John Deere Power Systems announced that three new models of its 4.5L engine have received Tier 3/Stage III A certification from the Environmental Protection Agency (EPA) and the European Union (EU). The turbocharged PowerTech E 4.5L, M 4.5L, and air-to-air aftercooled PowerTech M 4.5L engines, are the latest models from the complete lineup of the company's Tier 3/Stage III A engines to be certified.
The E 4.5L engine features a power range of 63 kW to 74 kW (85 to 99 hp) and is the first John Deere engine under 100 hp to be electronically controlled. This engine comes with a two-valve cylinder head and incorporates a high-pressure common-rail fuel system, full- authority electronic controls, a multiple injection strategy and a fixed geometry turbocharger, as well as all the performance of Tier 2/Stage II engines and more. The E 4.5L engine's full-authority electronic controls also enable it to offer improved cold-start performance, precise engine-speed control, torque-curve shaping and more. Electronic controls increase productivity, improve fuel economy, lower total installed costs and reduce ownership costs.
In addition to the turbocharged PowerTech E 4.5L, John Deere also offers a turbocharged and air-to-air aftercooled PowerTech E 4.5L engine that received Tier 3/Stage III A certification from the EPA and EU in the summer of 2006. These engines offer a power range of 86 kW – 104 kW (115 hp – 140 hp).