ATM 33.50 (Exhaust Gas Temperature Model) - Revision history

TTQS at 18:15, 8 January 2012

2012-01-08T18:15:40Z

TTQS at 18:09, 8 January 2012

2012-01-08T18:09:46Z

TTQS at 18:08, 8 January 2012

2012-01-08T18:08:27Z

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TTQS at 18:01, 8 January 2012

2012-01-08T18:01:54Z

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TTQS at 17:50, 8 January 2012

2012-01-08T17:50:11Z

TTQS at 14:54, 11 October 2011

2011-10-11T14:54:43Z

MattDanger at 22:04, 29 September 2011

2011-09-29T22:04:30Z

TTQS at 10:59, 12 September 2011

2011-09-12T10:59:26Z

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TTQS at 10:55, 12 September 2011

2011-09-12T10:55:39Z

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TTQS at 10:53, 12 September 2011

2011-09-12T10:53:11Z

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@@ Line 3: / Line 3: @@
 atm-main
-atm-atm-b1 Exhaust gas temperature model (cylinder
+atm-atm-b1 Exhaust gas temperature model (cylinder bank 1) overview
 bank 1) overview
 atm-tmp-stat TMP_STAT engine speed &amp; relative cylinder charge map and corrected for temperature for acceleration, intake air temp., catalyst heating, catalyst warming, ignition angle, lambda and cold engine
@@ Line 37: / Line 36: @@
 atm-mst If tabst_w is not correct tabstatm = maximum value, request for delay B_nlatm as a function of engine speed and tatu-threshold)
 The simulated exhaust gas temperatures tabgm and tabgkrm (for SY_TURBO = 1) and catalytic converter

@@ Line 831: / Line 831: @@
 ZATMAML
 ml_w/kg/hr, Time constant/sec 10, 30 ; 20, 20 ; 40, 13 ; 80, 5 ; 180, 4 ; 400, 3 ; 600, 2 ;
 ZATMKML
 ml_w/kg/hr, Time constant/sec 10, 150 ; 20, 60 ; 40, 35 ; 80, 20 ; 180, 10 ;
 , 7 ; 600, 4 ;
 ZATMIKML
 value represents approximately ZATMKML x 0.3
 ZATMKKML
 for neutral input, the data must correlate to ZATMKML
 ZATMIKKML
 for neutral input, the data must correlate to ZATMIKML
 ZATMRML
 ml_w/kg/hr, Time constant/sec 10, 300 ; 20, 80 ; 40, 55 ; 80, 30 ; 180, 20 ; 400, 10 ; 600, 7 ;
 FATMRML
 ml_w/kg/hr, Time constant/sec 10, 0.5 ; 20, 0.6 ; 40, 0.7 ; 80, 0.8 ; 180, 0.95 ; 400,0.95 ; 600, 0.96;
 KATMEXML
 ml_w/kg/hr, Time constant/sec 10, 0 ; 20, 0 ; 40, 0 ; 80, 0 ; 180, 0 ; 400, 0 ;
 KLATMZWE
 etazwimt, Factor 1, 0 ; 0.95, 0 ; 0.9, 0 ; 0.8, 0 ; 0.7, 0 ; 0.6, 0 ;
 KLATMLAE
 lamsbg_w, Factor 1.15, 0 ; 1 , 0 ;0.95, 0 ; 0.9, 0 ; 0.8, 0 ; 0.7, 0 ;
@@ Line 868: / Line 878: @@
 KATMIEXML
 ml_w/kg/hr, Time constant/sec 10, 0 ; 20, 0 ; 40, 0 ; 80, 0 ; 180, 0 ; 400, 0 ;
 KLATMIZWE
 etazwimt, Factor 1, 0 ; 0.95, 0 ; 0.9, 0; 0.8, 0 ; 0.7, 0 ; 0.6, 0 ;
 KLATMILAE
 lamsbg_w, Factor 1.15, 0 ; 1 , 0 ;0.95, 0 ; 0.9, 0 ; 0.8, 0 ; 0.7, 0 ;

← Older revision		Revision as of 17:50, 8 January 2012
Line 142:		Line 142:


