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Payload Factor - Japan Detail Information

This article provides insights into the data collection process used in Japan to derive the payload factor for commercial vehicles. It includes information on the types of data used, steps taken, and the definition of payload factor used in Japan.

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Payload Factor - Japan Detail Information

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  1. WLTP-DTP-LabProcICE-162 Payload Factor - JapanDetail Information

  2. Data collection Q : What kind of data was used as input? (statistical survey under commercial vehicle users, a 'rule of thumb', default values or other) Which steps were taken to derive the payload factor from the data that Japan used as input? • A : • Data : Obtained based on questionnaire survey. • Step : • Gather information from customer. ( distributed via local office(District Transport Bureau of MLIT) in all of Japanese prefectures (47)) • Total driving distance • Driving distance with loading • Weight of loading • Collect 7days data for every month • Total # of gathered data (annual) : 180,000 • Estimate overall value based on whole number of vehicles in Japan • Survey shows • Total driving distance • Total driving distance with loading • Total carried tonnage • Actual ton*km • Potential ton*km Actual ton*km Potential ton*km Payload ratio can be obtained as

  3. Applicable vehicles Automobile Category Moderate Small Kei Example Wheels >=4 >=4 >=3 Bigger than 4 wheels small vehicle L<=4.7 W<=1.7 H<=2.0 L<=3.4 W<=1.48 H<=2.0 Size (meter) L x W x H Vehicle construction Eng. Disp. (Liter) 0.66< <=2.0 * 0.66< <=0.66 • Q : • What kind of vehicles are included? (only commercial or also privately owned, wider/narrower/same as N1 category in EU). We were told that probably Japan has a different definition for 'commercial vehicles'. • A : • Not exactly same as EU N1 category, but similar vehicles ( Red box category in below table). • Both of commercial and private * Petrol only, no limit for diesel. Not exactly same as EU N1 category, but similar vehicles.

  4. Definition of ‘Payload Factor’ JPN EU • Q : • Which definition was used to calculate the payload factor? Since our proposal uses a different reference mass, and the payload factor is related to (LM-RM), this definition should be applied to work out a payload factor for Japan. If the 'normal' payload factor is used, this is not comparable to the payload in our proposal. • A : • Definition of ‘payload factor’ is not same, but it is still comparable. • No passenger weight. • 10.9% is obtained from GVW basis, not MPW. • Impossible to convert to MPW basis due to lack of data, but 2.7% - 10.8% (median is 7.3%, n=139). • 10.9% of MPW can cover passenger weight. MPW Margin for modification Remaining loading capacity GVW Remaining loading capacity 100% LM-RM Average Payload, Passengers 35% Average Payload 10.9% of MPW 7.3% of MPW 10.9% of GVW Driver Luggage 100 kg Comparable with passengers weight Option equip. Body work mass Vehicle test mass RM Unladenmass Definition of ‘payload factor’ is not same, but it is still comparable.

  5. Comparableness of passengers weight Consideration why [10.9% of MPW] can cover [10.9% of GVW] + [passengers weight]. Major vehicle of this data is [Small size] and [Private use]. (see slide 7, actual ton*km) Representative GVW is around 400-450kg. 10.9% of GVW = approx. 45kg = 7.3% of MPW. Thus, MPW = approx. 616kg 10.9% of MPW = approx. 67kg Thus (10.9% of MPW) - (10.9% of GVW) = 67-45 = 22kg Where, average passengers are around 0.2 persons*. Where, weightof one person is assumed as 75kg, additional passengers weight is 0.2 x 75 = 15kg Delta weight between MPW basis and GVW, 22kg significantly covers passengers weight, 15kg. JPN EU MPW Margin for modification Remaining loading capacity GVW Remaining loading capacity 100% LM-RM Average Payload, Passengers 35% Average Payload 10.9% of MPW 7.3% of MPW 10.9% of GVW Driver Luggage 100 kg Comparable with passengers weight Option equip. Body work mass Vehicle test mass RM Unladenmass * [Actual persons] includes driver. Definition of ‘payload factor’ is not same, but it is still comparable.

  6. Applicable number of vehicle 2010/Mar Purpose Total Commercial Private # vehicles (x103) # vehicles (x103) Ratio (%) Ratio (%) Ratio (%) R-last year (%) R-last year (%) R-last year (%) # vehicles (x103) Ratio (%) R-last year (%) # vehicles (x103) Ratio (%) R-last year (%) Vehicle design Total Moderate Small 4wheels 3wheels Special Kei Trucks Applicable number of vehicle for the survey

  7. Detail data of ‘Payload Factor’ In (similar) N1 category, private usage is predominant in Japan.

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