Process for Generating Engine Fuel Consumption Map
(Ricardo Cooled EGR Boost 24-bar Standard Car Engine Tier 2 Fuel) Version: 06-20-2016
This document summarizes the process followed to utilize the fuel consumption map of a Ricardo
modeled engine and vehicle fuel consumption data to generate a full engine fuel consumption map
which can be used by EPA's ALPHA vehicle simulations. The original Ricardo engine modeling, simulated
as a 27-Bar downsized boosted engine with cooled EGR, was completed as part of the final rulemaking
for MY2017-2025 light duty greenhouse gas standards. The map generated defines the complete
operating boundaries of the engine needed for ALPHA modeling, including idle, WOT, minimum torque,
and maximum speed.
Gather Engine Physical Characteristics
Source: GE118_lnput_Data_Review_v38_-_SI_for_EPA.pdf- Slide 15
Note: This process generates a fuel consumption map for a 24-bar engine based upon the Ricardo
simulated 27-Bar downsized boosted with cooled EGR.
engine.name = 'Ricardo 27 Bar EGR Boost DI with Cam Switching for Std Car';
engi ne . combusti on_type = enurruengi ne_combusti on_type . spark_i gni ti on;
engine.displacement_L = 1.04;
engine.nurrucylinders = 3;
Note: The inertia is estimated from Ricardo's WOT simulation "standard_car_EGRB_Nominal.WOT.csv"
using output torque from the "TS_RigidOut_BE" variable and acceleration calculated from engine speed
"OM_PostProcess_BE" variable.
engi ne .i nerti a_kgm2 = 0.075;
Load Simulation Data
Source: standard_car_EGRB_Nominal.FTP.csv
Source: standard_car_EGRB_Nominal.HWFET.csv
Source: standard_car_EGRB_Nominal.US06.csv
Note: Load output data from Ricardo's EASY5 simulations for FTP, HWFET and US06, and remove zero
fuel points related to simplistic start stop implementation.
ftp_data = readtable( '../data\raw\2020 EGRB with
AT\standard_car\EGRB\standard_car_EGRB_Nominal.FTP.csv','Headerlines',4 );
hwfet_data = readtable( '../data\raw\2020 EGRB with
AT\standard_car\EGRB\standard_car_EGRB_Nominal.HWFET.csv','Headerlines',4 );
us06_data = readtable( '../data\raw\2020 EGRB with
AT\standard_car\EGRB\standard_car_EGRB_Nominal.US06.csv','Headerlines',4 );
fuel_data.shaft_torque_Nm = [ftp_data.TA_RigidOut_BE; hwfet_data.TA_RigidOut_BE;
us06_data.TA_RigidOut_BE] ;
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-------
Process for Generating Engine Fuel Consumption Map
(Ricardo Cooled EGR Boost 24-bar Standard Car Engine Tier 2 Fuel) Version: 06-20-2016
fuel_dat:a. speecLrpm = [ftp_data.OM_PostProcess_BE; hwfet_data.OM„PostProcess_BE;
us06_data.OM_PostProcess_BE];
fuel_data.fuel_gps = [ftp_data. Fuel_rate_out_hot; hwfet_data.Fuel_rate_out_.hot;
us06_data,Fuel_rate_out_hot];
fuel_dat:a.accessory_power_W = [ftp_data. PowerAccessoryLoad_FOl0;
hwfet_data.PowerAccessoryLoad_FOl0; us06_data.PowerAccessoryLoad_FOl0];
% Compute gross engine torque (shaft and accessories)
fuel_dat:a.torque_Nm = fuel_data.shaft_torque_Nm + fuel_data.accessory_power_W ./ (
fuel_data.speed_rpm * convert.rpm2radps) ;
Load Ricardo Map Images
Source: GE118_lnput_Data_Review_v38_-_SI_for_EPA.pdf- Slide 15
Note: Images are for a nominal 2.4L 14 and must be scaled to matching displacement and number of
cylinders using Ricardo Scaling methodology "Scaling_Metholodogy_review_v07.pdf" A BSFC correction
was applied as engine displacements were changedbased on a Ricardo study. This correction was
predominantly a correction of thermal losses relative to combustion system surface-to-volume ratio.
