WLTP-DHC Test results of Validation test 1b and Cycle modifications the 12th DHC group under GRPE/WLTP informal group 29 March 2012 Joint Research Centre, Ispra Prepared by Japan

WLTP-DHC Table of contents 1.Result of Validation 1b by Japan 2.Result of Validation 1b by India and JRC 3.Summary of Indicated portions 4.Cycle modification for Validation 2 5.Proposed WLTC ver.5 for Validation 2 6.List of issues 7.Characteristics of proposed WLTC ver.5 8.Detail of modifications

WLTP-DHC Overview of Validation test 1b in Japan Vehicle No.ABCDEF Vehicle categoryPC LDCV PC Fuel typePetrol Engine capacity (cc) Max. rated power (kW)43 / / / / / /6000 Curb vehicle mass (kg) Test mass (kg) (1020*) Gross vehicle mass (kg) Power to mass ratio (KW/t) (Curb mass basis) After treatmentTWC Emission standard2005 EURO V Transmission5MT 4AT  Test mass: A~E: Current JPN regulation test mass (Curb mass kg) : F: Proposed gtr test mass (almost same as JP-mass)  Gear shift: fixed gear shift (by Japan) Vehicle F: Current JPN reg. mass: 1020 kg, Proposed gtr test mass: 1046 kg

WLTP-DHC Test result of Passenger car ARROW (↓): Require precise acceleration pedal/clutch operation CIRCLE (○): Hard to follow the trace (require close to W.O.T. operation)

WLTP-DHC Test result of Passenger car ARROW (↓): Require precise acceleration pedal/clutch operation CIRCLE (○): Hard to follow the trace (require close to W.O.T. operation)

WLTP-DHC Test result of Passenger car ARROW (↓): Require precise acceleration pedal/clutch operation CIRCLE (○): Hard to follow the trace (require close to W.O.T. operation)

WLTP-DHC Test result of Light duty commercial vehicle ARROW (↓): Require precise acceleration pedal/clutch operation CIRCLE (○): Hard to follow the trace (require close to W.O.T. operation)

WLTP-DHC Test result of Light duty commercial vehicle ARROW (↓): Require precise acceleration pedal/clutch operation CIRCLE (○): Hard to follow the trace (require close to W.O.T. operation)

WLTP-DHC Test result of Light duty commercial vehicle ARROW (↓): Require precise acceleration pedal/clutch operation CIRCLE (○): Hard to follow the trace (require close to W.O.T. operation)

WLTP-DHC Result of Validation 1b by India and JRC  India  Dynamic concerns (difficult to follow the cycle)  48-67, , , , , , , , , , , , ,  PMR concerns (Vehicles of 35 to 65 kW/t have difficulty)  , , ,  Difficult to follow the lower speeds of 10km/h  JRC  Observed difficulty to drive the low speed parts (~10 km/h) with the 1st gear  With typical European vehicles, there seems to be few problem to follow the trace (accelerations and top speed portions of WLTC ver.4).

WLTP-DHC Summary of validation 1b From the viewpoints of drivability, traceability and reproducibility, the following 31 portions are pointed out by India, JRC and Japan : number of decimal places

WLTP-DHC Summary of validation 1b No.TimeCommentsby Need to be smoothnessJapan 248 – 67Difficult to drive the low speed partsJRC/India/Japan 3140 – 160Difficult to drive the low speed partsJRC/India/Japan Difficult to drive the low speed partsJRC/India/Japan Need to be smoothnessIndia/Japan Need to be smoothnessIndia/Japan 7545 – 560Need to be smoothnessJapan Require close to W.O.T. operationJapan Difficult to drive the low speed partsJRC/India/Japan 10709Difficult to drive the low speed partsJRC/India/Japan – 718Difficult to drive the low speed partsJRC/India/Japan – 730Require close to W.O.T. operationJapan Difficult to drive the low speed partsJRC/India/Japan – 785Require close to W.O.T. operationJapan Difficult to drive (PMR concern)India – 810Require close to W.O.T. operationJapan

WLTP-DHC Summary of validation 1b No.TimeCommentsby – 830Need to be smoothnessIndia/Japan – 870Require close to W.O.T. operationJapan – 925Require close to W.O.T. operationJapan – 980Require close to W.O.T. operationJapan – 1065Difficult to drive the low speed partsJRC/India/Japan – 1125 Difficult to follow the target speed Require close to W.O.T. operation India/Japan Difficult to drive the low speed partsJRC/India/Japan Difficult to follow the target speed Require close to W.O.T. operation India/Japan – 1325Require close to W.O.T. operationJapan Require close to W.O.T. operationIndia/Japan Difficult to follow the target speedIndia Require close to W.O.T. operationIndia/Japan Require close to W.O.T. operationIndia/Japan Difficult to drive (PMR concern)India 31Allto be one decimal point ( to XX.X km/h)Japan

WLTP-DHC Proposed cycle modification for Validation 2  As a first step to move forward to validation 2, Japan propose to modify the following items (15 portions).  the minimum speed set to 12km/h  Smoothing to improve repeatability  Set vehicle speed one decimal point  Other 16 remaining portions regarding dynamic concerns which was indicated by India and Japan should be considered during Validation 2.

