Written by administrator Monday, 05 September 2011 16:57
Hagie has integrated their Automatically Controlled Engine (ACE) technology to the new engine to improve the machine performance. ACE technology combines the engine throttle control to the hydrostatic pump displacement. The engine has two throttle settings, idle and high. The high setting will raise the engine speed to a point in the engines RPM curve near the peak torque point. As the hydrostatic handle is pushed forward or pulled backwards, the engine's RPM is increased automatically. All Hagie STS sprayers are equipped with Cummins Tier 3 engines and the new ACE technology. The Tier 3 engines have reduced exhaust emissions per the EPA regulations as well as a reduction in engine noise. There are many advantages to ACE; first: reduced engine noise. The new Cummins Tier 3 engines are already 4 to 6 decibels lower than the Tier 2 engines, but with reduced engine RPM the noise level is reduced further. Besides the engine's exhaust, the engine cooling fan and other auxiliary items on the engine also create noise. This noise is directly related to the speed or RPM of the engine. Second: improved fuel efficiency. It's long been known that you can save fuel in tillage application by shifting up a gear and reducing engine RPM. ACE technology allows you to do the same thing in a self-propelled high clearance sprayer. If you normally drive 14 MPH spraying, rather than driving at full throttle and full pump displacement in 1st range, shift to a higher range and let the machine reduce the engine RPM automatically. Third: faster engine response. The name of the game is torque, and the peak torque range in an engine is not at full engine RPM. With ACE technology, the engine is running closer to its peak torque. The engine does not need to have as much load applied to it to reach its peak torque. Under most situations, you never see or feel the load being applied because the amount of torque is already high enough to overcome the load. Fourth: enhanced braking performance. The engine is the primary braking force on the machine. The problem that can occur is putting too much force to the engine and causing an over-speed situation. ACE technology matches the pump displacement reduction to the engine's RPM. In other words, the engine slows down as you slow the machine. This makes the chances of over-speed much more difficult. For 2007, the STS machines are powered by the following engines: STS10, Cummins QSB 6.7L 215 HP with 225 power bulge; Optional: Cummins QSB 6.7L 275HP; STS12, Cummins QSB 6.7L 275HP; and STS16, Cummins QSL 8.9L 365HP.
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