Patents by Inventor Yoshikuni Satou

Yoshikuni Satou has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for distinguishing liquid reducing agent and exhaust emission control apparatus of engine
    Patent number: 8293180
    Abstract: An apparatus for distinguishing a liquid reducing agent which judges empty with a higher precision than heretofore is provided. The apparatus for distinguishing a liquid reducing agent is provided with a concentration sensor and a liquid-level sensor in storage tank of liquid reducing agent, and is characterized in that empty is judged by utilizing the liquid-level based on the liquid-level sensor in addition to the concentration based on the concentration sensor (step 3 and step 5). Even if a bubble is adhering to the concentration sensor and an erroneous signal indicative of empty is output although the residual quantity of liquid reducing agent is sufficient, the liquid-level sensor does not output a signal indicative of empty. Consequently, erroneous judgment is prevented and accurate judgment can be made as compared to heretofore.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: October 23, 2012
    Assignees: Nissan Diesel Motor Co., Ltd., NGK Spark Plug Co., Ltd.
    Inventors: Hideki Matsunaga, Yoshikuni Satou, Takashi Yamamoto, Takeo Sasanuma
  • APPARATUS FOR DISTINGUISHING LIQUID REDUCING AGENT AND EXHAUST EMISSION CONTROL APPARATUS OF ENGINE
    Publication number: 20100003168
    Abstract: An apparatus for distinguishing a liquid reducing agent which judges empty with a higher precision than heretofore is provided. The apparatus for distinguishing a liquid reducing agent is provided with a concentration sensor and a liquid-level sensor in a storage tank of liquid reducing agent, and is characterized in that empty is judged by utilizing the liquid-level based on the liquid-level sensor in addition to the concentration based on the concentration sensor (step 3 and step 5). Even if a bubble is adhering to the concentration sensor and an erroneous signal indicative of empty is output although the residual quantity of liquid reducing agent is sufficient, the liquid-level sensor does not output a signal indicative of empty. Consequently, erroneous judgment is prevented and accurate judgment can be made as compared to heretofore.
    Type: Application
    Filed: September 15, 2009
    Publication date: January 7, 2010
    Inventors: Hideki MATSUNAGA, Yoshikuni SATOU, Takashi YAMAMOTO, Takeo SASANUMA