Closed loop Question...
12-08-2004, 10:47 PM
#41
These figures are Fords own for the Lambda and catalyst equipped 93 Sapphire. (The most fuel efficient saff ever made)
Urban Cycle:
22.1 mpg
Constant 56mph:
37.2
Constant 75mph:
30.4mpg.
Anyone got a 3dr or early sapphire manual as thesefigures are more realistic for someone having a conversion that didnt have lambda fitted originally, like Rob's 3dr.
Urban Cycle:
22.1 mpg
Constant 56mph:
37.2
Constant 75mph:
30.4mpg.
Anyone got a 3dr or early sapphire manual as thesefigures are more realistic for someone having a conversion that didnt have lambda fitted originally, like Rob's 3dr.
13-08-2004, 01:17 AM
#42
Norris Motorsport
Stu I have my original 3dr hand book here.....official 3dr fuel consumption figures were (this is non lambda folks i.e. mapping config only)
constant 56mph - 38.2 mpg
constant 75mph - 30.0 mpg
simulated urban driving 22.8mpg
(Can't help wondering where LEAD FOOT figures are PMSL
)
constant 56mph - 38.2 mpg
constant 75mph - 30.0 mpg
simulated urban driving 22.8mpg
(Can't help wondering where LEAD FOOT figures are PMSL
)
14-08-2004, 10:43 AM
#46
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Originally Posted by Stu @ M Developments
ive put all three
16-08-2004, 10:07 AM
#53
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Originally Posted by Jokeri
Stu: Can this same thing be done with simon´s ecu?
Phil
17-08-2004, 01:09 PM
#54
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Originally Posted by Katie
Originally Posted by Jokeri
Stu: Can this same thing be done with simon´s ecu?
Phil
If it can do those things Simon is going to get few orders from Finland
08-05-2005, 11:54 AM
#59
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how much notice do you need stu
still need to get a few bits and pieces bolts etc
and should have the new head next week
still need to get a few bits and pieces bolts etc
and should have the new head next week
08-05-2005, 12:02 PM
#60
Originally Posted by toff
how much notice do you need Stu
still need to get a few bits and pieces bolts etc
and should have the new head next week
still need to get a few bits and pieces bolts etc
and should have the new head next week
30-12-2005, 11:08 PM
#62
Testing the future
As you've bttt'd this Stu, I have some technical questions about the closed loop fuelling if i may?
1) What is the highest percentage lambda correction can affect the fuelling? Is it the same in both directions and can this be changed dependant on customer request?
2) What is happening in transient conditions? Is the transition from closed to open loop instant or smooth?
3) Can the PID control parameters (Proportional, Integral, Derivative) be changed on customer request?
4) How do the CO pot and closed loop co-exist? Which is active at idle?
thanks
1) What is the highest percentage lambda correction can affect the fuelling? Is it the same in both directions and can this be changed dependant on customer request?
2) What is happening in transient conditions? Is the transition from closed to open loop instant or smooth?
3) Can the PID control parameters (Proportional, Integral, Derivative) be changed on customer request?
4) How do the CO pot and closed loop co-exist? Which is active at idle?
thanks
15-10-2006, 03:25 AM
#64
1) What is the highest percentage lambda correction can affect the fuelling? Is it the same in both directions and can this be changed dependant on customer request?
Its set around 33% But can be changed if you require, although i fail to see why you would want to?
2) What is happening in transient conditions? Is the transition from closed to open loop instant or smooth?
Its smooth, although i prefer lean to rich to be a little harsher than rich to lean so that curve is slightly more agressive.
3) Can the PID control parameters (Proportional, Integral, Derivative) be changed on customer request?
Yes, but again, why would you wish to do so?
4) How do the CO pot and closed loop co-exist? Which is active at idle?
The pot under closed loop control affects the gain at idle only. This serves largely to trim the ecu to the sensor in laymans terms.
Appologies if this isnt clear, just come in from a night at teh syndicate and i am rather hammered. lol
Its set around 33% But can be changed if you require, although i fail to see why you would want to?
2) What is happening in transient conditions? Is the transition from closed to open loop instant or smooth?
Its smooth, although i prefer lean to rich to be a little harsher than rich to lean so that curve is slightly more agressive.
