Structure of engine

Patent metadata

Field	Value
Publication number	US-9291236-B2
Application number	US-201314098487-A
Country	US
Kind code	B2
Filing date	Dec 5, 2013
Priority date	Feb 25, 2013
Publication date	Mar 22, 2016
Grant date	Mar 22, 2016

Abstract

A structure of an engine includes: a crankshaft module configured to convert reciprocal motion of a piston into rotational motion; and a first balance shaft module and a second balance shaft module configured to reduce vibration of the engine, in which the first balance shaft module is directly gear-meshed with the crankshaft module, and the second balance shaft module is gear-meshed with the crankshaft module through an intermediate gear.

First claim

What is claimed is:

1. A structure of an engine, comprising:
a crankshaft module to convert reciprocal motion of a piston into rotational motion; and
a first balance shaft module and a second balance shaft module to reduce vibration of the engine;
wherein the first balance shaft module is directly gear-meshed with the crankshaft module; and
wherein the second balance shaft module is gear-meshed with the crankshaft module through an intermediate gear, which is gear-meshed with crankshaft module,
wherein a central axis of the crankshaft module is spaced from a cylinder central axis of the engine at a predetermined distance in a central axis direction of the first balance shaft module,
wherein a central axis of the first balance shaft module and a central axis of the second balance shaft module are symmetrically disposed to each other with respect to a cylinder central axis of the engine, and
wherein a central axis of the first balance shaft module and a central axis of the second balance shaft module are disposed at a same height with respect to the cylinder.

2. The structure of claim 1 , wherein:
an axis, which passes through a central axis of the first balance shaft module and a central axis of the second balance shaft module, is disposed above a central axis of the crankshaft module and apart from the central axis of the crankshaft module at a predetermined distance.

3. The structure of claim 1 , wherein:
a central axis of the crankshaft module is spaced from a cylinder central axis of the engine at a predetermined distance;
a central axis of the first balance shaft module and a central axis of the second balance shaft module are symmetrically disposed to each other with respect to the cylinder central axis of the engine;
the central axis of the first balance shaft module and the central axis of the second balance shaft module are disposed at the same height with respect to the cylinder; and
the central axis of the first balance shaft module is spaced from the central axis of the second balance shaft module at a predetermined distance.

4. The structure of claim 3 , wherein:
the first balance shaft module and the second balance shaft module pump oil.

5. A structure of an engine, comprising:
a crankshaft module to convert reciprocal motion of a piston into rotational motion;
a first balance shaft module and a second balance shaft module to reduce vibration of the engine; and
a fuel injection pump module to supply fuel at high pressure;
wherein the first balance shaft module is directly gear-meshed with the crankshaft module;
wherein the second balance shaft module is gear-meshed with the crankshaft module through an intermediate gear, which is gear-meshed with crankshaft module; and
wherein the fuel injection pump module is gear-meshed with the crankshaft module through the intermediate gear,
wherein a central axis of the crankshaft module is spaced from a cylinder central axis of the engine at a predetermined distance in a central axis direction of the first balance shaft module,
wherein a central axis of the first balance shaft module and a central axis of the second balance shaft module are symmetrically disposed to each other with respect to a cylinder central axis of the engine, and
wherein a central axis of the first balance shaft module and a central axis of the second balance shaft module are disposed at the same height with respect to the cylinder.

6. The structure of claim 5 , wherein:
an axis, which passes through a central axis of the first balance shaft module and a central axis of the second balance shaft module, is disposed above a central axis of the crankshaft module spaced from the central axis of the crankshaft module at a predetermined distance.

7. The structure of claim 5 , wherein:
a central axis of the crankshaft module is spaced from a cylinder central axis of the engine at a predetermined distance;
a central axis of the first balance shaft module and a central axis of the second balance shaft module are symmetrically disposed to each other with respect to the cylinder central axis of the engine;
the central axis of the first balance shaft module and the central axis of the second balance shaft module are disposed at the same height with respect to the cylinder; and
the central axis of the first balance shaft module is spaced from the central axis of the second balance shaft module at a predetermined distance.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Yun Jeyong
• Kim Sung Kwang
• Lee Ahn

Classifications

• F16F15/264 Primary

  Rotating balancer shafts (F16F15/262 takes precedence) · CPC title

• F02M39/02 Primary

  Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives · CPC title

• F16C3/20

  Shape of crankshafts or eccentric-shafts having regard to balancing · CPC title

• F02B75/06 Primary

  Engines with means for equalising torque · CPC title

• F16F15/26

  of crankshaft systems using solid masses, other than the ordinary pistons, moving with the system {, i.e. masses connected through a kinematic mechanism or gear system (F16F15/226 takes precedence)} · CPC title