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Technical => Tuning => Topic started by: ibizaCUPRA18t on December 29, 2018, 02:27:14 AM



Title: Bosch EV 870CC Part nr. 0280158209 Looking for TVUB
Post by: ibizaCUPRA18t on December 29, 2018, 02:27:14 AM
Hi,

Been on the look for voltage specs for these injectors and cannot find them anywhere. At one point I thought of using 750cc values @4bar but I don’t want to guess...

Any of you have data for these? OEM number 0280158209

Thanks.


Title: Re: Bosch EV 870CC Part nr. 0280158209 Looking for TVUB
Post by: Leonhard on December 30, 2018, 10:07:16 AM
according to Bosch info these injectors are making 600g/min @ 3bar (857ccm/min)
Resistance 12 Ohm


Title: Re: Bosch EV 870CC Part nr. 0280158209 Looking for TVUB
Post by: ibizaCUPRA18t on December 30, 2018, 03:18:37 PM
according to Bosch info these injectors are making 600g/min @ 3bar (857ccm/min)
Resistance 12 Ohm


Hi, thanks for trying to help out. I need dead times for 16v, 14v, 10v, 8v, and 6v if I remember correctly. I could use voltages from a 750cc @ 4 bar but it would still not be the same.


Title: Re: Bosch EV 870CC Part nr. 0280158209 Looking for TVUB
Post by: Leonhard on December 30, 2018, 11:37:40 PM
I'm trying to get more info of these rarely used ones  ;)

I'm using 0280158040 (670g/min) within this range, working quite well on a 1.8T,

with these deadtimes:

8    10    12    14    16V
2,5 1,5   1,1   0,8   0,6ms


Title: Re: Bosch EV 870CC Part nr. 0280158209 Looking for TVUB
Post by: ibizaCUPRA18t on January 06, 2019, 12:50:08 PM
I'm trying to get more info of these rarely used ones  ;)

I'm using 0280158040 (670g/min) within this range, working quite well on a 1.8T,

with these deadtimes:

8    10    12    14    16V
2,5 1,5   1,1   0,8   0,6ms


Nice! You mean 670cc versions with long nose and 7-holes? I will be trying 750cc values @ 4 bar. Then I will test your values.


Title: Re: Bosch EV 870CC Part nr. 0280158209 Looking for TVUB
Post by: sonique on January 07, 2019, 03:59:34 PM
670 g/min n-Heptan not CC petrol :D
this tvub to low 040 and 209 injector


Title: Re: Bosch EV 870CC Part nr. 0280158209 Looking for TVUB
Post by: ibizaCUPRA18t on January 08, 2019, 06:48:09 AM
670 g/min n-Heptan not CC petrol :D
this tvub to low 040 and 209 injector

So do you think I can use this TVUB also on my 870cc injectors?


Title: Re: Bosch EV 870CC Part nr. 0280158209 Looking for TVUB
Post by: sonflasch on January 09, 2019, 05:24:10 AM
email from Bosch service

0 280 158 209
Alpha: 30°
Gamma: 0°
Delta: 0°
Beta: 8°
Qstat: 600g/min @ 300kPa (n-Heptan)
qdyn: 14,7mg/Hub @ 2,5ms

Spannung [V]   ts [ms]
7   2,89
8   2,25
9   1,86
10   1,60
11   1,40
12   1,25
13   1,13
14   1,03
16   0,87



Title: Re: Bosch EV 870CC Part nr. 0280158209 Looking for TVUB
Post by: ibizaCUPRA18t on January 09, 2019, 07:15:01 AM
email from Bosch service

0 280 158 209
Alpha: 30°
Gamma: 0°
Delta: 0°
Beta: 8°
Qstat: 600g/min @ 300kPa (n-Heptan)
qdyn: 14,7mg/Hub @ 2,5ms

Spannung [V]   ts [ms]
7   2,89
8   2,25
9   1,86
10   1,60
11   1,40
12   1,25
13   1,13
14   1,03
16   0,87



THANKS! I am very thankful man I was willing to pay money for this... Nice that bosch informed you. I could not contact them. You have helped me a LOT now I don't have to guess KRKTE Values and TVUB either.

Hope you have a great day my friend. If you need help with anything just pm me. +1


Title: Re: Bosch EV 870CC Part nr. 0280158209 Looking for TVUB
Post by: lepatron972 on January 12, 2019, 04:55:26 AM
Hi,

I am looking for voltage specifications for these injectors Bosch EV14-ES 0280158042 and can not find them anywhere, in the hitachi ecu of vehicles that use these injectors there is only one point for 14V but I do not have the offset to have value either. who can help me?


Thanks you.


Envoyé de mon iPhone en utilisant Tapatalk Pro


Title: Re: Bosch EV 870CC Part nr. 0280158209 Looking for TVUB
Post by: usabug on January 03, 2022, 03:55:24 AM
email from Bosch service

0 280 158 209
Alpha: 30°
Gamma: 0°
Delta: 0°
Beta: 8°
Qstat: 600g/min @ 300kPa (n-Heptan)
qdyn: 14,7mg/Hub @ 2,5ms

Spannung [V]   ts [ms]
7   2,89
8   2,25
9   1,86
10   1,60
11   1,40
12   1,25
13   1,13
14   1,03
16   0,87



Good evening and happy new year .
Did any body had any chance with the above TVUB values ?

Ive tried the above values and the AFR is way off in idle .
I had to correct the KRKTE from 0.0442 (according the calulations on FR )  to 0.0385 just to go close to stoichiometric  (14.5 on wideband ) .

Any advise ?

Engine cc = 1970
Temin = 0.15
Fuel Pressure is = 3 bar


Title: Re: Bosch EV 870CC Part nr. 0280158209 Looking for TVUB
Post by: lepatron972 on January 03, 2022, 04:44:34 AM
Krkte =0,041257053333333 %/ms
For 3,0 bar pressure.
AFR stœchiométric Is 14,7 for gasoline not 14,5
14,5 afr is for Diesel


Envoyé de mon iPhone en utilisant Tapatalk Pro


Title: Re: Bosch EV 870CC Part nr. 0280158209 Looking for TVUB
Post by: usabug on January 03, 2022, 05:40:02 AM
Krkte =0,041257053333333 %/ms

Anything bigger than 0.385  i am running on 13ish AFR 

For 3,0 bar pressure.
AFR stœchiométric Is 14,7 for gasoline not 14,5
14,5 afr is for Diesel

I am aware the value of 14.7 ... i said just to go CLOSE to stoichiometric , which means that from 13.4 -->  i went with krkte = 0.0385 to 14.5 AFR on wideband  ...

So since the temin is already very small (0.15ms cannot make such difference ) , FKKVS = all 1 , MAF = OEM , that makes me wonder if the TVUB on the post above maybe not be correct .