WLTP-DHC Proposed WLTC ver.5 for Validation 2 12 km/h Smoothing Concern : Time chart was changed from two decimal point to one decimal point

WLTP-DHC Proposed WLTC ver.5 for Validation 2 12 km/h Concern Concern 27 31: Time chart was changed from two decimal point to one decimal point

WLTP-DHC List of issues No.TimeCommentsbyAction Need to be smoothnessJapanSmoothing 248 – 67Difficult to drive the low speed partsJRC/India/JapanMinimum speed to 12 km/h 3140 – 160Difficult to drive the low speed partsJRC/India/JapanMinimum speed to 12 km/h Difficult to drive the low speed partsJRC/India/JapanMinimum speed to 12 km/h Need to be smoothnessIndia/JapanSmoothing Need to be smoothnessIndia/JapanSmoothing 7545 – 560Need to be smoothnessJapanSmoothing Require close to W.O.T. operationJapanEvaluated during validation Difficult to drive the low speed partsJRC/India/Japan Minimum speed to 12 km/h & Smoothing 10709Difficult to drive the low speed partsJRC/India/JapanMinimum speed to 12 km/h – 718Difficult to drive the low speed partsJRC/India/JapanMinimum speed to 12 km/h – 730Require close to W.O.T. operationJapanEvaluated during validation Difficult to drive the low speed partsJRC/India/JapanMinimum speed to 12 km/h – 785Require close to W.O.T. operationJapanEvaluated during validation Difficult to drive (PMR concern)IndiaEvaluated during validation – 810Require close to W.O.T. operationJapanEvaluated during validation2

WLTP-DHC List of issues No.TimeCommentsbyAction – 830Need to be smoothnessIndia/JapanSmoothing – 870Require close to W.O.T. operationJapanEvaluated during validation – 925Require close to W.O.T. operationJapanEvaluated during validation – 980Require close to W.O.T. operationJapanEvaluated during validation – 1065Difficult to drive the low speed partsJRC/India/JapanMinimum speed to 12 km/h – 1125 Difficult to follow the target speed Require close to W.O.T. operation India/JapanEvaluated during validation Difficult to drive the low speed partsJRC/India/JapanMinimum speed to 12 km/h Difficult to follow the target speed Require close to W.O.T. operation India/JapanEvaluated during validation – 1325Require close to W.O.T. operationJapanEvaluated during validation Difficult to follow the target speed Require close to W.O.T. operation India/JapanEvaluated during validation Difficult to follow the target speedIndiaEvaluated during validation Difficult to follow the target speedIndia/JapanEvaluated during validation Difficult to follow the target speedIndia/JapanEvaluated during validation Difficult to drive (PMR concern)IndiaEvaluated during validation2 31Allto be one decimal point ( to XX.X km/h)Japanone decimal point

WLTP-DHC Characteristics of proposed WLTC ver.5 Chi squared value of proposed WLTC v5 is identical to that of WLTC v4

WLTP-DHC Speed frequency distributions Proposed

WLTP-DHC v * a_pos frequency  LOW  MIDDLE  HIGH  Extra-HIGH 95%tile of WWW database is 10 m 2 /s 3 Max. of WLTC v5 is 11.2 m 2 /s 3 95%tile of WWW database is 14 m 2 /s 3 Max. of WLTC v5 is 16.7 m2/s3 95%tile of WWW database is 16 m 2 /s 3 Max. of WLTC v5 is 19.7 m 2 /s 3 95%tile of WWW database is 18 m 2 /s 3 Max. of WLTC v5 is 20.9 m 2 /s 3 The maximum v*a of WLTC ver.5 exceed 95%tile of WWW database

WLTP-DHC Detail of modification Not modified, but need further evaluation

WLTP-DHC Detail of modification Not modified, but need further evaluation

WLTP-DHC Detail of modification Not modified, but need further evaluation

WLTP-DHC Detail of modification Not modified, but need further evaluation

WLTP-DHC Detail of modification Not modified, but need further evaluation

WLTP-DHC Detail of modification Not modified, but need further evaluation

WLTP-DHC Source: JSAE 2008