KUB Vs OC500

last SG · 2008-12-21T18:14:07+00:00

Makes me wonder why your username is of a KUB.....Contradiction?

ZYX2005 SG

The OC 500 LEs don't have Ecomat 4s...

Regards,

Dave

oh dear Dave,

Bit of confusion here.

In terms of ZF gearbox models, those ending with 4 are for EURO V buses right?

eg: Zf6HP604CN is a for an EURO IV or V bus.

thats what i meant, these newer models of gearboxes for more stringent EURO IV and V buses. Since the OC500LE is an EURO V bus it would be using a ZFXHPXX4 model.

---

Er.. i dunno know what Ecomat 4 means... It sounds like some extra feature in the Zf4HPXX4 gearboxes types...which i gather from your reply OC500LEs dunt have..whatever it is...

A very confused

ZYX

ZYX2005 SG

I feel like OCs r the attention grabbers for pedestrians sometimes.. Their eyes just cant get off them even me!

They'll probably grab more attention if they had a "full capapcity" front. I jjust love imagining the V shaped glass front with the Mercedes 3 point star in its plith hanging in front like an award medal to the bus.

hey this is your award, you are a Mercedes. (congrats - hangs medal on bus)

it shows how much pride Mercedes have in their buses and in general how prestigiuos Mercedes products are. You think Mercedes Cars are prestiguos? The OC500LE is more prestigous than the Mercedes car...lol

And indeed the bus does live up to its name provided us (well mostly me) good rides since 2008...

Always proud to baord a Mercedes OC500LE i would say...

ZYX

ZYX2005 SG

ZF gearboxes tend to constantly whine on OC 500s, even in Perth.

Regards,
Dave

I have taken to a listening of Perth OC500LEs... they do whine a lot. Compared to ours, they whine plenty.

oddly ours shows more of a L113CRL charcter to the engine sound and less whining background sounds.

Cheers
Yanxin

Powered_By_CNG SG

oh, in that case what i mena is

There is too much choke in these exhuast braking things of today newer buses compared to exhuast brakes used for older bus models......

I think you may be confusing the exhaust brake with the transmission-integral hydraulic retarder. Transmissions have definitely gotten harsher since Euro 3.

Powered_By_CNG SG

In terms of ZF gearbox models, those ending with 4 are for EURO V buses right?

eg: Zf6HP604CN is a for an EURO IV or V bus.

thats what i meant, these newer models of gearboxes for more stringent EURO IV and V buses. Since the OC500LE is an EURO V bus it would be using a ZFXHPXX4 model.

---

Er.. i dunno know what Ecomat 4 means... It sounds like some extra feature in the Zf4HPXX4 gearboxes types...which i gather from your reply OC500LEs dunt have..whatever it is...

ZF made several incarnations of the Ecomat transmission. The first few variants were the '0' series for everything from pre-Euro emissions engine to Euro 2 engines. Then came Euro 2/3 with CAN bus communication which required a redesigned transmission and thus the Ecomat 2 was released. The Ecomat 4 was a further development to match Euro 4/5 engines and now the Ecolife is an entirely new development for Euro 5/EEV engines.

First generation: ZF 4/5/6 HP 500/590/600

Second generation: ZF 4/5/6 HP 502C/552C/592C/602C

Third generation: ZF 4/5/6 HP 504/554/594/604

Ecolife: ZF 6 AP 1000B/1200B/1400B/1700B/2000B

NoobBOY SG

did ur maths fail? 299PS - 230PS = 39PS?!

Haha my bad! My math really sucks, i had almost never in my life pass my math and thanks for Powered_By_CNG for giving the correct answer and answering my question the same time

ZYX2005 SG

Dea Dave

ok my bad. I thought Ecomat 4 type is sued in the OC500LE.

so which Ecolite product does our Singapore O500LE use then?

And

1) what do the letters AP stand for? we know the old series HP stands for hosepower.

2) what about the 4 digits after AP? do they stand for toruqe ooutput range codes for bbus engines?

For example say the bus has 1200Nm toruqe power at optimal revs... it would have the 1200 taggged to it?

Thanks
Yanxin

nenepokey SG

Dea Dave

ok my bad. I thought Ecomat 4 type is sued in the OC500LE.

so which Ecolite product does our Singapore O500LE use then?