3) Can the PID control parameters (Proportional, Integral, Derivative) be changed on customer request?
Yes, but again, why would you wish to do so?
4) How do the CO pot and closed loop co-exist? Which is active at idle?
The pot under closed loop control affects the gain at idle only. This serves largely to trim the ecu to the sensor in laymans terms.
Appologies if this isnt clear, just come in from a night at teh syndicate and i am rather hammered. lol
15-10-2006, 12:23 PM
#66
Originally Posted by sygjim
perhap's, actualy, mi pod has 2 turn clockwise due to last tune
if i turn 5 clockwise, i will have 7 turn .....
how to reset ?
if i turn 5 clockwise, i will have 7 turn .....
how to reset ?
15-10-2006, 01:34 PM
#67
Professional Waffler
Originally Posted by Stu @ M Developments
3) Can the PID control parameters (Proportional, Integral, Derivative) be changed on customer request?
Yes, but again, why would you wish to do so?
Yes, but again, why would you wish to do so?
i get the feeling you can change the 3 term control in the lab software nick?
15-10-2006, 04:20 PM
#68
Hard to guess gareth but hes not an idiot so he must have some scheme in mind.
To hopefully help, here are the most easily and commonly changed values in teh closed loop operation program i use within weber Marelli:
CLOSED LOOP DELAY IF ECT > X
CLOSED LOOP DELAY IF ECT < X
WARM UP CORRECTION MAP CHANGEOVER TIME = X SECS
MAX MAP FOR CLOSED LOOP = X PSI
MIN ACT FOR CLOSED LOOP = X degC
MAX TPS FOR CLOSED LOOP = X deg
MAX RPM FOR CLOSED LOOP = X RPM
MIN MAP FOR CLOSED LOOP + X psi
DELAY BEFORE OXYGEN SENSOR ERROR FLAGGED IF STUCK LEAN WHEN CLOSED LOOP = X REVS
OXYGEN SENSOR A-D RICH/LEAN TRANSITION POINT
CLOSED LOOP CORRECTION +/-%. =X%
COLD START LATCH TEMPERATURE = X degC
MIN ECT IF TPS CLOSED FOR CLOSED LOOP = X degC
1800 MULTIPLIER VALUE IF LEAN AND TPS CLOSED
1800 MULTIPLIER VALUE IF RICH AND TPS CLOSED
MULTIPLIER IF TPS CLOSED BUT NOT ON OVERRUN
MIN NUMBER OF ENGINE REVOLUTIONS BEFORE CLOSED LOOP = Xrpm
MAP TRANSIENT INJECTION ACCEL TRIGGER VALUE for CL
MAP TRANSIENT INJECTION DECEL TRIGGER VALUE for CL
MINIMUM TRANSIENT DECEL FUEL VALUE for CL
TRANSIENT CORRECTION +VE MULTIPLIER for CL
TRANSIENT CORRECTION -VE MULTIPLIER for CL
CL MAP TRIP POINT FOR TABLES X to X = X psi
WARM UP DELAY TABLE TRIP POINT = X rpm
MULTIPLIER IF LEAN & MAP < X
MULTIPLIER IF LEAN & MAP > X
MULTIPLIER IF RICH & MAP < X
MULTIPLIER IF RICH & MAP > X
I have replaced map and table addresses with an "X" for obvious reasons and they are irrelevent to teh topic anyway.
So, what are your thoughts that made you ask mate?
