LEHT7905 Caterpillar C12 Diesel Engine Brochure
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Diesel Truck Engine C-12 410 hp 1550 lb-ft @ 1200 rpm Peak Torque PERFORMANCE CURVES Torque lb-ft 1650 1450 1250 1050 850 650 Power bhp 450 Shown with Optional Equipment 400 350 300 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 Engine Speed rpm PERFORMANCE DATA Operating Range (rpm) . . . . . . . . . . . . . 1200-2100 Maximum Engine rpm . . . . . . . . . . . . . . . . . . . 2100 Advertised hp (kW) . . . . . . . . . . . . . . . . . . 410 (306) Governed Speed — rpm . . . . . . . . . . . . . . . . . 2100 Max hp @ 1600 rpm (kW) . . . . . . . . . . . . 425 (317) Peak Torque — lb-ft (N•m) . . . . . . . . . 1550 (2102) Peak Torque — rpm . . . . . . . . . . . . . . . . . . . . . 1200 Torque rise (%) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Altitude Capability — ft (m) . . . . . . . . 7500 (2288) Engine Brake Performance – hp Bore—in (mm) . . . . . . . . . . . . . . . . . . . . . . 5.1 (130) Stroke—in (mm). . . . . . . . . . . . . . . . . . . . . 5.9 (150) Displacement—cu in (L). . . . . . . . . . . . . 732 (12.0) Aspiration . . . . . . . . . . Turbocharged for ATAAC1 Rotation (from flywheel end) . . Counterclockwise Cooling System 2 — gal (L) . . . . . . . . . . . . 2.7 (10.2) Lube Oil System (refill)— gal (L) . . . . . . . . 9.4 (36) Weight, Net Dry (approx)—lb (kg) with standard equipment . . . . . . . . . 2070 (940) P Air-to-Air AfterCooling Engine only. Capacity will vary with radiator size and use of cab heater. 3 @ 65 mph “balanced” 2 E i Li it 500 400 300 200 100 1100 1300 1500 1700 1900 2100 2300 Engine Speed rpm Data provided by Jacobs ® Vehicle Systems for Model 312A. SIMULATED VEHICLE PERFORMANCE 8.0 7.5 3.73:1 3.91:1 3.73:1 7.0 3.91:1 6.5 55 Simulated Truck Spec C-12 410 hp 1 bl T ENGINE RETARDATION MPG (TOA) Simulated Trip Fuel Economy CATERPILLARâ ENGINE SPECIFICATIONS Cruise Speed mph Transmission: 10 Speed (0.74 O.D.) Rear Axle Ratios: 3.91:1 — Performance 3.73:1 — Balanced 65 Semi-Van 8.0' x 13.5' Full Aero Package 275/80R 22.5 LP GVW: 78 000 lbs C-12 STANDARD EQUIPMENT ELECTRONIC FEATURES Crankcase breather Electronic control module Electronic data link, ATA/SAE Electronically controlled unit injector fuel system Fuel – spin-on filter, priming and transfer pumps Gear driven jacket water pump Governor – full-range electronically controlled Hydraulic steering pump drive, SAE A Lifting eyes Lubricating – cooler, right hand filler, full flow filter, gear-driven pump, front or rear sump pan Turbocharger ACCESSORY EQUIPMENT Air compressor, gear driven, 13, 13.2, 16.5, or 31 cfm Alternator, 12 Volt, 105 Ampere Dry charge coolant conditioner Fan drive mounting bracket Flywheel and SAE No. 1 housing Front engine supports Jacobs engine brake Model 312A Lubricating oil filter, bypass spin-on or centrifugal type Rear power takeoff (1.31:1) SAE J1939 data link Starting, 12 Volt electric motor, ether starting aid DIMENSIONS 49.75 in. 1263.7 mm 35.68 in. 906.4 mm 50.6 in. 1285.3 mm DIESEL TRUCK ENGINE – 410 hp 41.85 in. 1063 mm 15.8 in. 402.3 mm RATING DEFINITIONS AND CONDITIONS Performance is based on SAE J1349 standard conditions of 29.61 in. Hg (100 kPa) and 77° F (25° C). Fuel consumption is based on fuel oil having an LHV of 18 390 Btu/lb (42 780 kJ/kg) and weighing 7.001 lb/U.S. gal (839 g/L). ■ Electronic self-diagnostics ■ Electronically tabulated total fuel consumption, hours and miles ■ Electronically tabulated total idle time ■ Battery backup ■ Real time clock ■ Quick stop recorder ■ Fleet information software (FIS) capability ■ User-selectable, reprogrammable vehicle operating parameters – vehicle mph speed limiting, engine rpm speed limiting, cruise control, intermediate gears and low gear limits, geardown protection, PTO vehicle mph speed limit, PTO engine rpm speed limit, programmable idle rpm speed, idle shutdown timer, PTO ramp rate, top engine rpm limit, ambient temperature idle control GEARING CONSIDERATIONS Caterpillar ® C-12 Air-to-Air Aftercooled (ATAAC) Truck Engines offer a wide operating range and high torque rise which promotes the use of transmissions with fewer gears. Even with this built-in feature, heavy/specialty haulers must remember their trucks should be geared to achieve the appropriate compromise between startability and desired road speed. Typical loads of 80 000 Ib or less are less affected by improper drive train specing than are heavy haulers. In general, either application shares one similar recommendation – gear fast/run slow is essential for good fuel consumption. If any of the following conditions are present, special attention should be given to proper transmission and axle specifications. A complete Caterpillar Truck Engine Pro analysis is available from your local Caterpillar or truck dealer. 1. Poor road surface 2. Adverse grades – 8% plus 3. GVW in excess of 80 000 Ib For the best balance of performance and fuel economy on the C-12, spec axle ratios and tire sizes to obtain: 1475 rpm @ 60 mph The curves shown are for a standard engine without fan, but equipped with air compressor and fuel, lubricating oil and jacket water pumps. Subject to the following: Additional ratings may be available for specific customer requirements. Consult your Caterpillar representative for details. Minimum recommended engine speed at 55 mph cruise speed – 1400 rpm Maximum recommended engine speed at cruise – 1700 rpm Materials and specifications are subject to change without notice. LEHT7905 Supersedes LEHT6110 Printed in U.S.A. The International System of Units (SI) is used in this publication. © 1997 Caterpillar Inc. All rights reserved.
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File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.2 Linearized : Yes Create Date : 1997:12:30 12:06:00 Producer : Acrobat Distiller 3.0 for Power Macintosh Title : LEHT7905 Subject : Specifications Sheet Author : Caterpillar Inc. Keywords : C-12, Diesel, Truck, 410hp, 1550lb, 1997 Modify Date : 1998:05:01 08:43:16 Page Count : 2 Page Mode : UseOutlinesEXIF Metadata provided by EXIF.tools