An object of the present invention is to provide an abnormality detection device that is used for an internal combustion engine whose operation is controlled in accordance with the properties of employed fuel, and capable of accurately detecting an abnorma...

In performing the determination of quality of fuel such as diesel fuel, reliability and accuracy of determination of quality is enhanced. A value of ignition delay and a value of a flame spread rate are measured with respect to fuel which is an object to b...

A diesel engine fuel soundness control system includes: a density measuring instrument 11 that measures a density of a fuel F of a diesel engine (D/E) in real time; a micro carbon residue (MCR) measuring instrument 12 that measures an MCR in the fuel F of ...

The types of gasolines having different distillation characteristics and various compositions are identified accurately and rapidly. A pulse voltage is applied for a predetermined time to a liquid type identifying sensor heater including a heater and an id...