AEM Infinity Quick Start Guide NA

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P rim ary  In je cto r F lo w  S ele ctio n
T his  d ata base a llo w s th e u ser to  s ele ct p ro per p rim ary  in je cto r flo w  d ata . 
I n jF lo w Rate  [c c/s ec], 1 -A xis  lo okup ta ble  o f  flo w  v s  in je cto r p re ssure .
I n jO ffs et [u s/1 0], 2 -A xis  lo okup ta ble  o f  P W  o ffs et v s  b atte ry  v o lt a ge a nd in je cto r p re ssure
S eco ndary  In je cto r F lo w  S ele ctio n
I f  S econdary  In je cto rs  w ere  s ele cte d in  th e In je cto r S etu p W iz ard , th is  S econdary  In je cto r F lo w  S ele ctio n d ata base
w ill  b e e nable d. T his  a llo w s th e u ser to  s ele ct p ro per s econdary  in je cto r flo w  d ata .
I n jS ecF lo w Rate  [c c/s ec], 1 -A xis  lo okup ta ble  o f  flo w  v s  in je cto r p re ssure .
I n jS ecO ffs et [u s/1 0], 2 -A xis  lo okup ta ble  o f  P W  o ffs et v s  b atte ry  v o lt a ge a nd in je cto r p re ssure 
						

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n fin ity  Q uic k S ta rt G uid e
N O TE : If  th e S etu p W iz ard  d oes n ot c onta in  y our s pecific  fu el  in je cto r ty pe, y ou c an m odify  th e In jF lo w Rate  ta ble
m anually . If  y ou d o n ot k now  th e d iffe re nt flo w  ra te s a t d iffe re nt fu el  p re ssure s, c hoose a  flo w  ra te  (b ased o n
M anufa ctu re rs  s pecs) a t a  k now n p re ssure  a nd p opula te  th e e ntir e  ro w  w it h  th at v a lu e. F or e xam ple , y ou h ave  a
f u el  in je cto r th at is  n ot lis te d in  th e W iz ard  S ele ctio n. Y ou k now  th at it  flo w s 4 75 c c/m in  a t 4 5 p si.  S ele ct th e c ells
i n  th e u pper ro w  o f  th e In jF lo w Rate  [c c/m in ] ta ble  a nd m anually  in put 4 75. T his  w ill  s uffic e to  g et th e c ar u p a nd
r u nnin g, th ough p ro per flo w  d ata  is  id eal.
            
       
                  
Set T hro ttle  R ange
T he w iz a rd  d is p la ys a  w arn in g m essa ge to  th e u se r if th e s o ftw are  is  n ot c o nnecte d to  a  h ard w are
t a rg et.
L iv e  T P S V olts
T ext a nd g ra phic al  re pre senta tio n o f  th e ra w  a nalo g v o lt a ge is  s how n. 
						

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S te ps
S et T P S V olts  M in
P re ss th is  b utto n w hen th e th ro ttle  p edal  is  fu lly  re le ased. T his  w ill  w rit e  th e c urre nt v a lu e o f  A nalo g7 [V ] to
t h e T hro ttle _ra w  [% ] A nalo g In  c ondit io ner a nd d is pla y th e re sult a nt v a lu e o n th e T P S M in  V olt s : X .X X
d is pla y.
S et T P S V olts  M ax
P re ss th is  b utto n a ft e r th e th ro ttle  p edal  is  fu lly  d epre sses. T his  w ill  w rit e  th e c urre nt v a lu e o f  A nalo g7 [V ] to
t h e T hro ttle _ra w  [% ] A nalo g In  c ondit io ner a nd d is pla y th e re sult a nt v a lu e o n th e T P S M ax V olt s : X .X X
d is pla y.
Ig nitio n S yn c
T he e ngin es  ig nit io n tim in g m ust b e s ynchro niz ed w it h  th e In fin it y  T uners  ig nit io n tim in g d is pla y. T his  is  c ru cia l
w it h  o ld er v e hic le s th at h ave  a dju sta ble  d is trib uto rs , a dju sta ble  c am  a ngle  s ensors , e tc . M ost m odern  e ngin es d o
n ot u tiliz e a  m anual  a dju stm ent fo r ig nit io n tim in g. H ow eve r, th is  w iz ard  s hould  a lw ays b e u sed fo r v e rific atio n a s
s ensors  c an b e fr e quently  in sta lle d b ackw ard s o r u psid e d ow n. T his  c an c atc h a  p ro ble m  b efo re  d am age o ccurs .
N ote : T his  w iz a rd  c a n o nly  b e u se d w hen th e e ngin e s p eed is  g re ate r th an 5 0 R PM .  T he ig nitio n tim in g
w ill a uto m atic a lly  u nlo ck w hen th e w in dow  is  c lo se d r e ve rtin g b ack to  th e n orm al c a lc u la te d v a lu e.  
						

