Lubrication – Systems – Crank-type machines
Patent
1989-06-20
1990-06-26
Dority, Carroll B.
Lubrication
Systems
Crank-type machines
184 18, F01M 100
Patent
active
049364170
ABSTRACT:
A lubricating system is disclosed which includes a splash cooling of the pistons of an internal-combustion engine by spraying nozzles, the cooling jets of which are aimed at the interior surfaces of the pistons. In order to achieve, after the start of an internal-combustion engine, a rapid buildup of the lubricant pressure, the lubricant supply to the spraying nozzles is interrupted in this initial operating phase. Since, in the starting phase, the lubricating oil supply to the camshafts can be reduced considerably or can even be switched off completely without damaging the bearings, the spraying nozzles and the camshafts receive a common lubricating oil supply which can be controlled centrally by means of control valves. It is advantageous that already existing lubricant ducts may be used, and the spraying nozzles can be constructed in a simple manner without any integrated control valves. It is also advantageous that the spraying nozzles must no longer be arranged at the central main duct above the crankshaft, which is disadvantageous with respect to accessibility and space conditions, but in the area of the camshafts which, in the case of a V-Engine, may be arranged in an advantageous lateral crankcase area.
REFERENCES:
patent: 1996817 (1935-04-01), Mack
patent: 2800119 (1955-05-01), Schmidl
patent: 2991770 (1961-07-01), Rausch
Groddeck Michael
Reifenscheid Otto
Wolters Gerd-Michael
Dority Carroll B.
MTU Friedrichshafen GmbH
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