And

1) what do the letters AP stand for? we know the old series HP stands for hosepower.

2) what about the 4 digits after AP? do they stand for toruqe ooutput range codes for bbus engines?

For example say the bus has 1200Nm toruqe power at optimal revs... it would have the 1200 taggged to it?

Thanks
Yanxin

for me i'm not really sure, but think that our OC500LEs use the ZF6HP592C like the B7RLE.

Powered_By_CNG SG

ok my bad. I thought Ecomat 4 type is sued in the OC500LE.

so which Ecolite product does our Singapore O500LE use then?

And

1) what do the letters AP stand for? we know the old series HP stands for hosepower.

2) what about the 4 digits after AP? do they stand for toruqe ooutput range codes for bbus engines?

For example say the bus has 1200Nm toruqe power at optimal revs... it would have the 1200 taggged to it?

Thanks
Yanxin

Your OC 500 LEs have ZF 6HP 592C. Mercedes-Benz aren't bothering to homogolate the Ecomat 4 transmissions with their engines for whatever reason.

AP and HP are designations for Ecolife and Ecomat transmissions respectively. The HP designation has nothing to do with horsepower.

The four digit suffices in the Ecolife designations designate maximum torque transmission capability e.g. 1200B will transmit 1200Nm maximum.

Regards,
Dave

TIB1224Y SG

I find that when the pedal is released and pressed softly (like in a traffic jam situation), the OC's engine emit a sound similar to a Mercedes Benz Actros truck... The sounds do run similar in the Mercedes blood line I guess...

It would sound like a low pitch 'groong...(idle) groong...(idle)'.

ZYX2005 SG

Your OC 500 LEs have ZF 6HP 592C. Mercedes-Benz aren't bothering to homogolate the Ecomat 4 transmissions with their engines for whatever reason.

Ok thanks for the clarification. Oh HP is for Ecomat not horspower..hahha

ZYX

Scania N113CRB luver SG

Ecolife: ZF 6 AP 1000B/1200B/1400B/1700B/2000B

Wow. These names gave a better idea of how much power/torque the gearbox can handle. However, it sounded abit "Allison-ish". Hehe

TIB1018B SG

I am beginning to observe that the SBST's Scania K230UB's engine sounds a bit similar to the SMRT's UMW Lances.

Whereas the SMRT's Merc OC500LE's engine sounds like the SMRT's Hino Volgrens.

muziq bus SG

I am beginning to observe that the SBST's Scania K230UB's engine sounds a bit similar to the SMRT's UMW Lances.

Whereas the SMRT's Merc OC500LE's engine sounds like the SMRT's Hino Volgrens.

EXACTLY!
i so agree to that sentiment

Blackerol SG

Yeah at outside when it started accelerating it really sound like hino volgren and braking it sounds like habit braking.

sbs8104h SG

I am starting to hate the Scania K230UB buses Esp long distances.

Raraken SG

The OM 457 hLA engine has a rated speed of 2000rpm so governed speed will be slightly higher in the region of 2100-2200rpm. The M 447 hLAG gas engine is governed to 2340rpm.

Regards,
Dave

Would the OM447H be governed to those speeds as well? Took an O405 last week and as the bus was packed, I was standing near the driver. The Tacho read 2800rpm on 2nd gear. Bus was literally screaming.

Raraken SG

I am starting to hate the Scania K230UB buses Esp long distances.

Makes me wonder why your username is of a KUB.....

TIB1224Y SG

2800 RPM? It might have been 1800. 2800 is in the orange area of the meter which frankly is not possible to reach. No Mercedes I have seen, no matter if its Mark 1 non-turbo (non-SBS versions with tachometer) or Mark 2 turbo reaching such engine speeds. And that would include other 10-12 liter engines including but not limited to the Volvo and Scania ones.

At neutral gear, a normally tuned Mercedes OM447hA/hLA engine can reach 2200 RPM on the meter at maximum depression of the pedals (including kickdown switch). That would equate to a loud ambience noise in the Habit buses and loud 'screaming' of engine sound on the normal Hispano bodywork as heard by a commuter in the bus.

Powered_By_CNG SG

The OM 447-series engines are governed to somewhere around 2200rpm. The OM 457-series engines are governed to just over 2000rpm.

Regards,
Dave

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