Đang tải... (xem toàn văn)
GỒM CÁC PHẦN: Cab & Operator Environment.ppt Electronic Control Systems.ppt Electronics Control System – Monitors Recap.ppt Hydraulics.ppt Improved_CSS.ppt Introduction.ppt Mechanicals Power Trainand Structures.PPT Technical Presentation Ki
NEXTNEXTFIRSTFIRSTLASTLASTEXITEXITMENUMENUTechnical Presentation KitTechnical Presentation KitHydraulic ExcavatorsHydraulic ExcavatorsMechanicals: Power TrainMechanicals: Power Trainand Structuresand StructuresSection 3Section 3 PREVPREVNEXTNEXTFIRSTFIRSTLASTLASTEXITEXITMENUMENUHIGH OUTPUT ENGINEIf you want to carry out more work and you have the choice between two machines of more or less the same performance, remember that power makes the difference. The engine on the PC1250 is the highest in its class: it is 29 kW (39 HP) larger than on the current machine and 7 kW (9 HP) larger than Hitachi EX1200.Model HitachiItem PC1250-7 PC1100-6 EX1200-5Engine model — Komatsu SAA6D170E-3 Komatsu SAA6D170E-2 MHI S6R-Y1TAA1Engine output kW/rpm {HP/rpm} 485/1800 {650/1800} 456/1800 {611/1800} 478/1650 {641/1650}Piston displacement ltr (cu.in) 23.2 (1416) 23.2 (1416) 24.5 (1495)Aftercooler — Air-cooled Air-cooled Air-cooled980 × 904 × 65 980 × 708 × 65(38.6 × 35.6 × 2.6) (38.6 × 27.9 × 2.6)Aftercooler core size mm (in)Komatsu POWER TRAIN PREVPREVNEXTNEXTFIRSTFIRSTLASTLASTEXITEXITMENUMENUHIGH OUTPUT ENGINEPOWER TRAINHPI SystemHPI SystemIntake HeatersIntake HeatersDual Pre-CleanersDual Pre-Cleaners PREVPREVNEXTNEXTFIRSTFIRSTLASTLASTEXITEXITMENUMENUHIGH OUTPUT ENGINEIf you want to carry out more work and you have the choice between two machines of more or less the same performance, remember that power makes the difference. The engine on the PC1250 is the highest in its class: it is 29 kW (39 HP) larger than on the current machine and 7 kW (9 HP) larger than Hitachi EX1200.Model HitachiItem PC1250-7 PC1100-6 EX1200-5Engine model — Komatsu SAA6D170E-3 Komatsu SAA6D170E-2 MHI S6R-Y1TAA1Engine output kW/rpm {HP/rpm} 485/1800 {650/1800} 456/1800 {611/1800} 478/1650 {641/1650}Piston displacement ltr (cu.in) 23.2 (1416) 23.2 (1416) 24.5 (1495)Aftercooler — Air-cooled Air-cooled Air-cooled980 × 904 × 65 980 × 708 × 65(38.6 × 35.6 × 2.6) (38.6 × 27.9 × 2.6)Aftercooler core size mm (in)Komatsu POWER TRAIN PREVPREVNEXTNEXTFIRSTFIRSTLASTLASTEXITEXITMENUMENUPOWER TRAINAir-cooled after coolerAn air-cooled after cooler with excellent cooling efficiency is used.By reducing the temperature of the air supply, it has become possible to realize high output while reducing NOx.COOLING SYSTEMCharge-Air-cooledKOMATSU SAA6D170E-3CAC now wider than PC1100-6 PREVPREVNEXTNEXTFIRSTFIRSTLASTLASTEXITEXITMENUMENU2-WORKING MODES (A·E)Active mode (A mode) supplies maximum engine power resulting in high levels of production.Economy mode (E mode) improves fuel consumption.POWER TRAIN PREVPREVNEXTNEXTFIRSTFIRSTLASTLASTEXITEXITMENUMENUSTRUCTURESLARGE BUCKET CAPACITY(LARGEST IN ITS CLASS)Increasing the weight of the machine and moving the center of gravity to the rear has made it possible to increase the bucket capacity by 4%, which gives this machine the largest bucket capacity in its class.Machine weight increasedThe weight of the machine has been increased approx. 4 tons (4.8 U.S. tons). PREVPREVNEXTNEXTFIRSTFIRSTLASTLASTEXITEXITMENUMENUImprovement in machine stabilityThe weight of the counterweight has been increased from 17.4 tons (19.2 U.S. tons) to 18.0 tons (19.8 U.S. tons).Approx 3 tons added to frames – revolving and track frame.Heavier castings designed for work equipment.STRUCTURES PREVPREVNEXTNEXTFIRSTFIRSTLASTLASTEXITEXITMENUMENUThe engine meets Tier 2 emission regulations in USA, Europe and Japan.Tier 2 emission regulationsThe quantity of NOx and PM (Particulate) must be the following values or below.PC1250-7’s discharge amount of NOx and PM are reduced by 35% and 63%compared with that of PC1100-6 respectively.POWER TRAIN PREVPREVNEXTNEXTFIRSTFIRSTLASTLASTEXITEXITMENUMENUThe noise level around the machine becomes highest at 15 m on the right side of the machine. The noise level of PC1250 at this point is 3 dB(A) lower than that of PC1100. (The sound energy is reduced by 50%.)Low-noise design to lower working noise for environment If the low-noise sound absorbing duct for Europe is installed, the noise level is lowered below 80 dB(A).82.779.485.784.576.077.078.079.080.081.082.083.084.085.086.087.01PC1250PC1250(EU)PC110 0PC800STRUCTURES [...]... PC1000 was model-changed into PC1100 Keeping this strength, the boom of PC1250 is farther improved PREV NEXT FIRST LAST MENU EXIT STRUCTURES Strengthening of arm The basic strength of the arm was increased when PC1000 was model-changed into PC1100 Keeping this strength, the arm of PC1250 is farther improved PREV NEXT FIRST LAST MENU EXIT STRUCTURES Strengthened bucket with wear-resistant plates... travel unit PREV NEXT FIRST LAST MENU EXIT PC1250 - 7 Hydraulic Excavators Technical Presentation Kit PRESENTATION MENU END Introduction Cab Structure & Monitor Mechanicals Hydraulic System Mechanicals: Power Train and Structures Electronic Control System SECTION Testing & Adjusting Troubleshooting Created by: Komatsu America International Company Service Training Department PREV EXIT . Hitachi EX1200.Model HitachiItem PC125 0-7 PC110 0-6 EX120 0-5 Engine model — Komatsu SAA6D170E-3 Komatsu SAA6D170E-2 MHI S6R-Y1TAA1Engine output kW/rpm {HP/rpm}. Hitachi EX1200.Model HitachiItem PC125 0-7 PC110 0-6 EX120 0-5 Engine model — Komatsu SAA6D170E-3 Komatsu SAA6D170E-2 MHI S6R-Y1TAA1Engine output kW/rpm {HP/rpm}