초록 ▼

A power transfer system for converting recurring wave movement within the ocean to electrical energy. The system comprises pressure sensing structure such as a pressure transducer 10 or combination movable magnet and coil 50, positioned below water level and at a location 20 of wave movement for (i)

A power transfer system for converting recurring wave movement within the ocean to electrical energy. The system comprises pressure sensing structure such as a pressure transducer 10 or combination movable magnet and coil 50, positioned below water level and at a location 20 of wave movement for (i) registering changes in height of water 18 and 19 above the pressure sensing structure 10, 50 and (ii) providing electrical power output at the ocean floor corresponding to changes in gravity force associated with the changes in the height of water. A transfer medium 12 is coupled at one end to the pressure sensing structure and extends at a second end to a shore location. A power receiving device such as a bank of storage batteries 14 or electrical load is coupled to the transfer medium at the shore location for receiving the power output from the transfer medium and for processing the power for use.

대표청구항 ▼

A power transfer system for converting recurring wave movement within the ocean to electrical energy. The system comprises pressure sensing structure such as a pressure transducer 10 or combination movable magnet and coil 50, positioned below water level and at a location 20 of wave movement for (i)

A power transfer system for converting recurring wave movement within the ocean to electrical energy. The system comprises pressure sensing structure such as a pressure transducer 10 or combination movable magnet and coil 50, positioned below water level and at a location 20 of wave movement for (i) registering changes in height of water 18 and 19 above the pressure sensing structure 10, 50 and (ii) providing electrical power output at the ocean floor corresponding to changes in gravity force associated with the changes in the height of water. A transfer medium 12 is coupled at one end to the pressure sensing structure and extends at a second end to a shore location. A power receiving device such as a bank of storage batteries 14 or electrical load is coupled to the transfer medium at the shore location for receiving the power output from the transfer medium and for processing the power for use. ated by the electric motor is to be used to assist the output power from the engine, depending on the driving condition of the vehicle; an air-fuel controller for changing the air-fuel ratio of the mixture, which is to be supplied to the engine, to a condition leaner or richer than the stoichiometric air-fuel ratio; a determination threshold value changing means for changing the determination threshold value, depending on whether the air-fuel ratio of the mixture is leaner or richer than the stoichiometric air-fuel ratio; an exhaust cleaner having an oxygen concentration measurement device, provided in an exhaust system of the engine, for measuring oxygen concentration in exhaust gas, and a nitrogen oxide reduction device for absorbing nitrogen oxide in the exhaust gas when the oxygen concentration in the exhaust gas is high and for reducing the absorbed nitrogen oxide when the oxygen concentration in the exhaust gas is low; a reduction device means for setting the air-fuel ratio of the mixture to the condition richer than the stoichiometric air-fuel ratio of the mixture to the condition richer than the stoichiometric air-fuel ratio so as to reduce the oxygen concentration in the exhaust gas, when the air-fuel ratio of the mixture, which is to be supplied to the engine, is leaner than the stoichiometric air-fuel ratio; and a determination threshold value change prohibiting means for prohibiting the operation of the determination threshold value changing means when the reduction means changes the air-fuel ratio of the mixture from the condition leaner than the stoichiometric air-fuel ratio to the condition richer than the stoichiometric air-fuel ratio. 4. A control system for a hybrid vehicle according to claim 3, further comprising: a vehicle speed measuring device for detecting the speed of the vehicle, wherein the reduction device sets the air-fuel ratio of the mixture to the condition richer than the stoichiometric air-fuel ratio so as to reduce the oxygen concentration in the exhaust gas at a time interval depending on the vehicle speed detected by the vehicle speed measuring device. 