Gm Global Technolgoy Operations, Inc.

Mitsubishi Denki Kabushiki Kaisha

Hiroshi Takayama

Russell Harmon Bosch

Randolph Kwok-Kin Chiu

Charles Dale Oakley

Masamitsu Okamura

Norihiko Toyoda

Keisuke Okajima

Toshiaki Kunugi

Magnus Glavmo

Masakatsu Kawasaki

A sandwich panel is manufactured-by providing: a first step (a), (b) of attaching another end portion of an insert whose one end portion is made sharp to an inner side of a facing member in which a hole is cut in advance; a second step (c) of pressing the insert into the core member such that the one end portion of the insert force-cuts a core member ; and a third step (d) of attaching another facing member to a side of the core member opposing the insert-inserting side thereof.

Sandwich panel and method of manufacturing the sandwich panel

A glow sensor which combines functions of a diesel engine glow plug with an ion sensor for sensing engine combustion initiation and characteristics includes a ceramic rod retained in a supporting ceramic sleeve carried by a metal shell mountable in an engine cylinder head. The ceramic rod includes a heating element in a glow tip at the inner end of the rod which, in use, extends into an engine combustion chamber or pre-chamber. A conductive material such as platinum or palladium is coated on the lower end of the glow tip and connected by a conductor with a source of electric voltage. In use, the voltage produces a current carried by electrons generated by ionization of the combustion chamber gases during combustion. The current varies with the degree of ionization and the amount of electrons generated during various phases of the combustion event. The resulting information is usable in controlling engine operation or evaluating its operation for test purposes. Various construction features of disclosed embodiments include an internal conductor through the ceramic rod from the platinum or palladium material to a lead or an external conductor applied on the surface of the ceramic rod with which an insulating ceramic sleeve is utilized to mount the rod within its supporting shell. Grounding connections through an additional lead from the outer end of the ceramic rod or via metallic connections through the ceramic sleeve to the shell are alternatively disclosed.

Glow sensor-ceramic tip

Growing community of inventors

Tokyo, Japan

Hiroshi Takayama