Locomotive idling represents a significant drain on resources and contributes to environmental concerns. Automated Engine Start/Stop (AESS) devices offer a powerful solution, dramatically reducing fuel consumption for switchers and other locomotives that spend considerable time at idle.
The AESS system intelligently manages locomotive operation by automatically shutting down the main engine when idling is unnecessary. Sophisticated sensors continuously monitor critical parameters including battery voltage, air pressure, engine coolant temperature, and ambient temperature to determine whether continuous engine operation is essential. Integral Control System’s AESS is highly customizable, allowing for fine-tuning to align with each company’s unique operational profile.
A key feature of the AESS system is its seamless integration with Auxiliary Power Units (APUs). Typically a compact diesel generator (20-40 hp), the APU automatically engages after a pre-determined idle period. Its primary functions are maintaining engine temperature and powering essential auxiliary systems, while consuming over 90% less fuel than the main engine – keeping the locomotive ready for its next task with minimal energy expenditure.
The benefits of implementing AESS systems are substantial: significant fuel savings and a marked reduction in air and noise pollution. EPA studies indicate that installing an Idle Control system can reduce annual fuel consumption by up to 26,500 gallons annually, depending on daily idle time. Furthermore, air pollutant emissions can be reduced by as much as 90%, and locomotive noise levels at idle decrease by up to 15 decibels, which a considerable improvement for both employees and surrounding communities.
Successful implementation requires careful planning and consideration. To maximize effectiveness, minimizing unnecessary engine starts and stops is crucial. Maintaining battery health and avoiding air leaks are also essential to prevent premature restarts. Crucially, operator training and buy-in are vital; ensuring that operational staff understand and work with the system will optimize its performance.
Integral Control’s AESS system stands out for its flexibility and adaptability. It’s fully integration ready for many devices including APUs, features a heavy-duty starter motor option, and is AAR S-5502 compliant. Most importantly, we collaborate closely with our clients to tailor the system precisely to their equipment and operational needs for maximum efficiency gains.
References:
LMOA-AESS-FINAL.pdf – AESS Issues and Challenges