Internal-combustion engines – Multiple cylinder – Having rotary output shaft parallel to cylinders
Patent
1999-05-18
2000-12-26
Wolfe, Willis R.
Internal-combustion engines
Multiple cylinder
Having rotary output shaft parallel to cylinders
123 564, F02B 7518
Patent
active
061642525
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a reciprocating piston engine with a swivel disk whose inclination with respect to the engine shaft is adjustable and is driven by said engine shaft, in that it is connected in articulated manner both to a sliding body axially guided on the engine shaft and to a driver transmitting the drive force and spaced from the engine shaft, the pistons having in each case an articulated arrangement on which the swivel disk is in sliding engagement.
DESCRIPTION OF RELATED ART
A reciprocating piston engine of this type is known from DE-A-44 11 926 (Japanese application 81944). In said engine the driver is in two parts, a first driver part fixed to the engine shaft is arranged with a significant spacing alongside the swivel disk and a second driver part engaging in articulated manner in the first forms a lateral extension of the swivel disk. This construction suffers from the disadvantage that it significantly codetermines the axial minimum length of the engine. In addition, as a result of its lateral extension, the swivel disk having a thickened hub part has a relatively high moment of inertia with a centre of gravity relatively remote from the rotation axis, so that a sudden change to the rotational speed with corresponding inertia leads to an inclination adjustment of the swivel disk.
BRIEF SUMMARY OF THE INVENTION
The problem of the invention is to find a reciprocating piston engine of the aforementioned type which, in the case of limited effort and expenditure for its manufacture, allows a particularly compact construction opposing an adjusting movement of the swivel disk with limited inertia and frictional forces and which ensures an exact maintenance of the inner dead-point position of the reciprocating pistons so as to prevent clearances.
According to the invention, this problem is solved in that the swivel disk is in the form of an annular disk and at one point of its circumference has an at least radially inwardly open engagement space, in which engages the head of a driver firmly connected to the engine shaft.
This avoids a laterally positioned driver leading to higher inertia forces, a greater overall length and greater manufacturing costs.
Advantageous embodiments of the invention and their advantages are described hereinafter relative to the attached drawings, wherein show:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 An axial section through an embodiment of a reciprocating piston engine, in which the annular disk has its greatest inclination.
FIG. 2 A view corresponding to FIG. 1 with minimum annular disk inclination.
FIG. 3 A separate representation of the annular disk with its driver, corresponding to part of FIG. 2.
FIG. 4 A cross-section along line IV--IV in FIG. 3.
FIG. 5 A perspective view of the arrangement of FIGS. 3 and 4.
DETAILED DESCRIPTION OF THE INVENTION
The reciprocating piston engine 1 e.g. has seven pistons 2, which are juxtaposed in the circumferential direction of the engine and are guided in cylinder bores 3 of the engine case 4. The stroke movement of the pistons takes place through the engagement of an annular disk 6 inclined to the engine shaft 5 in an engagement chamber 7, which is adjacent to the closed cavity 8 of the piston 2. For a substantially clearance-free sliding engagement in each inclined position of the annular disk 6 between the latter and the spherically curved inner wall 10 of the engagement chamber 7 are bilaterally provided spherical segments 11, 12, so that the inclined disk 6 slides between them during its rotation.
The drive transmission from the engine shaft 5 to the annular disk 6 takes place through a driver 13, fixed in the engine shaft 5 and whose e.g. spherical head 15 engages in a radial bore 16 of the annular disk 6. The position of the driver head 15 is chosen in such a way that its centre 17 coincides with that of the ball of the spherical segments 11, 12. Its centre is also located on a circle interconnecting the geometrical axes of the seven pistons and also on a circle linking the cent
REFERENCES:
patent: 4175915 (1979-11-01), Black et al.
patent: 4294139 (1981-10-01), Bex et al.
patent: 4433596 (1984-02-01), Scalzo
patent: 5113809 (1992-05-01), Ellenburg
patent: 5782219 (1998-07-01), Frey et al.
Casar Roland
Kuhn Peter
Obrist Frank
Daimler Chrysler AG
Harris Katrina B.
Obrist Engineering GmbH
Wolfe Willis R.
LandOfFree
Reciprocating piston engine with a swivel disk gear does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reciprocating piston engine with a swivel disk gear, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reciprocating piston engine with a swivel disk gear will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-984237