Auxiliary power unit for vehicles
First Claim
1. In an auxiliary power unit for operation with a vehicle main liquid-cooled diesel internal combustion engine having a liquid coolant inlet and a liquid coolant outlet, and having a radiator, and exhaust gas conduit and a vehicle diesel fuel tank, apparatus comprising:
- a small auxiliary liquid-cooled diesel internal combustion engine having an output shaft, said engine having liquid inlet means and liquid outlet means;
power producing means having an input shaft drivingly connected to said output shaft for producing electrical energy;
a first T connector for connecting in fluid communication the main engine radiator and the coolant outlet of the main engine;
first conduit means connecting in fluid communication the first T connector and the auxiliary engine liquid inlet;
a second T connector for connecting in fluid communication the main engine radiator and the coolant inlet of the main engine;
second conduit means coupling in fluid communication the main engine liquid inlet means and the auxiliary engine outlet means to complete a single closed-loop coolant path of recirculation;
pumping means for recirculating coolant through said path of recirculation including said conduit means;
heat exchanging means connected in fluid communication in said coolant path of recirculation for supplying heat to said coolant being recirculated;
means connecting the main engine exhaust gas conduit to said heat exchanging means for supplying heat thereto to, in turn, supply said heat to the coolant flowing through said heat exchanging means; and
means for conveying diesel fuel from the main engine fuel tank.
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Accused Products
Abstract
The auxiliary power unit includes an auxiliary liquid-cooled diesel internal combustion engine for driving power producing equipment on board the vehicle. A first conduit connects the main engine liquid coolant outlet in fluid communication with the auxiliary engine liquid inlet. A second conduit connects the main vehicle engine liquid inlet in fluid communication with the auxiliary engine outlet. A pump recirculates the liquid coolant through the conduits so that the auxiliary diesel engine heats the coolant and thus the main engine, when it is not in use. The engine is controlled remotely from the vehicle cab.
146 Citations
10 Claims
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1. In an auxiliary power unit for operation with a vehicle main liquid-cooled diesel internal combustion engine having a liquid coolant inlet and a liquid coolant outlet, and having a radiator, and exhaust gas conduit and a vehicle diesel fuel tank, apparatus comprising:
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a small auxiliary liquid-cooled diesel internal combustion engine having an output shaft, said engine having liquid inlet means and liquid outlet means; power producing means having an input shaft drivingly connected to said output shaft for producing electrical energy; a first T connector for connecting in fluid communication the main engine radiator and the coolant outlet of the main engine; first conduit means connecting in fluid communication the first T connector and the auxiliary engine liquid inlet; a second T connector for connecting in fluid communication the main engine radiator and the coolant inlet of the main engine; second conduit means coupling in fluid communication the main engine liquid inlet means and the auxiliary engine outlet means to complete a single closed-loop coolant path of recirculation; pumping means for recirculating coolant through said path of recirculation including said conduit means; heat exchanging means connected in fluid communication in said coolant path of recirculation for supplying heat to said coolant being recirculated; means connecting the main engine exhaust gas conduit to said heat exchanging means for supplying heat thereto to, in turn, supply said heat to the coolant flowing through said heat exchanging means; and means for conveying diesel fuel from the main engine fuel tank. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification