US2019558A

US2019558A - Multicylinder internal combustion engine

Info

Publication number: US2019558A
Application number: US451756A
Authority: US
Inventors: Alanson P Brush
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-05-12
Filing date: 1930-05-12
Publication date: 1935-11-05
Anticipated expiration: 1952-11-05

Description

Nov. 5, 1935. A. P. BRUSH 2,019,558

MULTICYLINDER INTERNAL COMBUSTION ENGINE Filed May 12, 1950 5 Sheets-Sheet 1 INVENTOR ATTORNEYS 3 SheetsSheet 2 INVENTOR ATTORNEYS Nov. 5, 1935. A. P. BRUSH MULTICYLINDER INTERNAL COMBUSTION ENGINE Filed May 12, 1950 Nov. 5, 1935. A. P. BRUSH MULTICYLINDER INTERNAL COMBUSTION ENGINE I Filed May 12, 1930 5 Sheets-Sheet 3 ATTORN EYS Patented Nov. 5, 1935 UNITED STATES PA'TE'NTOFFICE Alanson 1. Brush, Detroit, Mich.

Application May 12, 1930, Serial No. 451,756

8 Claims.

The invention relates to multi-cylinder internal combustion engines of the V-type and has more particular reference to a construction adapted for the economical manufacture of engines having a relatively large number of cylinders such as twelves and sixteens. It is the primary object of the invention to simplify the construction so as to facilitate work both in the foundry and in the machine shop. To this end the invention consists in the construction as hereinafter set forth.

In the drawings:

Figure 1 isa vertical cross section through an engine of my improved construction;

Figure 2 is an elevation of one of the sections with the complementary sections removed.

Figures 3 and 4 are enlarged sections through the crank shaft bearing supports and split bearings showing the manner of assembling the same.

In general construction my improved engine is of a V-type in which the included angle between cylinder axis is relatively small, such for instance as thirty degrees. To permit of this the valves and, operating mechanism are arranged on the outer sides of the cylinder blocks which latter are of the L-type. Each of the V-blocks forms a completely operative unit which may be run and tested independent of the complementary block, thereby facilitating proper tuning.

To simplify manufacture, the blocks are formed of separate castings, each including a bank of cylinders and one-half of the crank case together with half bearing supports for the engine crank shaft. By thus opening into the crank case, foundry work is simplified and as each of the sections can be independently finished, machining operations are correspondingly simplified.

In detail, A and A are the two blocks, each having a, bank of cylinders B with an L-head C. The water jacket D surrounds the cylinders and L-head and extends inward to the meeting plane of the blocks. Lugs E may be arranged at suitable intervals extending upward from the water jacket and forming a means for securing the two blocks to each other by screws or bolts F. Each block has also formed integral therewith onehalf section G of the crank case. At suitable points in the length of the block are transversely extending division Walls H which form supporting webs for apertured lugs I constituting cam shaft bearing supports and the half bearing supports J for the crank shaft bearings. The half bearing supports J are secured to each other by bolts K extending transversely through one of the crank case sections and engaging a threaded socket in the complementary section as shown in Figure 1.

Each of the blocks is provided with a detachable head L and an oil pan M is secured to the bottom of the crank case sections. The valves 5 N have their stems extending parallel to the cylinder axes and tappets O are slidably mounted in bearings P projecting from the cylinder bank so as to be arranged in operative relation to the cam shaft of the bearings I. The engine crank 10 shaft Q is of conventional construction journalled in bearings engaging the half bearing supports J. These half bearings supports J are accurately aligned by placing therein half bearing bushings R having a horizontal plane of division 15 or perpendicular to the plane of division of the half bearing supports J. The external diameter of the bushing is slightly greater than the internal diameter of the half bearings for receiving the same so that when the bolts K are tightened go the bushings will be firmly clamped and held from displacement.

With the construction as described, the two block sections A and A are separately machined and are then assembled about the crank shaft as 25 illustrated in Figures 3 and 4, the bushing sections R being first placed in engagement with the corresponding journals on the crank shaft and the half bearings J being then drawn together about the bushings by the bolts K. Dowels 30 S set in one of the half bearings J and engaging corresponding apertures in the bushing sections hold the latter in exact registration. The two block sections are held in longitudinal registration either by an end plate T as indicated in Fig- 35 ure 2 or by a key U engaging slots U in the meeting faces of the sections. Thus the transverse arrangement of the splits in the crank shaft bearings and bearing supports will hold the two block sections with the axis of the bearings coincident with the axis of the crank shaft, while the end plate or key insures exact registration longitudinally,

What I claim as my invention is: 4:5

1. A multi-cylinder V-type engine comprising two separate sections meeting in the vertical plane of the crank shaft, each section having integral therewith a crank case section and integral half crank shaft bearing supports, a plurality of 50 crank shaft bearing inserts non-rotatively engaging said half bearing supports and bridging the meeting plane therebetween, said inserts cooperating to align said half bearing supports of each section with each other and. with the axis of the 5 crank shaft, and means for clamping said aligned sections to each other.

2. A multi-cylinder V-type engine comprising two separate sections meeting in the vertical plane of the crank shaft, each section having integral therewith a crank case section and integral half crank shaft bearing supports, a crank shaft, split bearing bushings engaging said crank shaft and said half bearing supports arranged with their plane of division transverse to the plane of division between said sections, means for holding said bushings from rotation in said supports and means for clamping said sections to each other. 3. A multi-cylinder V-type engine comprising two separate sections meeting in the vertical plane of the crank shaft, each section having integral therewith a crank case section and integral half crank shaft bearing supports, a crank shaft, split bearing bushings engaging said crank shaft and said half bearing supports arranged with their plane of division transverse to the plane of division between said sections, means for holding said bushings from rotation in said supports and means for clamping said sections to 10 each other, including clamping means for thei complementary portions of said bearing supports.

- 1 ALANSON P. BRUSH.