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n fin ity  Q uic k S ta rt G uid e
I g nitio n T im in g
F or s ynchro niz in g, th e ig nit io n tim in g c an b e lo cked b y c heckin g th e b ox. 
A llo w able  v a lu es: M in  v a lu e =  0 , M ax v a lu e =  4 5
S yn c A dju stm ent
T he w in dow  in clu des 4  b utto ns. T w o b utto ns a re  u sed to  A dva nce T im in g a nd T W O b utto ns a re  u sed to
R eta rd  T im in g.
T he b utto n la bele d L arg e e dit s  th e C am SyncA dju stm ent T rig O ffs et [d egB TD C] c hannel  in  1 .0  d eg s te ps. T he
r a nge is  0  to  7 19 d egre es. T he b utto n la bele d S m all  e dit s  th e T rig O ffs et [d egB TD C] c hannel  in  0 .1  d eg
s te ps. 
T he T rig O ffs et [d egB TD C] is  a dju sta ble  b y R esolu tio n. T he R esolu tio n s ettin g h as a  ra nge o f  0 .2 5 d eg to  2 .0
d egre es in  0 .2 5 d egre e in cre m ents . T his  “s te ppin g” fu nctio n a llo w s th e u ser to  m ake T rig O ffs et [d egB TD C]
a dju stm ents  w it h  th e S m all  b utto n u p to  th e ra nge lim it .
A dva nce d S etu p
P ic ku p s e nso r d ela y
T he M ore  a nd L ess b utto ns in cre ase/d ecre ase th e S pkD ela yC om p [u s] v a lu e in  in cre m ents /d ecre m ents  o f
5 . 
M in  v a lu e =  0 , M ax v a lu e =  5 00
T w o s epara te  p ro cedure s a re  re quir e d d ependin g o n th e In fin it y  a pplic atio n: P lu g a nd P la y o r U niv e rs al  A pplic atio n.
P lu g a nd P la y
a . In  th e Ig nit io n S ync w iz ard , s ele ct th e c heckbox “L ock ig nit io n tim in g a t” a nd s et th e “d egre es B TD C” (1 0.0  d eg
B TD C is  th e d efa ult ). 
b . Sta rt th e e ngin e a nd u se a  tim in g lig ht to  v e rify  th at th e c ra nkshaft  tim in g m atc hes th e lo cked ig nit io n tim in g
s et p oin t (1 0.0  d eg B TD C if  u sin g th e d efa ult  s ettin g). 
c . If  th ere  is  a  d evia tio n b etw een th e lo cked s et p oin t a nd th e a ctu al  tim in g o bserv e d w it h  th e tim in g lig ht, u se th e
S ync A dju stm ent a rro w s to  m atc h th e w iz ard -d is pla yed v a lu e w it h  th e a ctu al  v a lu e. A s th e S ync A dju stm ent
a rro w s a re  a dva nced o r re ta rd ed, th e tim in g o bserv e d o n th e c ra nkshaft  w ill  c hange, w hile  th e “L ock ig nit io n
t im in g a t 1 0.0  d egre es B TD C” w ill  re m ain  c onsta nt.
U niv e rs a l A pplic a tio n
a . In  th e Ig nit io n S ync w iz ard , s ele ct th e c heckbox “L ock ig nit io n tim in g a t” a nd s et th e “d egre es B TD C” (1 0.0  d eg
B TD C is  th e d efa ult ). 
b . Do N O T a tte m pt to  s ta rt th e e ngin e. D is able  (u nplu g) th e fu el  in je cto rs  a nd/o r fu el  p um p. 
c . While  c ra nkin g th e e ngin e, u se a  tim in g lig ht to  v e rify  th at th e c ra nkshaft  tim in g m atc hes th e lo cked ig nit io n
t im in g s et p oin t (1 0.0  d eg B TD C if  u sin g th e d efa ult  s ettin g). 
d . If  th ere  is  a  d evia tio n b etw een th e lo cked s et p oin t a nd th e a ctu al  tim in g o bserv e d w it h  th e tim in g lig ht, u se th e
S ync A dju stm ent a rro w s to  m atc h th e w iz ard -d is pla yed v a lu e w it h  th e a ctu al  v a lu e. A s th e S ync A dju stm ent
a rro w s a re  a dva nced o r re ta rd ed, th e tim in g o bserv e d o n th e c ra nkshaft  w ill  c hange, w hile  th e “L ock ig nit io n
t im in g a t 1 0.0  d egre es B TD C” w ill  re m ain  c onsta nt.
e . Reconnect th e fu el  in je cto rs  a nd fu el  p um p.
f . Once th e re m ain in g S etu p W iz ard s h ave  b een c onfig ure d, re peat th e Ig nit io n S ync p ro cess w it h  th e e ngin e
r u nnin g to  e nsure  th at th e c ra nkshaft  tim in g m atc hes th e lo cked ig nit io n tim in g s et p oin t. 
						