−	The dew point end time is approximately proportional to the heat quantity after engine start. The heat quantity = Integral (temp. ´ air mass ´ C<sub>p</sub>) is calculated from the steady-state exhaust gas temperature tatmsta plus TATMWMK multiplied by the air mass. The result of the integration multiplied by the heat capacity at constant pressure C<sub>p</sub> (approximately 1 kJ/kgK) gives the heat quantity.	+	The dew point end time is approximately proportional to the heat quantity after engine start. The heat quantity = Integral (temp. x air mass x C<sub>p</sub>) is calculated from the steady-state exhaust gas temperature tatmsta plus TATMWMK multiplied by the air mass. The result of the integration multiplied by the heat capacity at constant pressure C<sub>p</sub> (approximately 1 kJ/kgK) gives the heat quantity.

@@ Line 1,131: / Line 1,131: @@
 ATMTANS tatu/°C, Temp./°C -40, 60 ; -10, 20 ; 20, 0 ;
 TATMSA: 100°C
 TATMKH: 80°C
 TATMTRKH: 200°C
 TATMKW: 100°C
 TATMTMOT: 90°C
 TATMSTI: 20°C
 TASTBFA: 40°C
-TKSTBFA:
+TKSTBFA: 40°C
 °C
-−
-TATMWMK:
+TATMWMK: -80°C
 -80°C
-−
-WMABGKH:
+WMABGKH: Factor of 1.0
 Factor of 1.0
-−
-WMKATKH
+WMKATKH: Factor of 1.0
 Factor of 1.0
-−
-FWMABGW
+FWMABGW: Factor of 0.25
 Factor of 0.25
-−
-FWMKATW
+FWMKATW: Factor of 0.25
 Factor of 0.25
-−
-DTUMTAT:
+DTUMTAT: 20°C
 °C
-−
 VTUMTAT: 40 km/h
 NTUMTAT: 1800 rpm
 IMTUMTAT: 1 kg
 TUMTAIT: 20°C
 TNLATMTM: 80°C
 TNLATMTU: 5°C
 TNLATM: 660 seconds
 Only when SY_TURBO = 1:
-For
+For neutral input (tabgkrm_w = tabgm_w)
 neutral input (tabgkrm_w = tabgm_w)
-−
 KFATMKR = KFTATM
 KFATZWK = KFATMZW
 KFATLAK = KFATMLA
 TATMKRSA = TATMSA
 ZATRKRML = ZATMRML
 ZATAKRML = ZATMAML
-FATRKRML
+FATRKRML = FATMRML
 = FATMRML
-−
 ATMTANS
@@ Line 1,236: / Line 1,196: @@
-The
+The functional data for cylinder bank 2 correspond to the functional data from cylinder bank 1 Note:
 functional data for cylinder bank 2 correspond to the functional data from cylinder
 bank 1 Note:
-In
+In order that ATM 22:20 for the application is backward compatible the default values should be entered thus: &#8203;&#8203;KATMEXML, KLATMZWE, KLATMLAE, TKATMOE = 0 and TABGMEX = 1220°C.
 order that ATM 22:20 for the application is backward compatible the default
 values should be entered thus: &#8203;&#8203;KATMEXML, KLATMZWE, KLATMLAE, TKATMOE = 0 and TABGMEX = 1220°C.
-In
+In order that ATM 33.10 remains application-neutral with ATM 22.50, TATMTRKH must be set equal to TATMKH and WMKATKH should be set equal to 1. Tikatm is not used in a function because the input can be used in the path in the exhaust gas temperature model without impact on safety, however, the default values for &#8203;&#8203;KATMIEXML, KLATMIZWE, KLATMILAE and TIKATMOE should be set equal to 0 and TABGMEX = 1220°C.
 order that ATM 33.10 remains application-neutral with ATM 22.50, TATMTRKH must
 be set equal to TATMKH and WMKATKH should be set equal to 1. Tikatm is not used
 in a function because the input can be used in the path in the exhaust gas
 temperature model without impact on safety, however, the default values for &#8203;&#8203;KATMIEXML,
 KLATMIZWE, KLATMILAE and TIKATMOE should be set equal to 0 and TABGMEX = 1220°C.

← Older revision		Revision as of 22:04, 29 September 2011
Line 2,472:		Line 2,472:
	bank 2		bank 2
	\|}		\|}
		+
		+	[[Category:ME7]]