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Four cycle four cylinder in-line engine with rotors of a supercharging device used as balance shafts

  • US 6,439,188 B1
  • Filed: 07/19/2001
  • Issued: 08/27/2002
  • Est. Priority Date: 07/19/2001
  • Status: Expired due to Fees
First Claim
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1. An engine, comprising:

  • a crankshaft supported for rotation about a crankshaft axis;

    a plurality of pistons connected to said crankshaft, each of said plurality of pistons being disposed for reciprocating movement within an associated one of a plurality of cylinders of said engine;

    a first shaft supported for rotation about a first axis of rotation at a first rotational velocity in a first rotational direction, said first shaft having a first center of gravity which is radially displaced from said first axis of rotation by a first preselected amount;

    a second shaft supported for rotation about a second axis of rotation at a second rotational velocity in a second rotational direction, said second shaft having a second center of gravity which is radially displaced from said second axis of rotation by a second preselected amount, said first and second axes of rotation being generally parallel to said crankshaft axis, said first and second rotational directions being opposite to each other, said first and second rotational velocities each being generally equal to a preselected multiple of the rotational velocity of said crankshaft; and

    a housing structure attached to said engine, said first and second shafts being supported by said housing structure for rotation within said housing structure, said housing structure being removably attached to said engine, said housing structure containing a supercharging device.

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