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M
odifie d V alu es
C alib ra tio n ta ble  c hanges th at h ave nt  b een c om mit te d to  fla sh m em ory  a re  h ig hlig hte d a s s how n b elo w . C ondit io ns
t h at w ill  re set th e d is pla y a re  a s fo llo w s:
1 . M anually  c om mit tin g c hanges th ro ugh th e T arg et >  C om mit  m odific atio ns m enu c om mand
2 . M anually  c om mit tin g c hanges u sin g th e h ot k ey c om bin atio n [C trl  S hift  C ]
3 . O penin g a nd c lo sin g th e S etu p W iz ard .  N ote  th e S etu p W iz ard  a uto m atic ally  c om mit s  A LL c hanges to  m em ory
e ve ry  tim e it  is  c lo sed.
4 . T urn in g th e ig nit io n s w it c h o ff  w hen th e tu nin g p re fe re nce K ey O ff  C om mit  is  s ele cte d      
						

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n fin ity  Q uic k S ta rt G uid e
R ig ht C lic k E ditin g
T o u se th e rig ht c lic k m enu fo r e dit in g ta ble  v a lu es, s ele ct a  p ortio n o f  th e ta ble  a nd rig ht c lic k.  C hoose fr o m
a va ila ble  o ptio ns.
VE &  A ir flo w  B ase d T unin g
T he In fin it y  E CU u ses s ig nific antly  d iffe re nt m eth ods o f  c alc ula tin g th e fu el  d eliv e ry  re quir e m ents  a nd o utp uts  th an
p re vio us A EM  p ro ducts . 
M easure d d ata  fr o m  s ensors , i. e ., M anifo ld  A bsolu te  P re ssure  (M AP [k P a]), A ir  T em pera tu re , C oola nt
T em pera tu re , a nd E ngin e R PM , a re  a cquir e d. T he E CU u ses th is  s ensor d ata  in  c om bin atio n w it h  V olu m etric
E ffic ie ncy (V E% ) to  e stim ate  a ir flo w . 
T he V olu m etric  E ffic ie ncy is  a  p erc enta ge o f  a ir  a nd fu el  th at a ctu ally  e nte rs  th e c ylin der d urin g in ductio n re la tiv e  to
t h e v o lu m etric  c apacit y  (ra te d d is pla cem ent) o f  th e c ylin der u nder s ta tic  c ondit io ns. T he V E lo okup ta ble  is  a  2 -a xis
l o okup ta ble , w it h  lo ad v a lu es (ty pic ally  M AP [k P a]) v e rs us E ngin e R PM . In  e ach ta ble  c ell,  th e E ngin e R PM
c orre sponds w it h  a  s pecific  M AP [k P a], a nd a  V olu m etric  E ffic ie ncy is  d efin ed fo r th at c ell.   
						

