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Featured researches published by Yoshiyuki Kasai.


International Congress & Exposition | 1996

The Regeneration Efficiency Improvement of the Reverse Pulse Air Regenerating DPF System

Yukihito Ichikawa; Isao Hattori; Yoshiyuki Kasai

This paper describes the system modification through the improvement of pulse air penetration into the DPF cell channels in respect to the development of a wall-flow type diesel particulate filter (DPF) system with reverse pulse air regeneration for diesel vehicles. In this system, regeneration becomes more difficult with low exhaust gas temperatures and increased DPF volume. The pressure increase in the DPF cell channels was monitored as a parameter of pulse air penetration when reverse pulse air was injected into the DPF. By maximizing the pressure increase, the pulse air injection system was modified. The modification includes various changes in the air pipe arrangement and the air injecting time. The ratio of the length to the diameter of the DPF was also evaluated in relation to the regeneration efficiency. In this study, the high aspect ratio, i.e. small diameter and long DPF, showed better regeneration efficiency. The results of this study indicate that this system can be enlarged with the above modification despite low exhaust gas temperatures.


Archive | 2008

Exhaust gas recirculation device for internal combustion engine

Minoru Machida; Toshio Yamada; Yukihito Ichikawa; Yoshiyuki Kasai


Archive | 1993

Ceramic honeycomb structure with grooves and outer coating, process of producing the same, and coating material used in the honeycomb structure

Wataru Kotani; Kunikazu Hamaguchi; Yoshiyuki Kasai


Archive | 1994

Cordierite ceramic filter

Yoshiyuki Kasai; Kazuhiko Kumazawa; Wataru Kotani


Archive | 1995

Exhaust gas filter and apparatus for treating exhaust gases using the same

Yoshiyuki Kasai; Yoshiro Ono; Ikuko Ishiyama


Archive | 2001

Honeycomb construction body, honeycomb filter and their manufacturing method

Setsu Harada; Yoshiyuki Kasai; Shinji Kawasaki; Yukio Miyairi; 節 原田; 由紀夫 宮入; 真司 川崎; 義幸 笠井


Archive | 1996

Exhaust gas purifying filter using honeycomb monolith with random length sealing portions

Yoshiyuki Kasai; Yoshiro Ono; Toshio Yamada


Archive | 2000

Ceramic honeycomb structure and process for production thereof

Yoshiyuki Kasai; Takashi Harada; Yukinari Shibagaki; Akito Higuchi


Archive | 2001

Honeycomb structure, honeycomb filter and processes for the production thereof

Takashi Harada; Yukio Miyairi; Yoshiyuki Kasai; Shinji Kawasaki


Archive | 2001

Honeycomb structure and honeycomb filter, and method of producing them

Takashi Harada; Yukio Miyairi; Yoshiyuki Kasai; Shinji Kawasaki

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