Disclosed is a glow plug diagnosis method of being able to diagnose the aging or fault of a glow plug without being affected by cooling associated with air intake/exhaust or fuel injection, the method including: a step (S102) of energizing a glow plug 1 in...

For an energization control device for a glow plug to which a plurality of glow plugs are electrically connected in parallel, there is provided a method for enabling the energization control device to detect wire breakage of the glow plugs connected theret...

To provide a heater energization control apparatus which can detect that a heater has been exchanged. When an engine is stopped, a microcomputer of a GCU enters a power save mode. When the microcomputer returns to a normal mode in response to an interrupti...

It is an object of the present invention to make the temperature of a glow plug tip extremely simply and precisely estimable. An arithmetic and control unit 23 is configured to arithmetically calculate a resistance value of a glow plug 1 on the basis of an...

An energization control apparatus for a glow plug (21) includes temperature maintaining energization means (34), and intermediate temperature raising means 35 for resuming energization of the glow plug 1 during operation of an engine EN after energization ...

A process for controlling the heating of glow plugs in a diesel engine comprises emulating the thermal behavior of the plug on heating and cooling and using this information as control data for controlling the heating process. An Independent claim is also ...