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T he V olu m etric  E ffic ie ncy is  c om bin ed w it h  te m pera tu re  s ensor d ata  to  e stim ate  a  c om pensate d M ass A ir flo w . T he
C harg eTem pB le nd ta ble  d ic ta te s w hat ra tio  o f  a ir  te m pera tu re  to  c oola nt te m pera tu re  is  u sed a t s pecific  E ngin e
R PM  to  a dju st th e d ensit y  o f  th e in ducte d a ir . A  h ig her n um ber g iv e s p rio rit y  to  C oola nt T em pera tu re , a nd is  s een
a t lo w er E ngin e R PM .
O nce M ass A ir flo w  h as b een c alc ula te d u sin g th e ta ble s a bove , th e In fin it y  E CU w ill  lo ok u p th e T arg et L am bda
( A FR ) a nd th en c alc ula te  th e fu el  re quir e m ents . T arg et A FR  w ill  b e u sed a s a  m ain  p ara m ete r in  d ete rm in in g fu el
i n je cto r flo w  ra te . T he L am bdaTarg etT able  (b elo w  L eft ) a nd A FR  T arg et T able  c onve rs io n ta ble  (b elo w  R ig ht) w ill
h ave  d efa ult  v a lu es. B ased o n th e c alc ula te d M ass A ir flo w , th e In fin it y  E CU w ill  a tte m pt to  a dd e nough fu el  to  h it
t h e ta rg et A FR . 
N ote : T he c alc ula te d L am bdaTarg et in flu ences th e fu el  d eliv e re d to  th e e ngin e a t a ll  tim es, e ve n w hen c lo sed-lo op
0 2 fe edback is  d is able d. 
  
						

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n fin ity  Q uic k S ta rt G uid e
        
T he s uggeste d tu nin g m eth od is  to  s et th e A FR  u sin g th e L am bdaTarg etT able  o r A FR  T arg et T able  to  a  v a lu e s afe
a nd s uit a ble  fo r th e e ngin e. F or n orm ally  a spir a te d e ngin es a  v a lu e o f  1 3.0 :1  o r 0 .8 87 la m bda is  u sually  s uffic ie nt a t
a ll  o pera tin g c ondit io ns. F or b ooste d a pplic atio ns, th e o pera tin g c ondit io ns d ic ta te  a  s afe  A FR . P le ase c onsult  a
t u ner k now le dgeable  in  y our e ngin e’s  re quir e m ents  fo r h elp . O nce th e ta rg et la m bda (A FR ) v a lu es a re  c hosen, ru n
t h e e ngin e a t a s m any o pera tin g c ondit io ns a s p ossib le  a nd a dju st th e V E T able  to  re ach th e A FR  T arg et T able
v a lu es. O nce th e V E T able  h as b een tu ned to  a ccura te ly  re ach th e A FR  T arg et T able  v a lu es a t a ll  o pera tin g
r a nges, th en y ou c an c hange th e A FR  T arg et T able  to  u se d iffe re nt A FR  s ettin gs la te r. N eve r a dju st V ETable  to  ru n
a  d iffe re nt A FR , o nly  to  a chie ve  th e L am bdaTarg et v a lu e.
T he In je cto r F lo w ra te  is  v e ry  im porta nt in  d ete rm in in g th e fu el  re quir e m ents . T he In fin it y  E CU u ses a ctu al  In je cto r
F lo w ra te  [c c/m in ] to  d ete rm in e th e p ro per in je cto r p uls e w id th . T he In jF lo w Rate  [c c/m in ] ta ble  is  c alib ra te d fr o m  th e
S etu p W iz ard : In je cto r F lo w , h ow eve r th e ta ble  c an b e m odifie d m anually  fo r u nlis te d in je cto rs .  
						

