Title:
FUEL CONTROL DEVICE OF ENGINE WITH SUPERCHARGER
Document Type and Number:
Japanese Patent JP2016148269
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel control device of an engine with a supercharger, the fuel control device enabling over-speed of a turbine to be surely prevented while avoiding large reduction of a boost pressure.SOLUTION: The fuel control device of an engine with a supercharger comprises hydrogen injectors 17, 18 feeding hydrogen to an engine 10, CNG injectors 217, 218 feeding CNG to the engine 10, a turbine rotation sensor 107 detecting number of revolutions of a turbine 301, and a control unit 100 controlling the injectors 17, 18, 217, 218 in such a way that the number of revolutions of the turbine detected by the turbine rotation sensor 107 becomes lower than an allowable number of revolutions. The control unit 100 controls the injectors 17, 18, 217, 218 in such a way that, during normal operation, hydrogen and CNG are together used at a ratio of 50/50, an excess air ratio is set to be λ=1.8 that is approximate to a lean limit, and in the time of approaching to a limit when the number of revolutions of the turbine exceeds a reference number of revolutions that is lower than the allowable number of revolutions, the ratio of hydrogen increases while the ratio of the CNG decreases.SELECTED DRAWING: Figure 2
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Inventors:
DOSONO KAZUYASU
Application Number:
JP2015024982A
Publication Date:
August 18, 2016
Filing Date:
February 12, 2015
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
F02D19/08; F02D23/02; F02D23/00
Domestic Patent References:
| JP2010043628A | 2010-02-25 | |||
| JP2010168949A | 2010-08-05 | |||
| JP2014206055A | 2014-10-30 | |||
| JP2004245133A | 2004-09-02 |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Tsutomu Fukunari
Masataka Otani
Tsutomu Fukunari