JCB, Savannah, Ga., has introduced the high-torque, low-emission Ecomax diesel engines on its Loadall telehandler range. Developed to meet the Tier 4 Interim emissions standards, the JCB Ecomax engine has no requirement for costly diesel particulate filters (DPFs) or exhaust after-treatment fluids, resulting in low-cost, efficient operation for customers.
JCB’s Ecomax diesel engines incorporate an advanced combustion system (patent pending) that manages emissions within the engine, rather than having to rely on expensive after treatment or
a DPF. Through the use of cooled exhaust gas recirculation (EGR), a high pressure common rail injection system using up to 29,008 psi injection pressures and a variable geometry turbocharger, JCB Power Systems has been able to meet the emissions standards while developing additional power and torque, while using less fuel.
Three engine ratings are available to construction Loadall customers. A 74-hp (55kW) engine is standard on the 506-36, 507-42, 531-70, 541-70, and the 535-140. A 108-hp (81kW) engine is standard specification for the 509-42, 510-56, 512-56, 531-70T, 541-70T, 550-140 and the 550-170, while a range-topping 125-hp (93kW) engine is included as standard on the 550-80 model. Customers can also opt for the 108-hp (81kW) engine in the majority of the Loadall models as an option, while the 125-hp (93kW) motor is available as an option in four of the larger models.
The 74-hp (55kW) engine is expected to prove particularly popular with the rental market. Though delivering slightly less outright power than the engine it replaces, the Ecomax engine produces 6 percent more torque and 5 percent more power at low revs than the previous Tier 3 engine. This means that operators get the same performance, though owners will see improved fuel consumption and increased efficiency. The 108-hp (81kW) engine is expected to appeal more to owner operators and contractors, for whom the 15 percent increase in torque and 10 percent boost to low rev power will prove a valuable gain in high-production duties. A variable speed cooling fan is standard on the two more powerful engines, reducing fuel consumption, while allowing faster warm-up for more efficient engine
running in colder weather.
A revised engine cover and pod now direct cooling air from the top of the front canopy, around the engine and through the cooling pack, to exit through new vents at the top of the rear of the canopy. This prevents cooling air disturbing dust and debris on the ground below the engine, prolonging air filter life and reducing dust on site for the operator. However, despite the aggressive new look, complete with updated JCB color scheme, the designers have not had to sacrifice JCB’s legendary visibility across the engine. As there is no bulky DPF or exhaust after treatment to accommodate beneath the engine canopy there has also been no requirement to extend the wheelbase or chassis length of the Loadall, as with some competitors, so the machines maintain their respected maneuverability and tight turning circles.
In addition to the JCB Ecomax engine, JCB has focused on the complete Loadall design on many of its models, which are engineered specifically to work in construction and agriculture. Specifically on the construction (low boom) and Agri ranges, customers also realize the additional benefits of:
In addition, high back-off brakes, which pull the brake pads away from the disc to prevent drag, will be incorporated on the 531-70, 541-70, 535-95 and the 533-105.
Already standard on the 550-80, high back-off brakes contribute a 2 percent efficiency gain to the driveline. This is further improved by reduced transmission oil levels, cutting churning losses and drag within the transmission. The PS750 Powershift gearbox now uses .25 gallons less of oil, while the PS764 saves .4 gallons of oil. This reduction in drag contributes a further 1 percent efficiency gain.
The Loadall cabs feature a completely new instrument cluster and dash layout, with a high resolution LCD monitor. The front dash installation has been restyled for a clearer layout and the cab heating and ventilation system now features a seven-speed fan, providing greater control for the operator. The operator’s seat now comes complete with an operator presence switch as standard, preventing the machine drive from being engaged without an operator at the controls, greatly improving site safety. The top half of the cab door now comes with a revised slam latch mechanism and door ajar facility to ensure that the window stays open if required.
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