Aspirator for internal combustion engines
A technology of air suction device and internal combustion engine, applied in the direction of internal combustion piston engine, combustion engine, mechanical equipment, etc., can solve the problems of crank noise and fuel consumption reduction, and achieve the effect of optimizing combustion efficiency, improving combustion efficiency, and optimizing air-fuel ratio.
Active Publication Date: 2016-09-07
HONDA MOTOR CO LTD
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Problems solved by technology
[0008] When the internal combustion engine is running under a medium load, if the tumble flow is too strong (the vortex intensity is high), the combustion is too fast, which is not conducive to the reduction of fuel consumption. In addition, the rapid combustion may sometimes cause crank noise
[0009] Therefore, during medium-load operation, it is desirable to suppress intake air through the upper passage of the intake passage. However, in the intake control by the intake control valve described in Patent Document 1, it is not possible to only Close the upstream opening of the upper passage to suppress the intake air through the upper passage
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Embodiment Construction
[0041] Refer below Figure 1 to Figure 11 One embodiment of the present invention will be described.
[0042] figure 1 It is an overall side view of a motorcycle 1 equipped with an internal combustion engine 10 having an air intake device according to the present embodiment.
[0043] The body frame 2 of the motorcycle 1 has a pair of left and right main frame pipes 2b extending rearward from a head pipe 2a. The pair of main frame pipes 2b respectively extend rearward and then bend downward to form inclined extensions 2ba. The lower portion (including the lower end portion) of the inclined extension portion 2ba is bent forward.
[0044] Also, a pair of left and right down frame tubes 2c extend obliquely downward from the head pipe 2a, and the down frame tubes 2c are substantially parallel to the obliquely extending portion 2ba of the main frame tube 2b when viewed from the side.
[0045] A pair of seat rails (seat brackets) 2d extend rearward from upper portions of the incli...
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In the air intake device of the internal combustion engine of the present invention, a throttle valve (22) and an air intake distribution valve (23) are provided in the air intake passage (P). The downstream side of the intake distribution valve (23) is divided into an upper intake passage (Up) and a lower intake passage (Lp) by a partition plate (60). The suction distribution valve (23) is pivotally supported near the upstream side edge of the partition plate (60), and extends to the upstream side. Through the swing of the suction distribution valve (23), the downstream side is adjusted and divided into upper and lower two parts. Partially, the ratio of the gas flowing in the upper suction passage (Up) and the lower suction passage (Lp). Therefore, it is possible to properly select the intake air volume allocated to the upper and lower passages according to the load state, thereby adjusting the swirl strength of the tumble flow to realize the optimization of combustion efficiency.
Description
technical field [0001] The present invention relates to an air intake device of an internal combustion engine mounted on a vehicle. Background technique [0002] In the prior art, there is an air intake device for an internal combustion engine, that is, when the internal combustion engine is running at a low load, the gas (inhaled gas) sucked into the combustion chamber is tumbled, and the fuel is stratified and delivered to the gas located in the combustion chamber. Around the upper spark plug, it can improve combustion efficiency and reduce fuel consumption. [0003] In the suction device, a suction valve port and an exhaust valve port are provided on the top wall of the cylinder head, and the suction valve port and the exhaust valve port are respectively connected to the suction channel and the exhaust channel, and the suction channel and the exhaust valve port are connected to each other. The two air passages bend and extend from the side of the suction valve port and t...
Claims
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IPC IPC(8): F02B31/00
CPCF02B31/08Y02T10/12Y02T10/40
Inventor田边和也久保田良
OwnerHONDA MOTOR CO LTD