Fluid sprinkling – spraying – and diffusing – Unitary injection nozzle and pump or accumulator plunger – Accumulator plunger biased to discharge fluid
Patent
1998-02-10
2000-11-21
Weldon, Kevin
Fluid sprinkling, spraying, and diffusing
Unitary injection nozzle and pump or accumulator plunger
Accumulator plunger biased to discharge fluid
239 95, 239 96, F02M 4702, F02M 4550
Patent
active
061490733
ABSTRACT:
A wear and scuff-resistant plunger for use in high pressure fuel system components in internal combustion engines is provided. The plunger, which is formed of a high thermal expansion, high hardness ceramic with a thermal expansion coefficient preferably greater than 6.times.10.sup.-6 /.degree. C. and a hardness preferably greater than 800 Kg/mM.sup.2, maintains a desired optimum minimal diametral clearance while avoiding excessive fuel leakage and efficient plunger function without scuffing or sticking under the high axial, side and pressure loads and variable quality fuels encountered in the fuel system operating environment. Preferred high thermal expansion, high hardness ceramics are zirconia, alumina-zirconia and alumina.
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patent: 5215449 (1993-06-01), Llija
patent: 5409165 (1995-04-01), Carroll, III et al.
patent: 5423302 (1995-06-01), Glassey
patent: 5611317 (1997-03-01), Peters et al.
Bosch Diesel Distributor Injection Pump Systems-Modular Concept and Further Development, H.E. Tschoke et al., pp. 138-143.
A new high pressure distributor pump for mid-range diesel engines, Idjordjevic Msae et al., pp. 45-62.
Bentz Joseph C.
Carroll, III John T.
Hickey Dan K.
Naylor Malcolm G.
Perr J. Victor
Cummins Engine Company, Inc.
Leedom Jr. Charles M.
Robinson Eric J.
Weldon Kevin
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