The following is an example of a 2.4L. 240 kW 1-4 map for this technology
~ This engine technology is used in all seven vehicle classes. The reference displacement and engine configurations are as
follows:
Small Car: 0.69L (13). Standard Car: 1.04L (13), Small MPV: 1.16L (13), Full Sized Car: 1.58L (14), Large MPV: 1.51L
(14), LDT: 2.34L (V6), HLDT: 2.46L (V6)
EGR Boost Dl with Cam Switching
1000 2000 3OT0 4000 5000 6000
RPM
1000 2000 3000 4000 5000 6000
RPM
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-------
Process for Generating Engine Fuel Consumption Map
(Ricardo Cooled EGR Boost 24-bar Standard Car Engine Tier 2 Fuel) Version: 06-20-2016
BSFC Increase with Displacement Ratio
Displacement Ratio (New/Baseline)
% Ricardo Scale adjustments
scale_factor = engine.displacement_L / 2.4;
cyli nder_scale_f actor = (engi ne .di splacement_L / engine, nurrucyli nders) / ( 2.4 / 4 );
scale_bsfc = @(s) -0.1058.*s.A3 + 0.3458.*s.A2 + -,4565.*s + 1.2164;
image_data.torque_Nm = image_data.torque_Nm * scale_factor;
image_data.fuel_gps = image_data.fuel_gps * scale_factor * scale_bsfc(cylinder_scale_factor);
Obtain Maximum Torque (WOT) Curve Data
Source: GE118_lnput_Data_Review_v38_-_SI_for_EPA.pdf - Slide 15
load('../data\map_image_points\2.4_EGRB_Dl_tc_pts.mat');
WOT_data.speed_rpm = tc(:,l);
WOT_data.torque_Nm = tc(:,2) * scale_factor;
di sp(struct2table(WOT_data))
soeed rom
toraue Nm
617.4
63.466
779.87
71.903
1005.2
125.97
1482.2
219.93
4511.5
219.93
4999
199.6
6010.5
165.86
6602.7
147.06
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National Vehicle and Fuel Emissions Laboratory - Office of Transportation and Air Quality — U.S. EPA
-------
Process for Generating Engine Fuel Consumption Map
(Ricardo Cooled EGR Boost 24-bar Standard Car Engine Tier 2 Fuel) Version: 06-20-2016
Obtain Minimum Torque (Motoring) Curve Data
Source: standard_car_EGRB_Nominal.FTP.csv
Source: standard_car_EGRB_Nominal.FIWFET.csv
Source: standard_car_EGRB_Nominal.US06.csv
Note: These Ricardo simulations were completed as part of the final rulemaking for MY2017-2025 light
duty greenhouse gas standards and provide a record of engine characteristics, including the motoring
curve. The simulation included operation along the motoring curve that was analyzed to construct
minimum torque curve.
Obtain Fuel Properties
Source: Ricardo file 2020 Camry EGRB nominal rev30.xlsm
• Fleating value: 44.0 MJ/kg
• Specific Gravity: 0.739
• Specific C02: 9087 g/gal
Note: Fuel and associated fuel map data are normalized to a standard fuel when conducting technology
assessments
%Load from fuel database
engine.fuel = class_REVS_fuel('RICARD0_GAS0LINE');
di sp( engi ne.fuel );
class_REVS_fuel with properties:
id: 'RICARDO_GASOLINE'
description: 'Estimated Ricardo Gasoline'
density_kgpl 15c: 0.73829
energy_density_MJpkg: 44
carbon_weight_fraction: 0.88651
anti_knock_index: []
research_octane_number: []
motor_octane_number: []
cetane_number: []
alcohol_pct_vol: 0
gC02pgal: 9087
energy_density_BTUpl bm: 18917
specific_gravity: 0.739
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National Vehicle and Fuel Emissions Laboratory - Office of Transportation and Air Quality — U.S. EPA
-------
Process for Generating Engine Fuel Consumption Map
(Ricardo Cooled EGR Boost 24-bar Standard Car Engine Tier 2 Fuel) Version: 06-20-2016
Calibrate Idle Fuel Consumption and Define Idle Speed
Source: standard_car_EGRB_Nominal.FTP.csv
Simulation included idle operation that was analyzed to determine idle speed and fuel consumption.
