Borg Warner eBooster helps engine response

The challenges faced by engine developers to manage transient response times with turbocharging could be solved by Borg Warner. At CONEXPO-CON/AGG, the company showed its eBooster electrically-driven compressor, which is now available to off-highway OEMs.

March 13, 2017 Read time: 1 min

eBooster delivers boost on demand until an engine’s turbocharger catches up and takes over.

The challenges faced by engine developers to manage transient response times with turbocharging could be solved by 8603 Borg Warner. At CONEXPO-CON/AGG, the company showed its eBooster electrically-driven compressor, which is now available to off-highway OEMs.
Using a 48-volt electric supply, the eBooster delivers boost on-demand until an engine’s main turbocharger catches up and builds enough pressure to take over. At this point, the electrically-driven compressor stops running.

This technology is said to assist smaller, more fuel-efficient engines in delivering the power and torque of larger displacement engines. Borg Warner’s eBooster is equipped with a water-cooled core, and permanently lubricated bearings.

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Big power from Kubota’s V3307 micro-hybrid engine for short, high-demand working

At its launch, Ko Shiozaki, Kubota manager for sales promotions in the engine division, said that the V3307 provides power assistance during peak performance, using electric power to compensate for high loads instantaneously.

For some applications, high load is required for only a fraction of the total work time. The engine’s 10kW electric motor-assist function allows customers to match those high load demands and select an engine with an output power tailored to the low and medium load regions of frequent use.

The engine has a straightforward design with three main components: a DC converter, a lithium-ion battery, and a motor generator attached to the existing engine model.

The hybrid system is controlled by the engine control unit (ECU). This is made possible by rewriting the software in the existing ECU, available only to Kubota engines, according to the manufacturer. No additional ECU is required for hybrid control.

The engine is equipped with a 48V motor generator, providing high torque with quick response – boosting overall work efficiency. At low speeds, the motor provides up to 70Nm of torque assistance.

Designed for applications that demand an immediate response to instantaneous peak overloads within the typical machine duty cycle, the power assist Micro-Hybrid system supports the engine by delivering an additional electrical power boost of up to 10kW.

An instantly available torque curve offers efficiency boosts at the most crucial time, while recuperating and recharging its battery pack when not initiated, says Kubota, adding that these innovations push the boundaries in areas of fuel efficiency, power density and adaptability.

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