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Variable gas intake method of motorcycle four-stroke internal combustion engine and variable gas intake mechanism

A technology of four-stroke internal combustion engine and air intake mechanism, which is applied in the direction of machine/engine, electrical control, mechanical equipment, etc., can solve the problems of low torque at low speed and high fuel consumption, and achieve high and medium-low speed torque, obvious changes, and improved combustion. Effect

Inactive Publication Date: 2003-10-08
TSINGHUA UNIV
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of low-speed torque and high fuel consumption in motorcycle internal combustion engines, and provide a variable intake method and a variable intake mechanism that not only improve the performance of the internal combustion engine at medium and low speeds but also ensure that the high-speed performance is not lost

Method used

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  • Variable gas intake method of motorcycle four-stroke internal combustion engine and variable gas intake mechanism
  • Variable gas intake method of motorcycle four-stroke internal combustion engine and variable gas intake mechanism
  • Variable gas intake method of motorcycle four-stroke internal combustion engine and variable gas intake mechanism

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing, illustrate the specific embodiment of the present invention.

[0016] Such as figure 1 with figure 2 As shown, there is a through hole near the intake valve 2 of the four-stroke gasoline internal combustion engine of the single-cylinder 150 type motorcycle, and a mast movable block 8 with a diameter of 10 mm is installed in the through hole, and one end of the mast movable block is fixed on the solenoid valve 7 , and the other end communicates with the cavity of the air inlet 3. The solenoid valve 7 is fixed on the cylinder head 1 of the internal combustion engine.

[0017] When the internal combustion engine is at idle speed or medium and low speed working conditions, the solenoid valve 7 is not energized, and the movable block 8 protrudes from the inner wall surface of the intake passage 3 by 7 millimeters to reduce the intake flow section near the intake valve of the internal combustion engine. The electronic contro...

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Abstract

A variable inlet method and its unit for motor four stroke diesel is disclosed in this invention. The air inlet flow sectino near the inlet is reduced when the diesel is at idle, or lower middle speeds and the inlet flow section near the inlet is recovered when it is st high speed. This invention provides a variable inlet unit including a magnetic valve or stepmotor fixed on piston covr, electronic control unit connected with the valve or stepmotor by wire or signal lines and loose piece driven by the valve or stepmotor.

Description

technical field [0001] The invention relates to a variable intake method and a variable intake mechanism for a four-stroke internal combustion engine, in particular to a variable intake method and a variable intake mechanism for a motorcycle spark ignition four-stroke internal combustion engine. Background technique [0002] Motorcycle internal combustion engine rotates at a high speed, in order to obtain greater power, the maximum torque is often corresponding to a higher rotation speed, so the engine has defects such as low torque at low and medium speeds, poor acceleration, and poor fuel economy. This kind of engine is better for racing cars, but Chinese users use motorcycles as a means of transportation, which requires better performance at medium and low speeds, and also hopes to have greater high-speed power. In order to take into account both high-speed performance and medium-low speed performance, variable intake technology has appeared on internal combustion engines...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/10
Inventor 裴普成
Owner TSINGHUA UNIV
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