Fuel injection timing detecting apparatus for diesel engines

Details Fuel injection timing detecting apparatus for diesel engines Fuel injection timing detecting apparatus for diesel engines

1981-10-02

1983-11-22

Myracle, Jerry W.

Measuring and testing

Internal combustion engine or related engine system or...

Compression

G01M 1500

Patent

active

044161506

ABSTRACT:
A fuel injection timing detecting apparatus for Diesel engines detects the displacement of a preliminarily-magnetized pressure pin which is contained in the body of a fuel injection nozzle of a Diesel engine to be moved by the pressure of pressurized fuel supply against the spring force of a pressure spring engaged with the pressure pin. The apparatus includes a magnetic sensing device externally attached to the body of the fuel injection nozzle for sensing a magnetic variation caused by the movement of the pressure pin thereby to detect the displacement of the pressure pin, and a signal processing circuit for amplifying and processing the output signal of the magnetic sensing device, whereby the apparatus is applicable to conventional fuel injection nozzles of Diesel engines without any need to modify the nozzles and makes it possible to detect easily and accurately fuel injection timings of the fuel injection nozzles.

REFERENCES:
patent: 3344663 (1967-10-01), Dreisin et al.
patent: 3851127 (1974-11-01), Gardner, Jr. et al.

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