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© 2 015 A EM  P erfo rm ance E le ctr o nic s
N ow  th at th e b ase in je cto r flo w  ra te  h as b een d ete rm in ed, th e In fin it y  E CU a pplie s a  fe w  m ore  c om pensatin g
f a cto rs . W all  W ettin g is  a  fu nctio n o f  fu el  c ondensin g in  th e in ta ke m anifo ld  a t th e in je ctio n p oin t. A t d iffe re nt ra te s
o f  c hange in  th e M AP [k P a] v a lu es, a nd a t d iffe re nt C oola nt T em pera tu re s, fu el  e nric hm ent c om pensatio ns a re
u sed to  p re ve nt le an a nd ric h c ondit io ns d urin g ra pid  m anifo ld  p re ssure  c hanges. N ote  th at th is  ta ble  h as s eve ra l
d iffe re nt fu nctio ns. It  c an b e u sed fo r d ynam ic  tra nsie nts  b y n atu re  o f  it s  “M AP R ate ” x -a xis . It  c an a ls o b e u sed fo r
m ore  s te ady s ta te  c om pensatio ns b y a dju stin g th e v a lu es in  th e “m id dle  b and” o f  th e ta ble  w here  M AP ra te
c hanges a re  v e ry  s m all.   P osit iv e  n um bers  in  th is  ta ble  w ill  e ffe ctiv e ly  a dd fu el  to  e nric hen th e m ix tu re . N egativ e
n um bers  h ave  th e o pposit e  e ffe ct.    
T he X  a nd Y  a xis  in puts  o f  th e W allW ettin g ta ble  c an b e s et to  s eve ra l  d iffe re nt v a ria ble s. T hese s ettin gs a re  fo und
i n  th e S etu p W iz ard  p age fo r A ccel  a nd D ecel  F uel.  A xis  s ele ctio ns in clu de:
M ap R ate
T hro ttle  R ate
C oola nt T em p
M AP [k P a]
E ngin eS peed [R PM ]
D BW _A PP R ate 
						

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n fin ity  Q uic k S ta rt G uid e
L am daA fte rS ta rtT rim  is  a  2 -a xis  ta ble  th at is  u sed to  m odify  th e L am bda (A FR ) fo r s pecifie d tim e a ft e r s ta rtin g
t h e e ngin e. T his  ta ble  a dds a  la m bda o ffs et fo r a  s m all  p erio d o f  tim e a ft e r th e e ngin e is  s ta rte d. B y a llo w in g a
s lig htly  ric her m ix tu re  ta rg et, it  w ill  k eep th e e ngin e fr o m  s ta llin g o r ru nnin g ro ugh im media te ly  a ft e r s ta rtin g a nd th e
l a m bda c orre ctio n to  a  m in im um . T he la st c olu m n s hould  b e p opula te d w it h  “0 ” trim  a t o pera tin g te m pera tu re s to
p re ve nt a  c ontin uous la m bda o ffs et.
Targ et L am bda
T o c ontro l  th e e ngin es  fu el  d eliv e ry  s yste m , th e In fin it y  c an b e p ro gra m med to  ru n o pen lo op a nd/o r c lo sed lo op O 2
f e edback. C lo sed lo op u ses fe edback fr o m  th e o xygen s ensor to  m ake te m pora ry , b ut im media te , c orre ctio ns to
t h e in je ctio n to  m ain ta in  a  ta rg et a ir  fu el  ra tio  (A FR ) o r la m bda. T he ty pe o f  th e O 2 s ensor w ill  d ete rm in e h ow
l a m bda ta rg et c an b e c ontro lle d. D ue to  th e n atu re  o f  s ta ndard  n arro w  b and O 2 s ensors , th e o nly  a ccura te
m easure m ent th at c an b e m ain ta in ed in  c lo sed lo op is  L am bda 1 .0 . H ow eve r, w id eband O 2 s ensors  c an b e u sed in
a lm ost e ve ry  fe edback c ondit io n.