engine.idle_speed_radps = 789 * convert.rpm2radps ;
Build Fuel Consumption Map
Notes: Generate fuel map and WOT curves using REVS_build_engine with default settings. This map
defines the complete operating boundaries of the engine needed for ALPHA modeling, including idle,
WOT, minimum torque, and maximum speed.
out_speed = [0:200:3000,3500:500:7000] * convert.rpm2radps;
out_torque = -50:10:230;
engine = REVS_bui ld_engi ne(engi ne , fuel_data ,WOT_data , [] ,
'out_speed',out_speed,'out_torque',out_torque,'no_poi nt_labels');
Set Model Calibration Options
Note: These parameters influence particular behaviors within the ALPHA model. They often do not have
a corresponding value with test data, but are calibrated to match observed behavior.
Accelerator pedal maps to engine power - standard for passenger cars
engi ne . pedal_map_type = enurruengi ne_pedal_map_type .max_engi ne_power;
Note: Simulation data exhibited substantial reductions in fueling rate during upshifting
engine.fast_torque_fuel_adjust_norm = 1.0;
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National Vehicle and Fuel Emissions Laboratory - Office of Transportation and Air Quality — U.S. EPA
-------
Process for Generating Engine Fuel Consumption Map
(Ricardo Cooled EGR Boost 24-bar Standard Car Engine Tier 2 Fuel) Version: 06-20-2016
Generate File for 27-Bar Engine
write_REVS_engine( 'engine_std_car_EGRB27.m', engine);
REVS_plot_engine_bsfc( engine, 'show_bmep','no_min_bsfc','show_ctp_curve')
Ricardo 27 Bar EGR Boost Dl with Cam Switching for Std Car BSFC ( g/kW*hr)
180 kW
165 kW
150 kW
135 kW
120 kW
105 kW
90 kW
75 kW
60 kW
45 kW
30 kW
15 kW
7.5 kW
CD
m
Cl
LLJ
DO
20
1000 2000 3000 4000 5000 6000 7000
Speed (RPM)
Convert 27-Bar Engine to 24-Bar Engine
Determine torque reduction for reducing boost level from 27 Bar to 24 Bar BMEP. Apply reduction then
scale engine back up to match 27 Bar torque level. Include BSFC adjustment factor for scaling.
engine.full_throttle_torque_Nm = min( engine.full_throttle_torque_Nm, max(
engine.full_throttle_torque_Nm) * 24/27);
% Scale engine back to max torque
scale_factor = 27/24;
cylinder_scale_factor = scale_factor;
scale_bsfc = @(s) -0.1058.*s.A3 + 0.3458.*s.A2 + -,4565,-s + 1.2164;
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National Vehicle and Fuel Emissions Laboratory - Office of Transportation and Air Quality — U.S. EPA
-------
Process for Generating Engine Fuel Consumption Map
(Ricardo Cooled EGR Boost 24-bar Standard Car Engine Tier 2 Fuel) Version: 06-20-2016
engine.displacement_L = engine.displacement_L * scale_factor;
engine.full_throttle_torque_Nm = engine.full_throttle_torque_Nm * scale_factor;
engine.fuel_map_torque_Nm = engine.fuel_map_torque_Nm * scale_factor;
engine.fuel_map_gps = engine.fuel_map_gps * scale_factor * scale_bsfc(cylinder_scale_factor);
engine.name = 'Ricardo 24 Bar EGR Boost DI with Cam Switching for Std Car';
Build Fuel Consumption Map
Note: Generate fuel map and WOT curve using REVS_build_engine. This map defines the complete
operating boundaries of the engine needed for ALPHA vehicle simulations, including idle, WOT, minimum
torque, and maximum speed.
