The CabRunner Integrated Power System (IPS) by Gates Corp. allows drivers to operate all cab systems – including heating and air conditioning — without running the main engine.

Using a proprietary clutch that allows the accessory drive on the engine to be driven from a remote source, the CabRunner IPS draws power from a frame-mounted diesel engine.

Simply put, rather than using the main engine to run the alternator and the AC compressor, a flexible driveshaft connects the two-cylinder, liquid-cooled diesel engine to the reconfigured pulley and belt system on the engine. The small engine drives the components rather than the large engine, saving up to 60% on diesel fuel compared to idling the main truck motor, and reducing NOx and CO2 emissions.

This is accomplished by an innovative pulley design that allows either the CabRunner IPS or the truck engine to operate the Accessory Belt Drive System (ABDS). A two-way clutch allows drive input from the IPS when the main engine is shut off, and returns drive capability to the main engine while on the highway.

While the CabRunner IPS is powering the system, it’s just like having the main engine running. The alternator is turning, charging the batteries, and the AC compressor is active (if desired) powering the truck’s AC system, just as it would be if the big engine were running. All other electrical accessories will work the same way, so an inverter could be used to power 120-volt appliances.

The CabRunner is liquid-cooled, providing hot coolant to run the cab heaters and warming the main engine for easy cold-weather startups.

No additional compressors, alternators or condensers are required, installation is non-invasive except for connections to the coolant circuit, and belts and hoses remain subject to the same standard maintenance schedule as tractor engine components. Fuel is supplied from the truck tanks, and the controls are mounted in the sleeper heater/AC climate control panel.

Gates estimates annual fuel savings of $3160, based on 2100 hours of annual idle time at $1.00/hr in fuel costs.

The 385-lb CabRunner requires approximately 18 in. of clear frame rail between the quarter fender and fuel tank on the passenger side of the cab. Installation time runs between 12 and 18 hours for a standard install, and each CabRunner IPS comes with an installation kit specifically tailored for the truck make and model.