Title:
INTERNAL COMBUSTION ENGINE BLOW-BY GAS PROCESSING METHOD AND BLOW-BY GAS PROCESSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/042327
Kind Code:
A1
Abstract:
A blow-by gas processing device of an internal combustion engine (1) introduces fresh air into a crank case (3) via a fresh air introduction passage (21) in order to recirculate blow-by gas in the crank case (3) to a combustion chamber (2). If the amount of fresh air that is introduced is increased, dissolving of NOx components into oil decreases concomitant with a rise in a ventilation rate, but, conversely, if the temperature of a merged gas of the blow-by gas and fresh air is lower than a certain temperature (T1), dissolving increases. In the present invention, a target merged gas temperature is set so as to avoid the generation of condensed water, and the amount of introduced fresh air is controlled to achieve the target merged gas temperature, taking into account the amount of the blow-by gas, the temperature of the blow-by gas, and the fresh air temperature.
Inventors:
SUGITA TAKEHARU (JP)
SUZUKI RIKA (JP)
KAWATA TOMOHIRO (JP)
SUZUKI RIKA (JP)
KAWATA TOMOHIRO (JP)
Application Number:
PCT/JP2021/034054
Publication Date:
March 23, 2023
Filing Date:
September 16, 2021
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
F01M13/00
Foreign References:
| JP2008057510A | 2008-03-13 | |||
| US20140290241A1 | 2014-10-02 | |||
| JP2021080913A | 2021-05-27 | |||
| JP2017072046A | 2017-04-13 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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