, you want to achieve that 75km/h switching point ASAP (where safe) and then lift the throttle back where in my case I can keep it in parallel down to 65km/h (speedo shows 3km/h too high), so 62km/h, nobody will book me for that in a 60 zone.
Accelerating from that low speed will drain from the battery rather than switching to series again unless you floor it.

However I always try to drive pure EV mode at speeds up to 80km/h and only press the charge button when I am over or know I will be driving longer at 80km/h so I can avoid the dreaded series mode.

Now when you can't avoid series going up a steep hill, I find it better to switch to battery save rather than charge to avoid racing the ICE.
This can't be good for the engine nor for the battery when it is revving that high.
When I switch to save it runs quiet and I feel I have the same climbing torque.
I don't know if this is an error just with my car or a general design issue that the engine overworks itself by achieving the power for the hill and energy for the battery charge but it sounds so wild like the cylinder head is about to blow in the charge setting.
This is a vey steep hill, maybe 30˚ at times going up with 60km/h.
This era of thoughtless consumption must end so we can encourage a world of creative geniuses rather than consumer idiots.

littlescrote
Posts: 196
Joined: Fri Jul 26, 2019 3:52 am

Re: Can we clear up Serial vs Parallel drive?

Tue Dec 22, 2020 2:24 am

you're being overly worried about nothing. the engineers knew what they were doing when they programmed it.

the engine really doesn't rev very high, nowhere near what you might rev it to in a manual, and as it's the same basis of engine to the Lancer Evolution models, it's a well proven unit. the cylinder head is not going to blow unless you haven't serviced it and changed and filled fluids correctly, and even then generally you'll have some warning lights before anything mechanical happens. not going to happen unless it's been seriously abused in terms of lack of service.

Return to “General / Main Outlander PHEV Owners Forum”