REVS_plot_engine_bsfc( engine, 'show_bmep','no_min_bsfc','show_ctp_curve')
Ricardo 24 Bar EGR Boost DI with Cam Switching for Std Car BSFC ( g/kVV*hr)
1000 2000 3000 4000 5000 6000 7000
Speed (RPM )
180 kW
165 kW
150 kW
135 kW
120 kW
105 kW
90 kW
75 kW
60 kW
45 kW
30 kW
15 kW
7.5 kW
Save Engine Consumption Map for 24-bar Engine
write_REVS_engine( 'engine_std_car_EGRB24.m' , engine);
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National Vehicle and Fuel Emissions Laboratory - Office of Transportation and Air Quality — U.S. EPA
-------
Process for Generating Engine Fuel Consumption Map
(Ricardo Cooled EGR Boost 24-bar Standard Car Engine Tier 2 Fuel) Version: 06-20-2016
Display Summary of Engine Fuel Consumption Map Information (24-bar engine)
Note: The listing below shows only the engine's fuel consumption map related information contained in
the ALPHA Engine Definition .m file for this engine. This information is a subset of the full engine
definition .m file that adds vehicle level information related to dynamic fuel use, accessories, etc.
% ALPHA ENGINE DEFINITION
% Generated 14-Jun-2016 14:10:28
% Ricardo 24 Bar EGR Boost DI with Cam Switching for Std Car
% Constructor
engine = class_REVS_engi ne() ;
engine.name = 'Ricardo 24 Bar EGR Boost DI with Cam Switching for Std Car'
% Physical Description
engine.displacement_L = 1.1700000;
engine, nurrucyli nders = 3.0000000;
engine.inertia_kgm2 = 0.075000000;
% Maximum Torque Curve
engine.full_throttle_speed_radps = [
105.26860,
629.41622,
0.00000000,
];
engine.full_throttle_torque_Nm = [
; 141.72013, ;
; 186.58739, ;
];
155.21356,
691.43578,
0.00000000,
219.92625,
165.44801,
64.654021,
472.44636,
726.00757,
71.399336,
219.92625,
153.66421,
81.668237,
523.48901,
795.15115,
80.890487,
219.92625,
0.00000000,
% Minimum Torque Curve
engine.closed_throttle_speed_radps = [ 0.00000000,
412.87544, ; 692.75447, ; 795.15115,
engine.closed_throttle_torque_Nm = [ -8.9139229, ;
; -18.189400, ; -18.189400, ];
; 72.500000,
];
-10.542676,
-18.189400,
% Fuel Map
engi ne .fuel.
83.775804,
209.43951,
366.51914,
680.67841,
engi ne .fuel.
11.250000,
56.250000,
123.75000,
191.25000,
258.75000,
,map_speed_radps =
104.71976,
230.38346,
418.87902,
733.03829,
.map_torque_Nm = [
0.00000000,
67.500000,
135.00000,
202.50000,
];
[ 0.00000000,
125.66371,
251.32741,
471.23890,
];
-56.250000,
11.250000,
78.750000,
146.25000,
213.75000,
20.943951,
41.887902,
62.831853,
146.60766,
272.27136,
523.59878,
-45.000000,
22.500000,
90.000000,
157.50000,
225.00000,
167.55161,
293.21531,
575.95865,
-33.750000,
33.750000,
101.25000,
168.75000,
236.25000,
188.49556,
314.15927,
628.31853,
-22.500000,
45.000000,
112.50000,
180.00000,
247.50000,
NCAT - National Center for Advanced Technology
National Vehicle and Fuel Emissions Laboratory - Office of Transportation and Air Quality -
U.S. EPA
8 of 11
-------
Process for Generating Engine Fuel Consumption Map
(Ricardo Cooled EGR Boost 24-bar Standard Car Engine Tier 2 Fuel) Version: 06-20-2016
engine.fuel_map_gps = [
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.031051412,
0.00000000,
0.0099777568,
0.068074569,
0.43867008,
0.00000000,
0.098176606,
0.25619076,
0.97859728,
0.0060038226,
0.17864672,
0.43568520,
1.4365871,
0.023973746,
0.25992416,
0.62074928,
1.8696364,
0.046165364,
0.34612545,
0.80922961,
2.2895543,
0.074323603,
0.43890320,
0.99375190,
2.7133795,
0.10899908,
0.53560901,
1.1667782,
3.1547234,
0.14932835,
0.63005554,
1.3469795,
3.6089612,
0.19460695,
0.73116101,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.023640757,
0.00000000,
0.014854330.
