MBZ mild hybrid??? E450 4matic
10-04-21, 10:33 AM
#1
Intermediate
Thread Starter
MBZ mild hybrid??? E450 4matic
I know its been around a while, but adding 48v battery and emotors just to help while waiting for the turbos to kick in...seems strange. Anyone care to explicate? Any other manufacturers doing something similar?
10-04-21, 02:39 PM
#2
Pole Position
In some cases (as with my Defender) the mild hybrid system is used to solve that specific problem by electrically powering the turbos or electrically powering a supercharger until the turbos are up to speed. In my case the engine has both turbos and an electrically powered supercharger. It ensures peak torque at lower RPM and greatly reduces lag. Audi and others have similar systems.
10-04-21, 02:48 PM
#3
Basically every European brand is using mild hybrid tech, mainly because it helps lower the emissions taxes short of going full hybrid or EV, which are more costly and time-consuming investments.
10-04-21, 02:53 PM
#4
Lexus Fanatic
‘It’s exactly what it is. It’s a “mild” hybrid. Helps with fuel economy as well as power at low speeds.. it allows Mercedes to up the electronics in the car. The battery will be smaller compared to a full hybrid.
10-04-21, 03:14 PM
#5
As an aside, I have started following GLS and GLE forums. Apparently MB received a bad batch of the 48v batteries as several owners have cited the failure of the vehicle to start, with the diagnosis being a failed 48v battery.
10-04-21, 03:20 PM
#6
Lexus Fanatic
‘Mercedes isn’t known for stellar reliability….
10-04-21, 03:35 PM
#7
Intermediate
Thread Starter
Thanks for the explanation. Wonder if an electric supercharger added to the V8 on an RC F would be spectacular or a spectacular failure. Currently naturally aspirated, so there's room to boost.
Trending Topics
10-04-21, 03:41 PM
#8
Lexus Fanatic
10-04-21, 03:43 PM
#9
10-04-21, 08:34 PM
#10
Moderator
Join Date: Aug 2006
Location: San Francisco, CA
Posts: 12,052
Likes: 0
Received 73 Likes
on
44 Posts
The 48V system in the MB helps to power advanced electronic like the advanced suspension which needs the extra power to work. In addition, it solves the start/stop problem, which is a big complaint to many luxury car owners.
10-05-21, 05:01 AM
#11
All that + mitigating turbo lag to an extent, removing the starter/alternator... etc - lots of benefits overall.
An electric supercharger doesn't make a whole lot of sense. Check the q50 hybrid / m35h for a sensible "electric boost" application - not including the gs450h as the drivetrain feels quite disconnected by comparison (no experience with the lc/ls500h). Points are - 1) you already have the electric motors to generate AND propel (no need for a separate supercharger), 2) an e-supercharger gets driven by the engine anyways, so it's overall less efficient over the long term than direct drive (not quite due to modulation of demand, but turbo systems are way better in this regard).
An electric supercharger doesn't make a whole lot of sense. Check the q50 hybrid / m35h for a sensible "electric boost" application - not including the gs450h as the drivetrain feels quite disconnected by comparison (no experience with the lc/ls500h). Points are - 1) you already have the electric motors to generate AND propel (no need for a separate supercharger), 2) an e-supercharger gets driven by the engine anyways, so it's overall less efficient over the long term than direct drive (not quite due to modulation of demand, but turbo systems are way better in this regard).
10-05-21, 08:19 AM
#12
Pole Position
All that + mitigating turbo lag to an extent, removing the starter/alternator... etc - lots of benefits overall.
An electric supercharger doesn't make a whole lot of sense. Check the q50 hybrid / m35h for a sensible "electric boost" application - not including the gs450h as the drivetrain feels quite disconnected by comparison (no experience with the lc/ls500h). Points are - 1) you already have the electric motors to generate AND propel (no need for a separate supercharger), 2) an e-supercharger gets driven by the engine anyways, so it's overall less efficient over the long term than direct drive (not quite due to modulation of demand, but turbo systems are way better in this regard).
An electric supercharger doesn't make a whole lot of sense. Check the q50 hybrid / m35h for a sensible "electric boost" application - not including the gs450h as the drivetrain feels quite disconnected by comparison (no experience with the lc/ls500h). Points are - 1) you already have the electric motors to generate AND propel (no need for a separate supercharger), 2) an e-supercharger gets driven by the engine anyways, so it's overall less efficient over the long term than direct drive (not quite due to modulation of demand, but turbo systems are way better in this regard).
10-05-21, 11:09 AM
#13
Intermediate
Thread Starter
10-05-21, 11:43 AM
#14
Lexus Fanatic
There are a lot of benefits, the real reason for it is to drive modern electronic loads, the old 12V systems just aren't up to it.
Thread
Thread Starter
Forum
Replies
Last Post