5. A control system for a hybrid vehicle according to claim 3, further comprising a terminating means for terminating the prohibition of the change of the determination threshold value while the determination threshold value change prohibiting means is prohibiting the change of the determination threshold value, when the air-fuel ratio controller detects that the air-fuel ratio of the mixture is leaner than the stoichiometric air-fuel ratio, or when the probation of the change of the determination threshold value is maintained for a specified time. 6. A control system for a hybrid vehicle according to claim 4, further comprising a terminating means for terminating the prohibition of the change of the determination threshold value while the determination threshold value change prohibiting means prohibits the change of the determination threshold value, when the air-fuel ratio controller detects that the air-fuel ratio of the mixture is leaner than the stoichiometric air-fuel ratio, or when the prohibition of the change of the determination threshold value has been maintained for a specified time. 7. A control method for a hybrid vehicle having a combustion engine for outputting a driving force; an electric motor for generating a force for assisting the output from the engine, depending on driving conditions; and a power storage unit for storing electric energy generated by the motor acting as a generator using the output from the engine and electric energy regenerated by the motor when the vehicle decelerates; the control method comprising the steps of: determining whether to assist the output from the engine by the motor based on a determination threshold value as the standard, depending on the driving conditions of the vehicle; changing the air-fuel ratio of the mixture, which is to be supplied to the engine, to a conditi on leaner or richer than the stoichiometric air-fuel ratio; and changing the determination threshold value depending on whether the air-fuel ratio of the mixture is leaner or richer than the stoichiometric air-fuel ratio. 8. A control method according to claim 7, further comprising the step of terminating the prohibition of the change of the determination threshold value while the change of the determination threshold value is prohibited, when the air-fuel ratio of the mixture is determined to be leaner than the stoichiometric air-fuel ratio, or when the prohibition of the change of the determination threshold value has been maintained for a specified time. 9. A control method for a hybrid vehicle having a combustion engine for outputting a driving force; and electric motor for generating a force for assisting the output from the engine, depending on driving conditions; and a power storage unit for storing electric energy generated by the motor acting as a generator using the output from the engine and electric energy regenerate by the motor when the vehicle decelerates; the control system comprising the steps of: determining whether to assist the output from the engine by the motor based on a determination threshold value as the standard, depending on the driving condition of the vehicle; changing the air-fuel ratio of the mixture, which is to be supplied to the engine, to a condition leaner or richer than the stoichiometric air-fuel ratio; and changing the determination threshold value depending on whether the air-fuel ratio of the mixture is leaner or richer than the stoichiometric air-fuel ratio; measuring oxygen concentration in exhaust gas; absorbing nitrogen oxide in the exhaust gas when the oxygen concentration in the exhaust gas is high; reducing the absorbed nitrogen oxide when the oxygen concentration in the exhaust gas is low; setting the air-fuel ratio of the mixture to a condition richer than the stoichiometric air-fuel ratio so as to reduce the oxygen concentration in the exhaust gas, when the air-fuel ratio of the mixture, which is to be supplied to the engine, is leaner than the stoichiometric air-fuel ratio; and prohibiting the change of the determination threshold value when the air-fuel ratio of the mixture is changed from the condition leaner than the stoichiometric air-fuel ratio to the condition richer than the stoichiometric air-fuel ratio. 10. A control method according to claim 9, further comprising the steps of detecting the speed of the vehicle, and setting the air-fuel ratio so as to reduce the oxygen concentration in the exhaust gas at a time interval depending on the vehicle speed detected. 11. A control method according to claim 9, further comprising the step of terminating the prohibition of the change of the determination threshold value while the change of the determination threshold value is prohibited, when the air-fuel ratio of the mixture is determined to be leaner than the stoichiometric air-fuel ratio, or when the prohibition of the change of the determination threshold value has been maintained for a specified time. 12. The control system as recited in claim 1, wherein the determination threshold value is one of a throttle assist trigger threshold value and an air intake passage pressure assist trigger threshold value. 13. The control system as recited in claim 3, wherein the determination threshold value is one of a throttle assist trigger threshold value and an air intake passage pressure assist trigger threshold value.