What TATA Motors should learn from Bharat Benz
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WHAT TATA MOTORS SHOULD LEARN FROM BHARAT BENZ By: Raman Dhiman Email: [email protected] Source of Information for Specifications: Internet Formulas used for calculations are based on what is available on Internet. Only for Academic use. Not for any commercial use.
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A brief analysis of Specs of TATA Prima 2528.K & Bharat Benz 2528
Transcript of What TATA Motors should learn from Bharat Benz
WHAT TATA MOTORS SHOULD LEARN FROM BHARAT BENZ By: Raman Dhiman Email: [email protected]
Source of Information for Specifications: Internet Formulas used for calculations are based on what is available on Internet. Only for Academic use. Not for any commercial use.
• TATA Prima is OVERDESIGNED
X Overdesigned X Higher Price X Higher Kerb Weight X Low Fuel Economy
Optimized Design Strategically Priced
(Effects to be seen in coming years)
Lower Kerb Weight Better Fuel Economy
Comparison of Tractive Effort at the Wheels 6x4 Tipper (280 HP)
Tractive Effort Comparison
BB2528RAR 4.778
Single Reduction
TATA Prima 2528.K
RAR 7.246Hub Reduction
TATA Prima Lx 2528.K
RAR 5.58Single Reduction
Gear Tractive Effort at the Wheels
Tractive Effort at the Wheels
Tractive Effort at the Wheels
Crawler 76577 89474 696491st Gear 49825 62063 494662nd Gear 34899 44140 364003rd Gear 25333 32613 265384th Gear 19289 24460 193285th Gear 13613 17853 138516th Gear 9513 12722 101927th Gear 6885 9418 74318th Gear 5256 7029 5413Reverse 72845 84625 72523
Tractive Effort at the Wheels - Gear Ratio x RAR x Torque (Nm)
• TATA Prima – Much Higher Tractive Effort at the Wheel due to Higher Rear Axle Ratio, Higher Gear Ratios. Though torque output is lower in TATA Prima than Bharat Benz (BB)
• For the mine depth of approx. 45m to 55 m, with the maximum gradient of 15 to 16 degrees, Bharat Benz can easily climb in 1st Gear while TATA Prima provides much higher Tractive effort than required in the subject gear. (Prima Lx is better )
Gradeability Comparison 6x4 Tipper (280 HP) – 1st & Crawler Gear Gradeability Comparison BB 2528 TATA
Prima 2528.KTATA
Prima Lx 2528.K
Paramater 1st Gear 1st Gear 1st GearEng Torque 1100 970 970Gear Ratio 9.48 8.83 9.139Rear axle ratio 4.78 7.246 5.58Drive line eff 0.95 0.95 0.95
47,354 58,960 46,992 89,010 98,595 88,332
Legal GVW 25000 25000 25000Grade ability 36% 39% 35%
Gradeability Comparison BB 2528 TATA
Prima 2528.KTATA
Prima Lx 2528.K
Paramater Crawler Gear Crawler Gear 1st Gear
Eng Torque 1100 970 970Gear Ratio 14.57 12.73 12.868Rear axle ratio 4.78 7.246 5.58Drive line eff 0.95 0.95 0.95
72,779 85,001 66,167 1,36,802 1,42,141 1,24,374
Legal GVW 25000 25000 25000Grade ability 55% 57% 50%
• TATA Prima – Higher Gradability than required in all respective gears • TATA Prima Lx has lower Gradability.
Comparison of Tractive Effort at the Wheels 6x4 Tipper (230 HP)
• In 280 HP, lessons learnt and Prima Lx is an answer for BB, but for 230 HP, TATA Prima Lx, and TATA LPX 2523 are again overdesigned in terms of Powertrain combination.
Tractive Effort Comparison
BB2523RAR 4.778
Single Reduction
TATA Prima Lx 2523.K
RAR 5.58Single Reduction
TATA LPK 2523RAR 5.86
Single Reduction
Gear Tractive Effort at the Wheels
Tractive Effort at the Wheels
Tractive Effort at the Wheels
Crawler 56389 64623 629641st Gear 36689 45896 447182nd Gear 25698 33773 329063rd Gear 18654 24623 239914th Gear 14204 17934 174735th Gear 10024 12851 125216th Gear 7005 9456 92147th Gear 5070 6895 67188th Gear 3870 5022 4893Reverse 53641 67290 65563
Tractive Effort at the Wheels - Gear Ratio x RAR x Torque (Nm)
Gradeability Comparison 6x4 Tipper (230 HP) – 1st & Crawler Gear
• TATA Prima Lx, & TATA LPK 2523 have higher Gradeability than required to negotiate the gradient in the subject applications.
Gradeability Comparison BB 2523 TATA Prima Lx
2523.K TATA LPK 2523
Paramater 1st Gear 1st Gear 1st GearEng Torque 810 900 835Gear Ratio 9.48 9.139 9.139Rear axle ratio 4.78 5.58 5.58Drive line eff 0.95 0.95 0.95
34,869 43,601 40,452 65,544 72,912 76,038
Legal GVW 25000 25000 25000Grade ability 26% 29% 30%
Gradeability Comparison BB 2523 TATA Prima Lx
2523.K TATA LPK 2523
Paramater Crawler Gear Crawler Gear 1st GearEng Torque 810 900 835Gear Ratio 14.57 12.868 12.868Rear axle ratio 4.78 5.58 5.58Drive line eff 0.95 0.95 0.95
53,592 61,392 56,958 1,00,736 1,02,662 1,07,064
Legal GVW 25000 25000 25000Grade ability 40% 41% 43%
• TATA Prima is Overdesigned
• Higher Tractive Effort at the Wheel in the respective Gear for Prima
than required to negotiate the gradient.
• For 6x4 Tipper 280 HP – to achieve a gradient of 15 to 16 degrees,
with a load of 20 to 25 Tons BB provides the Optimum Tractive Effort
(in practical use)
• TATA Prima has Higher Kerb weight
• Due to over specifications in terms of Powertrain, Chassis & Tyres.
• Due to Optimized design & Lower Kerb weight
• Fuel Efficiency of Bharat Benz is better than TATA Prima & Prima Lx.
Summary …
Thank You…
