Abstract: A turbo-generator system generates electricity from the exhaust gas of an internal combustion engine 1. The electric current generated by the generator 11 (e.g. a switched reluctance machine) is controlled so as to maintain the turbine 3 at a first pre-set rotational speed. The amount of electric current demanded from the generator 11 is limited or reduced if the electrical system 17 cannot accept a greater electric current or if the exhaust gas pressure upstream of the turbine 3 is too great. In such cases, the proportion of the exhaust gas permitted to bypass the turbine 3 is controlled so as to maintain the turbine 3 at a second pre-set rotational speed that is slightly greater than the first. The turbine's preset speeds are chosen to maximize electrical generating efficiency and for turbine safety. The system maximizes the amount of electricity generated, avoids excessive exhaust gas back-pressure on the engine 1, and avoids overloading the electrical system 17.

Abstract: An integrated starter generator device comprising a housing, a stator and a rotor contained within the housing, the device further comprising control electronics operable to configure the device as either a starter or generator and contained entirely within the housing. The device may include a high current terminal having brass and rubber bonded together. The rubber forms both a sealing and an insulating function.

Abstract: A turbo-generator system generates electricity from the exhaust gas of an internal combustion engine 1. The electric current generated by the generator 11 (e.g. a switched reluctance machine) is controlled so as to maintain the turbine 3 at a first pre-set rotational speed. The amount of electric current demanded from the generator 11 is limited or reduced if the electrical system 17 cannot accept a greater electric current or if the exhaust gas pressure upstream of the turbine 3 is too great. In such cases, the proportion of the exhaust gas permitted to bypass the turbine 3 is controlled so as to maintain the turbine 3 at a second pre-set rotational speed that is slightly greater than the first. The turbine's preset speeds are chosen to maximise electrical generating efficiency and for turbine safety. The system maximises the amount of electricity generated, avoids excessive exhaust gas back-pressure on the engine 1, and avoids overloading the electrical system 17.

Abstract: Flow control apparatus for an electrical machine and comprising an arrangement of shaped chambers and passages for conveying a liquid coolant. The rate of heat transfer from certain portions of the machine to the coolant is determined by the varying velocity of the liquid through the chambers, resulting in a generally uniform cooling of those portions of the machine.

Abstract: Flow control apparatus for an electrical machine and comprising an arrangement of shaped chambers and passages for conveying a liquid coolant. The rate of heat transfer from certain portions of the machine to the coolant is determined by the varying velocity of the liquid through the chambers, resulting in a generally uniform cooling of those portions of the machine.

Abstract: Flow control apparatus for an electrical machine and comprising an arrangement of shaped chambers and passages for conveying a liquid coolant. The rate of heat transfer from certain portions of the machine to the coolant is determined by the varying velocity of the liquid through the chambers, resulting in a generally uniform cooling of those portions of the machine.

Abstract: An integrated starter generator device comprising a housing, a stator and a rotor contained within the housing, the device further comprising control electronics operable to configure the device as either a starter or generator and contained entirely within the housing. The device may include a high current terminal having brass and rubber bonded together. The rubber forms both a sealing and an insulating function.