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engine

A technology of engine and vibration center, which is applied in the direction of engine components, machines/engines, mechanical equipment, etc., and can solve problems such as difficulty in miniaturization of the engine, easy increase in the weight of the main body of the engine, and easy deterioration of fuel efficiency, etc.

Active Publication Date: 2017-04-12
MITSUBISHI MOTORS CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Therefore, the weight of the engine body tends to increase, fuel efficiency tends to deteriorate, and it is difficult to reduce the size of the engine

Method used

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Embodiment Construction

[0041] An engine as an embodiment will be described with reference to the drawings. In addition, the embodiment shown below is just an illustration, and it does not intend to exclude various deformation|transformation and technical application which are not expressly shown in the following embodiment. The respective configurations of the present embodiment can be modified and implemented in various ways without departing from the gist thereof, and can be selected or selected as necessary, or can be combined appropriately.

[0042] (1. Overall composition)

[0043] figure 1 It is an exploded perspective view for explaining the main mechanical elements from the crankshaft 1 to the piston 9 built in the engine 10 of this embodiment, figure 2 It is a plan view showing the state when the crankshaft 1 is seen from the cylinder side. Such as figure 1 , figure 2 As shown, the engine 10 is a tandem three-cylinder engine without a balancer shaft, and is installed in such a manner...

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Abstract

The present invention relates to an engine which improves the design freedom degree and the flexibility of a vehicle. The engine is equipped with a balancing weight (5) which provides an unbalance mass in relative to a rotation shaft (C) of a crank shaft (1). End portion weights (6a) and (7a) which provide an unbalance mass in relative to the rotation shaft (C) of the crank shaft (1) are respectively disposed on a crank shaft belt wheel (6) and a transmission board (7) at two ends of the crank shaft (1). The over balance rate (delta 2) of the end portion weights is set to be larger than the over balance rate of the balancing weight (5).

Description

technical field [0001] The present invention relates to an engine in which vibration is suppressed by using an unbalanced mass (ambarance mass) with respect to a rotating shaft of a crankshaft. Background technique [0002] Conventionally, there is known a technique for suppressing engine vibration by reducing the inertial force and moment of inertia generated during engine operation by using a counterweight. In general, in such technologies, mechanical elements included on the path of the power transmission system from the crankshaft to the piston are classified into reciprocating motion elements (vibration elements) and rotational motion elements (rotation elements). Analyze how each moving element affects engine vibration. Here, the former mass is called reciprocating mass, and the latter mass is called rotating mass. [0003] In the case of a single-cylinder engine, if the mass of the counterweight (unbalanced mass) is set to a value equivalent to the rotating mass, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B77/00
Inventor 土居照幸畑田国男竹田将之
Owner MITSUBISHI MOTORS CORP
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