| 摘要 |
An internal combustion engine that can operate with 100% liquid fuel, 100% gaseous fuel and any combination in between includes a pressure expansion device used to reduce gaseous fuel pressure from the storage tank pressure to gaseous fuel injection pressure, and to extract energy from the expansion process. In one embodiment, the pressure expansion device is an air compressor that compresses intake air to an elevated pressure. In another embodiment, the pressure expansion device is a turbine, connecting to an alternator by a coupling, to generate electricity to charge the battery. The temperature of the pressure expansion device is controlled by a circuit of engine coolant or ambient air to avoid excessive deviation from room temperature. The cooled ambient air is used to cool the cabin temperature. In a further embodiment, the pressure expansion device is a turbocharger that comprises of a turbine and a compression fan. |
| 主权项 |
1. An internal combustion engine configured to operate with 100% liquid fuel, 100% gaseous fuel or any combination thereof, comprising:
a liquid fuel internal combustion engine comprising an exhaust turbocharger system as a first stage air compressor to compress the ambient air, the exhaust turbocharger system comprising an exhaust manifold to gather combustion products, channeling them to an exhaust system; and a gaseous fuel injection system comprising:
a plurality of storage tank of gaseous fuel;a gaseous filler to refuel the storage tank;a plurality of gaseous fuel injectors to inject gaseous fuel into an intake manifold, or near an intake valve, or directly into cylinders of the engine;a tank valve on each tank to channel the gaseous fuel from the filler to fill the storage tank, to channel the gaseous fuel from the storage tank to a pressure expansion device, or to shut off gas flow when the engine is turned off; andan Electronic Control Module (ECM) that controls the gaseous fuel injectors' pulse widths, the amount of fuel the injectors inject into the engine, and the number of pulses per stroke. |
