Gasoline type identifying system and method for identifying gasoline type

1. An apparatus for identifying a liquid type of a gasoline, comprising:

a gasoline liquid type identifying chamber for causing an identified gasoline introduced into a liquid type identifying apparatus body to stay temporarily;

a liquid type identifying sensor heater provided in the gasoline liquid type identifying chamber; and

a liquid temperature sensor provided in the gasoline liquid type identifying chamber apart from the liquid type identifying sensor heater at a constant interval,

the liquid type identifying sensor heater including a heater and an identifying liquid temperature sensor provided in the vicinity of the heater, and

the apparatus further comprising an identification control portion;

the identification control portion being constructed so that a pulse voltage is applied to the liquid type identifying sensor heater for a predetermined time, and the identified gasoline staying temporarily in the gasoline liquid type identifying chamber is heated by the heater and the liquid type is identified with a voltage output difference (V 0 ) corresponding to a temperature difference between an initial temperature and a peak temperature in the identifying liquid temperature sensor.

2. The apparatus for identifying a liquid type of a gasoline according to claim 1 , wherein the voltage output difference (V 0 ) is equal to a voltage difference between an average initial voltage (V 1 ) obtained by sampling an initial voltage before application of the pulse voltage at a predetermined number of times and an average peak voltage (V 2 ) obtained by sampling a peak voltage after the application of the pulse voltage at a predetermined number of times, that is,

V 0 =V 2 −V 1.

3. The apparatus for identifying a liquid type of a gasoline according to claim 1 , wherein the identification control portion identifies a type of a gasoline with the voltage output difference (V 0 ) obtained for the identified gasoline, which is based on calibration curve data to be a correlation of a voltage output difference with a temperature for a predetermined reference gasoline prestored in the identification control portion.

4. The apparatus for identifying a liquid type of a gasoline according to claim 1 , wherein the identification control portion correlates a liquid type voltage output (Vout) for the voltage output difference (V 0 ) at a measuring temperature of the identified gasoline with an output voltage for a voltage output difference at a measuring temperature for a predetermined threshold reference gasoline and thus carries out a correction.

5. The apparatus for identifying a liquid type of a gasoline according to claim 1 , wherein the liquid type identifying sensor heater is a laminated liquid type identifying sensor heater in which a heater and an identifying liquid temperature sensor are laminated through an insulating layer.

6. The apparatus for identifying a liquid type of a gasoline according to claim 1 , wherein the heater and the identifying liquid temperature sensor in the liquid type identifying sensor heater are constituted to come in contact with the identified gasoline through a metallic fin, respectively.

7. The apparatus for identifying a liquid type of a gasoline according to claim 1 , wherein the liquid temperature sensor is constituted to come in contact with the identified gasoline through a metallic fin.

8. A method for identifying a liquid type of a gasoline, comprising the steps of:

applying a pulse voltage for a predetermined time to a liquid type identifying sensor heater including a heater and an identifying liquid temperature sensor provided in the vicinity of the heater;

heating an identified gasoline by the heater; and

identifying the liquid type with a voltage output difference (V 0 ) corresponding to a temperature difference between an initial temperature and a peak temperature in the identifying liquid temperature sensor.

9. The method for identifying a liquid type of a gasoline according to claim 8 , wherein the voltage output difference (V 0 ) is equal to a voltage difference between an average initial voltage (V 1 ) obtained by sampling an initial voltage before application of the pulse voltage at a predetermined number of times and an average peak voltage (V 2 ) obtained by sampling a peak voltage after the application of the pulse voltage at a predetermined number of times, that is,

V 0 =V 2 −V 1.

10. The method for identifying a liquid type of a gasoline according to claim 8 , wherein a type of a gasoline is identified with the voltage output difference (V 0 ) obtained for the identified gasoline, based on calibration curve data to be a correlation of a voltage output difference with a temperature for a predetermined reference gasoline which is prestored.

11. The method for identifying a liquid type of a gasoline according to claim 8 , wherein a liquid type voltage output (Vout) for the voltage output difference (V 0 ) at a measuring temperature of the identified gasoline is correlated with an output voltage for a voltage output difference at a measuring temperature for a predetermined threshold reference gasoline and is thus corrected.

12. The method for identifying a liquid type of a gasoline according to claim 8 , wherein the liquid type identifying sensor heater is a laminated liquid type identifying sensor heater in which a heater and an identifying liquid temperature sensor are laminated through an insulating layer.

13. The method for identifying a liquid type of a gasoline according to claim 8 , wherein the heater and the identifying liquid temperature sensor in the liquid type identifying sensor heater are constituted to come in contact with the identified gasoline through a metallic fin, respectively.

14. The method for identifying a liquid type of a gasoline according to claim 8 , wherein the liquid temperature sensor is constituted to come in contact with the identified gasoline through a metallic fin.

15. An apparatus for identifying a liquid type of a gasoline of a car, comprising:

the apparatus for identifying a liquid type of a gasoline according to claim 1 which is provided in one of a gasoline tank, or on an upstream side or a downstream side of a gasoline pump.

16. A method for identifying a liquid type of a gasoline of a car, comprising the step of:

identifying a type of a gasoline in a gasoline tank or on an upstream side or a downstream side of a gasoline pump by using the method for identifying a liquid type of a gasoline according to claim 8 .

17. An apparatus for reducing an exhaust gas of a car, comprising:

the apparatus for identifying a liquid type of a gasoline according to claim 1 which is provided in a gasoline tank or on an upstream side or a downstream side of a gasoline pump; and

an ignition timing control device for regulating an ignition timing based on a type of the gasoline which is identified by the apparatus for identifying a liquid type of a gasoline.

