Title:
CONTROLLING DEVICE FOR INTERNAL COMBUSTION ENGINES WITH TURBOCHARGERS
Document Type and Number:
WIPO Patent Application WO/2014/196004
Kind Code:
A1
Abstract:
A target air volume for achieving torque demand for an internal combustion engine with a turbocharger is back-calculated from a torque demand using a virtual air-fuel ratio. The virtual air-fuel ratio is changed from a first air-fuel ratio to a second air-fuel ratio in response to conditions for switching the operation mode from operation using the first air-fuel ratio as the target air-fuel ratio to operation using the second air-fuel ratio as the target air-fuel ratio being met. In addition, after the virtual air-fuel ratio changes from the first air-fuel ratio to the second air-fuel ratio, the target air-fuel ratio is maintained at the first air-fuel ratio until the ignition timing reaches the retard limit. In addition, in response to the ignition timing reaching the retard limit, the target air-fuel ratio is switched from the first air-fuel ratio to a third air-fuel ratio. After the target air-fuel ratio switches from the first air-fuel ratio to the third air-fuel ratio, the target air-fuel ratio is switched from the third air-fuel ratio to the second air-fuel ratio in response to the difference between the target air volume and the air volume estimated from the amount of operation of a first actuator being at or below a threshold value.
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Inventors:
SAITO YUSUKE (JP)
ADACHI NORIYASU (JP)
TANAKA SATORU (JP)
YOSHIZAKI SATOSHI (JP)
MORIGUCHI RYUTARO (JP)
MATSUMOTO YOSUKE (JP)
ADACHI NORIYASU (JP)
TANAKA SATORU (JP)
YOSHIZAKI SATOSHI (JP)
MORIGUCHI RYUTARO (JP)
MATSUMOTO YOSUKE (JP)
Application Number:
PCT/JP2013/065381
Publication Date:
December 11, 2014
Filing Date:
June 03, 2013
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
SAITO YUSUKE (JP)
ADACHI NORIYASU (JP)
TANAKA SATORU (JP)
YOSHIZAKI SATOSHI (JP)
MORIGUCHI RYUTARO (JP)
MATSUMOTO YOSUKE (JP)
SAITO YUSUKE (JP)
ADACHI NORIYASU (JP)
TANAKA SATORU (JP)
YOSHIZAKI SATOSHI (JP)
MORIGUCHI RYUTARO (JP)
MATSUMOTO YOSUKE (JP)
International Classes:
F02D13/02; F02D41/04; F02D23/00; F02P5/15
Foreign References:
| JP2009209903A | 2009-09-17 | |||
| JP2005155480A | 2005-06-16 | |||
| JP2000154747A | 2000-06-06 |
Attorney, Agent or Firm:
TAKAHASHI, Hideki et al. (JP)
Hideki Takahashi (JP)
Hideki Takahashi (JP)
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