To hopefully help, here are the most easily and commonly changed values in teh closed loop operation program i use within weber Marelli:
CLOSED LOOP DELAY IF ECT > X
CLOSED LOOP DELAY IF ECT < X
WARM UP CORRECTION MAP CHANGEOVER TIME = X SECS
MAX MAP FOR CLOSED LOOP = X PSI
MIN ACT FOR CLOSED LOOP = X degC
MAX TPS FOR CLOSED LOOP = X deg
MAX RPM FOR CLOSED LOOP = X RPM
MIN MAP FOR CLOSED LOOP + X psi
DELAY BEFORE OXYGEN SENSOR ERROR FLAGGED IF STUCK LEAN WHEN CLOSED LOOP = X REVS
OXYGEN SENSOR A-D RICH/LEAN TRANSITION POINT
CLOSED LOOP CORRECTION +/-%. =X%
COLD START LATCH TEMPERATURE = X degC
MIN ECT IF TPS CLOSED FOR CLOSED LOOP = X degC
1800 MULTIPLIER VALUE IF LEAN AND TPS CLOSED
1800 MULTIPLIER VALUE IF RICH AND TPS CLOSED
MULTIPLIER IF TPS CLOSED BUT NOT ON OVERRUN
MIN NUMBER OF ENGINE REVOLUTIONS BEFORE CLOSED LOOP = Xrpm
MAP TRANSIENT INJECTION ACCEL TRIGGER VALUE for CL
MAP TRANSIENT INJECTION DECEL TRIGGER VALUE for CL
MINIMUM TRANSIENT DECEL FUEL VALUE for CL
TRANSIENT CORRECTION +VE MULTIPLIER for CL
TRANSIENT CORRECTION -VE MULTIPLIER for CL
CL MAP TRIP POINT FOR TABLES X to X = X psi
WARM UP DELAY TABLE TRIP POINT = X rpm
MULTIPLIER IF LEAN & MAP < X
MULTIPLIER IF LEAN & MAP > X
MULTIPLIER IF RICH & MAP < X
MULTIPLIER IF RICH & MAP > X
I have replaced map and table addresses with an "X" for obvious reasons and they are irrelevent to teh topic anyway.
So, what are your thoughts that made you ask mate?
15-10-2006, 08:17 PM
#69
Professional Waffler
Originally Posted by Stu @ M Developments
Hard to guess gareth but hes not an idiot so he must have some scheme in mind.
15-10-2006, 08:32 PM
#70
Testing the future
christ, this is an old one 
i was just interested to know what was possible stu, not because i would have wanted to change anything. doesn't matter now anyway, got no cossie anymore
i was just interested to know what was possible stu, not because i would have wanted to change anything. doesn't matter now anyway, got no cossie anymore
15-10-2006, 10:06 PM
#71
Originally Posted by foreigneRS
christ, this is an old one
i was just interested to know what was possible Stu, not because i would have wanted to change anything. doesn't matter now anyway, got no cossie anymore
i was just interested to know what was possible Stu, not because i would have wanted to change anything. doesn't matter now anyway, got no cossie anymore
gareth, no of course it didnt mate.
21-10-2006, 09:56 AM
#72
Hi,
i had fit siemens 55, lambda and closed loop chip and i have some questions:
- on bosch injectors, you have a plastic cap on the bottom of the injectors, does i need to fit one on the siemens ?
- i had fit the lambda sensor on the standard connector of my sierra 4*4, how verify if the signal is good ?
- on my l8 , i can turn clockwise and anti clockwise infinite, it's nomal ??? do you have a stop when you turn clockwise ?
regards
i had fit siemens 55, lambda and closed loop chip and i have some questions:
- on bosch injectors, you have a plastic cap on the bottom of the injectors, does i need to fit one on the siemens ?
- i had fit the lambda sensor on the standard connector of my sierra 4*4, how verify if the signal is good ?
- on my l8 , i can turn clockwise and anti clockwise infinite, it's nomal ??? do you have a stop when you turn clockwise ?
regards
21-10-2006, 10:44 AM
#73
Originally Posted by sygjim
Hi,
i had fit siemens 55, lambda and closed loop chip and i have some questions:
- on bosch injectors, you have a plastic cap on the bottom of the injectors, does i need to fit one on the siemens ?
- i had fit the lambda sensor on the standard connector of my sierra 4*4, how verify if the signal is good ?
- on my l8 , i can turn clockwise and anti clockwise infinite, it's nomal ??? do you have a stop when you turn clockwise ?
regards
i had fit siemens 55, lambda and closed loop chip and i have some questions:
- on bosch injectors, you have a plastic cap on the bottom of the injectors, does i need to fit one on the siemens ?
- i had fit the lambda sensor on the standard connector of my sierra 4*4, how verify if the signal is good ?
- on my l8 , i can turn clockwise and anti clockwise infinite, it's nomal ??? do you have a stop when you turn clockwise ?
regards
Lambda signal goes to pin 2 of the ecu.
Rotate the screw 4 turns clockwise and then 1.5turns anticlockwise, that position should be fine. They do not have any mechanical stop.
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