18. A method for reducing an exhaust gas of a car comprising the steps of:

identifying a type of a gasoline in a gasoline tank or on an upstream side or a downstream side of a gasoline pump by using the method for identifying a liquid type of a gasoline according to claim 8 , and

regulating an ignition timing based on the type of the gasoline which is identified by the apparatus for identifying a liquid type of a gasoline.

19. An apparatus for reducing an exhaust gas of a car, comprising:

the apparatus for identifying a liquid type of a gasoline according to claim 1 which is provided in a gasoline tank or on an upstream side or a downstream side of a gasoline pump; and

a gasoline compression control device for regulating a compressibility of the gasoline based on a type of the gasoline which is identified by the apparatus for identifying a liquid type of a gasoline.

20. A method for reducing an exhaust gas of a car, comprising the steps of:

identifying a type of a gasoline in a gasoline tank or on an upstream side or a downstream side of a gasoline pump by using the method for identifying a liquid type of a gasoline according to claim 8 , and regulating a compressibility of the gasoline based on the type of the gasoline which is identified by the apparatus for identifying a liquid type of a gasoline.

21. The apparatus for identifying a liquid type of a gasoline according to claim 2 , wherein the identification control portion identifies a type of a gasoline with the voltage output difference (V 0 ) obtained for the identified gasoline, which is based on calibration curve data to be a correlation of a voltage output difference with a temperature for a predetermined reference gasoline prestored in the identification control portion.

22. The apparatus for identifying a liquid type of a gasoline according to claim 2 , wherein the identification control portion correlates a liquid type voltage output (Vout) for the voltage output difference (V 0 ) at a measuring temperature of the identified gasoline with an output voltage for a voltage output difference at a measuring temperature for a predetermined threshold reference gasoline and thus carries out a correction.

23. The apparatus for identifying a liquid type of a gasoline according to claim 3 , wherein the identification control portion correlates a liquid type voltage output (Vout) for the voltage output difference (V 0 ) at a measuring temperature of the identified gasoline with an output voltage for a voltage output difference at a measuring temperature for a predetermined threshold reference gasoline and thus carries out a correction.

24. The method for identifying a liquid type of a gasoline according to claim 9 , wherein a type of a gasoline is identified with the voltage output difference (V 0 ) obtained for the identified gasoline, based on calibration curve data to be a correlation of a voltage output difference with a temperature for a predetermined reference gasoline which is prestored.

25. The method for identifying a liquid type of a gasoline according to claim 9 , wherein a liquid type voltage output (Vout) for the voltage output difference (V 0 ) at a measuring temperature of the identified gasoline is correlated with an output voltage for a voltage output difference at a measuring temperature for a predetermined reference gasoline and is thus corrected.

26. The method for identifying a liquid type of a gasoline according to claim 10 , wherein a liquid type voltage output (Vout) for the voltage output difference (V 0 ) at a measuring temperature of the identified gasoline is correlated with an output voltage for a voltage output difference at a measuring temperature for a predetermined threshold reference gasoline and is thus corrected.

27. An apparatus for identifying a liquid type of a gasoline of a car, comprising:

the apparatus for identifying a liquid type of a gasoline according to claim 2 which is provided in one of a gasoline tank, or on an upstream side or a downstream side of a gasoline pump.

28. An apparatus for identifying a liquid type of a gasoline of a car, comprising:

the apparatus for identifying a liquid type of a gasoline according to claim 3 which is provided in one of a gasoline tank, or on an upstream side or a downstream side of a gasoline pump.

29. An apparatus for identifying a liquid type of a gasoline of a car, comprising:

the apparatus for identifying a liquid type of a gasoline according to claim 4 which is provided in one of a gasoline tank, or on an upstream side or a downstream side of a gasoline pump.

30. A method for identifying a liquid type of a gasoline of a car, comprising the step of:

identifying a type of a gasoline in a gasoline tank or on an upstream side or a downstream side of a gasoline pump by using the method for identifying a liquid type of a gasoline according to claim 9 .

31. A method for identifying a liquid type of a gasoline of a car, comprising the step of:

identifying a type of a gasoline in a gasoline tank or on an upstream side or a downstream side of a gasoline pump by using the method for identifying a liquid type of a gasoline according to claim 10 .

32. A method for identifying a liquid type of a gasoline of a car, comprising the step of:

identifying a type of a gasoline in a gasoline tank or on an upstream side or a downstream side of a gasoline pump by using the method for identifying a liquid type of a gasoline according to claim 11 .

33. An apparatus for reducing an exhaust gas of a car, comprising:

the apparatus for identifying a liquid type of a gasoline according to claim 2 which is provided in a gasoline tank or on an upstream side or a downstream side of a gasoline pump; and

an ignition timing control device for regulating an ignition timing based on a type of the gasoline which is identified by the apparatus for identifying a liquid type of a gasoline.

34. An apparatus for reducing an exhaust gas of a car comprising:

the apparatus for identifying a liquid type of a gasoline according to claim 3 which is provided in a gasoline tank or on an upstream side or a downstream side of a gasoline pump; and

an ignition timing control device for regulating an ignition timing based on a type of the gasoline which is identified by the apparatus for identifying a liquid type of a gasoline.

35. An apparatus for reducing an exhaust gas of a car, comprising:

the apparatus for identifying a liquid type of a gasoline according to claim 4 which is provided in a gasoline tank or on an upstream side or a downstream side of a gasoline pump; and

an ignition timing control device for regulating an ignition timing based on a type of the gasoline which is identified by the apparatus for identifying a liquid type of a gasoline.