0.081460794,
0.50779435,
0.0056738052.
0.11504994,
0.28447917,
1.0588107,
0.029254893.
0.20697652,
0.47880876,
1.5548456,
0.056973292.
0.29756796,
0.68031185,
2.0333613,
0.089341051,
0.39461990,
0.88738490,
2.5133657,
0.12665594,
0.49892548,
1.0848020,
2.9969042,
0.16883150,
0.60807688,
1.2719656,
3.4922539,
0.21668533.
0.71341216,
1.4597465,
3.9912683,
0.27108704,
0.82678056,
0.00000000,
0.00000000,
0.00000000,
0.00000000, ;
0.00000000,
0.00000000,
0.00000000,
0.00000000, ;
0.00000000,
0.00000000,
0.00000000,
0.00000000, ;
0.00000000,
0.00000000,
0.00000000,
0.00042724409,
0.00000000,
0.020564273,
0.095630453,
0.54514689,
0.020025478,
0.13268328,
0.36027654,
1.1258851, ;
0.052460224,
0.23767008,
0.59437131,
1.6841286, ;
0.089708772,
0.34211326,
0.83805429,
2.2379498, ;
0.13283907,
0.45460705,
1.0880035,
2.7883816, ;
0.17936991,
0.56755020,
1.3228069,
3.3352623, ;
0.22862101,
0.68569741,
1.5504897,
3.8757596, ;
0.28384728,
0.80624648,
1.7811557,
4.4077030, ;
0.34739738,
0.93489136,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.00000000,
0.027307355,
0.13538254,
0.56384449, ;
0.034746219,
0.15303327,
0.43437044,
0.075838838,
0.27156756,
0.70011076,
0.12197395,
0.39263814,
0.97693069,
0.17708545,
0.51986327,
1.2619702,
0.23260320,
0.64165390,
1.5345664,
0.28830922,
0.77055168,
1.8066703,
0.35094925,
0.90740588,
2.0828473,
0.42347187,
1.0425993,
0.00000000, 0.00000000, 0.00000000,
0.00000000, 0.00000000, 0.00000000,
0.00000000, 0.00000000, 0.00000000,
0.00000000, 0.00000000, 0.00000000,
0.00000000, 0.00000000, 0.00000000,
0.00000000, 0.00000000, 0.00000000,
0.00000000, 0.00000000, 0.00000000,
0.00000000, 0.00000000, 0.00000000,
0.00000000, 0.00000000, 0.00000000,
0.00000000, 0.00000000, 0.00000000,
0.00000000, 0.00000000, 0.00000000,
0.00000000, 0.00000000, 0.016339118,
0.00060966657,
0.035220336,
0.17867575,
0.049862700,
0.17614318,
0.54510215,
0.10002327,
0.30985932,
0.84787605,
0.15460532,
0.44771781,
1.1595387,
0.22197428,
0.58805504,
1.4819129,
0.28537362,
0.72411553,
1.7872380,
0.34819258,
0.86700728,
2.0887295,
0.41893487,
1.0143457,
2.4007863,
0.49943107,
1.1597842,
0.0054687532,
0.044690229,
0.24669004,
0.065092595,
0.20161004,
0.69413589,
0.12555331,
0.35113389,
1.0309972,
0.19170346,
0.50480715,
1.3554486,
0.26518340,
0.65940552,
1.6915136,
0.33492114,
0.81287425,
2.0364091,
0.40839314,
0.96740226,
2.3919589,
0.48731067,
1.1228536,
2.7683803,
0.57434318,
1.2852427,
0.055713367,
0.34328939,
0.081138148,
0.22851093,
0.85783214,
0.15177565,
0.39334302,
1.2654327,
0.22697239,
0.56228224,
1.6499187,
0.30635233,
0.73318500,
2.0277254,
0.38512400,
0.90336524,
2.4157446,
0.47031848,
1.0663648,
2.8180690,
0.55642440,
1.2335033,
3.2366852,
0.65014379,
1.4112300,
NCAT - National Center for Advanced Technology 9 of 11
