Internal-combustion engines – Vibration compensating device
Patent
1984-11-20
1987-08-04
Miller, Carl Stuart
Internal-combustion engines
Vibration compensating device
123 192R, 74603, F02B 7506
Patent
active
046838490
ABSTRACT:
An engine is disclosed in which two cylinders or guideways are mounted in a Vee or L formation with a reciprocable piston or crosshead in each. Connecting rods interconnect each reciprocable member to a crankshaft. Countershafts with balance weights thereon are referred to as balance shafts and these are driven at twice cranshaft speed in opposite directions and they serve to counterbalance the secondary reciprocating inertia forces. The balance shafts are mounted substantially parallel to the crankshaft instead of at right angles to the crankshaft as taught by Lanchester in a Vee machine. Thus, ordinary gearing can be used to drive the balance shafts instead of the skew gearing taught by Lanchester in a Vee machine. When the angle between the two cylinders is 90 degrees, only two not four balance shafts are required. When the machine has four cylinders in a 90 degree Vee, only two parallel balance shafts are required to serve all four cylinders. For some applications, three balance shafts are used.
REFERENCES:
patent: 1163832 (1915-12-01), Lanchester
patent: 1898459 (1933-02-01), Newcomb
patent: 2974541 (1961-03-01), Dolza
patent: 3402707 (1968-09-01), Heron
patent: 3903995 (1975-09-01), Irgens
patent: 4290395 (1981-09-01), Sakano
patent: 4414934 (1983-11-01), Vogel
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