Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
TEMPERATURE SENSOR ABNORMALITY DIAGNOSIS DEVICE, FUEL INJECTION CONTROL DEVICE, AND PRESSURE ACCUMULATION-TYPE FUEL INJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/122820
Kind Code:
A1
Abstract:
Provided are a temperature sensor abnormality diagnosis device, a fuel injection control device, and a pressure accumulation-type fuel injection device. The temperature sensor abnormality diagnosis device is capable of diagnosing whether there is an abnormality in a temperature sensor that is installed in the pressure accumulation-type fuel injection device to detect fuel temperature. By means of a high-pressure pump, the accumulation-type fuel injection device pressurizes fuel fed by a low-pressure pump, feeds the pressurized fuel to a common rail, to which a plurality of fuel injection valves are connected, and injects the fuel into cylinders of an internal combustion engine by performing open/close control of the fuel injection valves. The temperature sensor abnormality diagnosis device is installed in the accumulation-type fuel injection device and serves to determine whether there is an abnormality in the temperature sensor for measuring the temperature of the aforementioned fuel. The temperature sensor abnormality diagnosis device is provided with a fuel temperature raising means controlling section for controlling functions of the fuel temperature raising means, which serves to increase the temperature of the fuel fed to the high-pressure pump, and a sensor abnormality diagnosis section for determining whether there is an abnormality in the temperature sensor by observing an output from the temperature sensor when the temperature sensor abnormality diagnosis device performs control of functions of the fuel temperature raising means.

Inventors:
KANEKO HIROTAKA (JP)
Application Number:
PCT/JP2010/050133
Publication Date:
October 28, 2010
Filing Date:
January 08, 2010
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
BOSCH CORP (JP)
KANEKO HIROTAKA (JP)
International Classes:
F02M65/00; F02D41/38; F02D45/00; F02M53/02; F02M59/36; F02M63/00
Foreign References:
JP2003176766A2003-06-27
JP2001227790A2001-08-24
JP2002339830A2002-11-27
JPH07224737A1995-08-22
JP2007170327A2007-07-05
Attorney, Agent or Firm:
EMORI Kenji et al. (JP)
Kenji Emori (JP)
Download PDF: