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Caterpillar New Tier 4 Interim/Stage IIIB Industrial Engines

03.11.2009
Caterpillar Inc. announces the introduction of the new Cat C3.4B, C4.4 ACERT and C6.6 ACERT, the three latest additions to the Cat Tier 4 Interim/Stage IIIB technology industrial engine line up. The new engines cover the horsepower band from 60-174 hp (45 -130 bkW) and provide more engine options for manufacturers of agricultural, construction, material handling and general industrial equipment.

The new C3.4B offers industry a power density and compactness suitable for many application requirements. The compact engine provides power with ratings from 60 - 115 bhp (45-86 bKw) and high torque up to 310 lb-ft (420 Nm). It features a dependable common rail fuel injection system and is electronically controlled to deliver world-class performance and fuel economy.

Complementing the midrange of these engines is the new C4.4 ACERT providing 80-174 bhp (60-130 bKw). The 4.4 liter, 4-cylinder engine has received a significant upgrade and now provides a 22% increase in power to 174 hp (130 bKw). The newly designed head, block and common rail fuel system delivers excellent fuel economy and class leading torque up to 553 lb-ft (750 Nm).

The new C6.6 ACERT is a 6.6 liter platform delivering 120-174 bhp (89-130 bKw) and a peak torque of up to 609 lb-ft (825 Nm) at low engine speed. The high torque capability and low end response make this an ideal choice for many machines that currently utilize engines over 175 bhp (130 bkW).

The addition of the C3.4B, C4.4 ACERT and C6.6 ACERT brings the total Cat Industrial Tier 4 Interim/Stage IIIB engine count to fifteen. Compared to existing Tier 3/Stage IIIA engines, these new engines produce fuel consumption improvements across the entire horsepower band. Fuel economy improvements can be subject to application, ratings and operating conditions. The C3.4B, C4.4 ACERT and C6.6 ACERT will begin production and distribution prior to 2012, the year that Tier 4 Interim/Stage IIIB emissions standards take effect for this power category of engines. When completely unveiled, the Cat Tier 4 Interim/Stage IIIB industrial engine lineup will include over twenty models from 11-1200 hp (9-895 kW).

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