8/15/2019 z Injector - Types - Nippon Denso 2

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NIPPON DENSO – Top Feed Injectors

Some Denso injectors have the same part number and only differentiated by color195500 1!0 – "o# Impedence $"I% 550cc & T'( )S*uare connector + Standard,195500 1!0 – -I.- Impedence $-I% 550cc & /aroon )also S*uare connector – but need to disconnect resistor,

r the location and shape of the electrical connector polari2in3 tab is different195500 4040 – -I.- Impedence $-I% 56cc & /aroon )val 7onnector – re*uires special 8oval connector anddisconnect resistor,

 LOW  I/:;D;(7; 

195500+0900 1.9 ohms )"I, 195500+060 1.8 ohms )"I, 195500+0<10 1.9 ohms )"I,700 cc = bar )>5psi, 690(700) cc = bar )>5psi, 660 cc = bar )>5psi,

195500+1!0 1.9 ohms )"I, 195500+150 1.8 ohms )"I, 195500+150 1.8 ohms )"I,

550 cc = bar )>5psi, 460 cc = bar )>5psi, 444 cc = bar )>5psi, –

 H  IGH  I/:;D;(7;

195500+150 12.5 ohms )HI, 195500+4010 13.8 ohms )HI, 195500+1!0 12.5 ohms )HI, 195500+4040 13.7 ohms )HI,

460 cc = bar )>5psi, 460 cc = bar )>5psi, 550 cc = bar )>5psi, 545 cc = bar )>5psi,S*uare 7onnector  Note:  val 7onnector S*uare 7onnector   Note:  val 7onnector 

8/15/2019 z Injector - Types - Nippon Denso 2

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Typical Top Feed inecto!

1, O"!in#$ the upper o+rin3 seals the injector to the fuel rail> The lo#er o+rin3 seals the injector to the inta?emanifold>

4, F%el &ilte! 'a$et + to prevent debris from clo33in3 the pintle and seat> It@s just a second line of defense theinline fuel filter does the real filterin3>

, Inecto! 'ody " the case the holds the internal parts in place> This is a sealed unit and parts inside cannot be

replaced> nly the o+rin3s pintle cap and filter can be replaced on these>

, oil *indin# " this coil #hen ener3i2ed pulls the pintle up a#ay from the seat>

5, Pintle " a finely machined part that normally sits do#n on the seat to prevent fuel from passin3 throu3h theinjector> Ahen lifted a#ay from the seat the fuel is allo#ed to pass> The pintle usually only moves a fe#

thousands of an inch> This is #hy it is important to ?eep fuel system cleaned and maintained>

<, Pintle $eat " this is a precision machined surface that is matched to the pintle> The desi3n and si2e of the seatand the pintle determines the spray pattern and flo# rates>

!, Pintle cap " holds the lo#er o+rin3 in place and insulates the seat from the en3ine heat> It also protects the

 pintle from dama3e #hile the injector is removed>