National Vehicle and Fuel Emissions Laboratory - Office of Transportation and Air Quality — U.S. EPA
-------
Process for Generating Engine Fuel Consumption Map
(Ricardo Cooled EGR Boost 24-bar Standard Car Engine Tier 2 Fuel) Version: 06-20-2016
1.5338098,
4.0710668,
0.24485309,
0.84718040,
1.7219619,
4.5543818,
0.30071393,
0.96845111,
1.9172692,
5.0343463,
0.36353901,
1.0959414,
2.0992289,
5.5270247,
0.43505169,
1.2418864,
2.3034171,
6.0388207,
0.51728086,
1.3955723,
2.5140336,
6.5455638,
0.61158532,
1.5452539,
2.7526205,
7.0532439,
0.71761319,
1.6910625,
3.0286946,
7.5729006,
0.83379378,
1.8442685,
3.3455446,
8.1172164,
0.95809658,
2.0048535,
3.6677325,
8.6582660,
1.0863996,
2.1683781,
3.9827019,
9.2018446,
1.2127194,
2.3351641,
4.3210606,
9.7485811,
1.3321973,
2.5121654,
4.6876208,
10.298577,
1.4399140,
1.6583786,
4.4866537,
0.33176845,
0.94489468,
1.8707427,
4.9894387,
0.39810268,
1.0648716,
2.0634611,
5.4885619,
0.47026624,
1.1995542,
2.2680014,
5.9893946,
0.54916707,
1.3632861,
2.4897122,
6.5084206,
0.63672485,
1.5336045,
2.6996829,
7.0344708,
0.73522485,
1.7067093,
2.9642874,
7.5639105,
0.84565591,
1.8748622,
3.2573992,
8.1022778,
0.96657471,
2.0444630,
3.5858241,
8.6462057,
1.0948049,
2152933,
9271243,
2012503,
1.2276388,
3952512,
2703649,
7506137,
1.3618588,
5796130,
6290916,
10.296582,
1.4925033,
2.7702002,
5.0379988,
10.838601,
1.6147592,
2.0193102,
4.9318446, ;
0.41849423,
1.0567707,
2.2696864,
5.4498829, ;
0.49539054,
1.1841683,
2.5090697,
5.9668344, ;
0.57691101,
1.3249637,
2.7569278,
6.4861184, ;
0.66346328,
1.4864448,
3.0424130,
7.0113362, ;
0.75663055,
1.6685111,
3.3502640,
7.5454885, ;
0.85919331,
I.8700287,
3.6864186,
8.0871880, ;
0.97382273,
2.0630795,
4.0056239,
8.6337457, ;
1.0999201,
2.2515727,
4.2941588,
9.1815733, ;
1.2320157,
2.4424873,
4.6539952,
9.7294977, ;
1.3685745,
2.6432482,
5.0930762,
10.276291, ;
1.5110147,
2.8501028,
5.5496664,
10.820731, ;
1.6524316,
3.0662356,
5.9969685,
II.361699, ;
1.7878632,
2.3531739,
0.50462308,
1.1801649,
2.6435856,
0.59227920,
1.3251010,
2.9444393,
0.68311782,
1.4690091,
3.2652455,
0.77802252,
1.6277739,
3.5931006,
0.87780955,
1.8152055,
3.9404244,
0.98447608,
2.0266118,
4.3197220,
1.1027055,
2.2510601,
4.7070586,
1.2342680,
2.4642975,
5.1181342,
1.3703687,
2.6745161,
5.6045527,
1.5093738,
2.9036618,
6.0726433,
1.6601632,
3.1379730,
6.5317274,
1.8114142,
3.3821019,
6.9710610,
1.9570133,
2.7208250,
0.58954093,
1.3165186,
3.0595863,
0.68802300,
1.4695525,
3.4005598,
0.78822009,
1.6218495,
3.7559436,
0.89257803,
1.7933956,
4.1128823,
1.0010449,
1.9732539,
4.4823543,
1.1129456,
2.1922901,
4.8551595,
1.2342820,
2.4398061,
5.3005227,
1.3683838,
2.6740786,
5.8079681,
1.5089837,
2.9132034,
6.3040371,
1.6526051,
3.1670050,
6.8162767,
1.8081292,
