Doosan D34 engine for bobcat 770 skid steer loader

Analysis of Doosan D34 engine core parameters I. Performance indicators Displacement: 3.4L inline four-cylinder diesel engine, cylinder diameter and stroke are 98×113mm; Rated power: 100 horsepower (73.5kW) @2400rpm (general working conditions); 71kW (about 95 horsepower) @1850rpm (tuning parameters when adapted to excavators and other equipment); Torque characteristics: Torque reaches 302lb.ft (about 409N·m) at low speed of 1000rpm, enhancing the start-stop response capability of construction machinery; Maximum torque 317lb.ft (about 430N·m) @1400rpm, optimizing high-load operation efficiency. II. Design and technical configuration ‌Emission control‌: DOC (oxidation catalyst) single-stage after-treatment system, no DPF (particulate filter) required, reducing maintenance complexity; Meet the Tier 4 Final/Stage IIIB emission standards for non-road machinery; ‌Structural features‌: Compact design, 12% shorter than similar models, suitable for space-constrained equipment such as excavators and forklifts; Dual-circulation cooling system, power attenuation rate is less than 5% in high temperature/plateau environments.