3.4326903,
7.3292360,
1.9668254,
3.7031320,
7.8352390,
2.1230982,
3.1540172,
0.67369296,
1.4535461,
3.5420718,
0.78061456,
1.6141161,
3.9270239,
0.89130139,
1.7842550,
4.3172988,
1.0065900,
1.9575659,
4.7185257,
1.1266452,
2.1451903,
5.1078409,
1.2472453,
2.3739016,
5.5229726,
1.3724976,
2.6280195,
5.9838397,
1.5065349,
2.8934498,
6.4848339,
1.6534851,
3.1553322,
7.0212081,
1.8043037,
3.4336189,
7.5857594,
1.9605072,
3.7267904,
8.1559713,
2.1246669,
4.0248785,
8.7191112,
2.2934983,
3.6655050,
0.75890510,
1.5850292,
4.1064169,
0.87473413,
1.7657898,
4.5531826,
0.99561442,
1.9429645,
5.0028032,
1.1229944,
2.1238829,
5.4540699,
1.2577751,
2.3332522,
5.8839583,
1.3902922,
2.5551964,
6.3482527,
1.5230107,
2.8241488,
6.8607907,
1.6625043,
3.1170651,
7.4117459,
1.8159997,
3.4085429,
7.9673605,
1.9729036,
3.7037777,
8.5177973,
2.1318246,
4.0222712,
9.0658477,
2.3018757,
4.3512058,
9.6102216,
2.4817031,
NCAT - National Center for Advanced Technology 10 of 11
National Vehicle and Fuel Emissions Laboratory - Office of Transportation and Air Quality — U.S. EPA
-------
Process for Generating Engine Fuel Consumption Map
(Ricardo Cooled EGR Boost 24-bar Standard Car Engine Tier 2 Fuel) Version: 06-20-2016
2.7038667,
5.0521043,
10.847510,
1.5323489,
2.8979598,
5.3921334,
11.389654,
1.6124334,
3.0945124,
5.7275329,
11.924484,
1.6843697,
3.3024273,
6.0866700,
12.460172,
2.9704440,
5.4296648,
11.376465,
1.7245200,
3.1774328,
5.7889376,
11.909603,
1.8194255,
3.3933736,
6.1489955,
12.445146,
1.9021336,
3.6169159,
6.5419505,
12.986139,
3.2821876,
6.4000667,
11.899107, ;
1.9163480,
3.5031651,
6.8006407,
12.434608, ;
2.0263667,
3.7351022,
7.2131546,
12.970186, ;
2.1198764,
3.9739555,
7.6746368,
13.506976, ];
3.6222477,
7.4087662,
2.1061357,
3.8621343,
7.8848226,
2.2320028,
4.1087333,
8.3387857,
2.3378657,
4.3667003,
8.8367667,
3.9729715,
8.3440248,
2.2868808,
4.2364663,
8.8406952,
2.4312722,
4.5004272,
9.3452833,
2.5581781,
4.7806574,
9.9230835,
4.3259693,
9.2750099,
2.4649987,
4.6154070,
9.8564991,
2.6287782,
4.9000290,
10.437210,
2.7860323,
5.2056010,
10.982428,
4.6845740,
10.138804,
2.6634974,
4.9995685,
10.679012,
2.8441945,
5.3091227,
11.220276,
3.0294834,
5.6406496,
11.761259,
% Fuel Properties
engine.fuel = class_REVS_fuel('RlCARDO_GASOLlNE');
% Idle Speed
engine.idle_speed_radps = 82.623887;
% Pedal Calibration
engi ne . pedal_map_type = enurruengi ne_pedal_map_type .max_engi ne_power;
% Fuel response associated with rapid torque reduction
engine.fast_torque_fuel_adjust_norm = 1.0000000;
Published with MATLAB® R2014a
NCAT - National Center for Advanced Technology 11 of 11
National Vehicle and Fuel Emissions Laboratory - Office of Transportation and Air Quality — U.S. EPA
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