WO2007135840A1 - 内燃機関の吸気装置 - Google Patents
内燃機関の吸気装置 Download PDFInfo
- Publication number
- WO2007135840A1 WO2007135840A1 PCT/JP2007/059136 JP2007059136W WO2007135840A1 WO 2007135840 A1 WO2007135840 A1 WO 2007135840A1 JP 2007059136 W JP2007059136 W JP 2007059136W WO 2007135840 A1 WO2007135840 A1 WO 2007135840A1
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- WO
- WIPO (PCT)
- Prior art keywords
- intake
- flow
- valve body
- open state
- valve
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
- F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
- F02B31/06—Movable means, e.g. butterfly valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1005—Details of the flap
- F02D9/1025—Details of the flap the rotation axis of the flap being off-set from the flap center axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1035—Details of the valve housing
- F02D9/104—Shaping of the flow path in the vicinity of the flap, e.g. having inserts in the housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/48—Tumble motion in gas movement in cylinder
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the present invention relates to an intake device that controls an intake flow flowing in an intake passage of an internal combustion engine.
- An intake device that controls the intake flow by arranging an intake control valve that forms a tamper flow (longitudinal vortex flow) or a spool flow (transverse vortex flow) in the intake passage that supplies intake air to the cylinder side of the internal combustion engine
- a suitable tamper flow swirl flow is formed in the cylinder, the combustion efficiency and output of the internal combustion engine can be improved.
- an intake control valve used in an intake device one that rotates a plate-like valve body about a valve shaft is known. By supporting the valve shaft at a predetermined position in the intake passage and rotating the valve body, it is possible to change the opening in the intake passage and form a desired tamper flow or swirl flow.
- Patent Document 1 proposes an intake device that employs a cantilever intake control valve.
- the cantilever intake control valve is a form in which a valve shaft is set on the end side of the valve body to rotate the valve body.
- a valve shaft is arranged near the inner wall of the intake passage to rotate a cantilever intake control valve.
- the intake control valve is fully closed in the low-rotation and low-load range, and is half-open in the low-rotation medium-load region, the medium-rotation medium-load region, and the medium-rotation low-load region.
- a valve drive means that is fully open. Therefore, the intake device of Patent Document 1 can control the intake flow in multiple stages by appropriately rotating the valve body around the valve shaft.
- Patent Document 1 Japanese Patent Laid-Open No. 7-1740 028
- the butterfly type intake control valve which is conventionally known as the butterfly type, has a valve body arranged substantially symmetrically with the valve shaft at the center. is there.
- the intake flow acts almost symmetrically on the left and right valve bodies around the valve shaft, which has the advantage that the holding torque can be reduced compared to a cantilever intake control valve.
- Such a butterfly-type intake control valve has been widely used as a throttle valve for adjusting the intake air amount.
- the butterfly intake control valve used as throttle pulp has a valve shaft set at the center of the intake passage. Therefore, when the valve body is turned to reduce the intake air amount, two (two) intake air flows are formed along the upper and lower (or left and right) inner walls.
- the intake control valve arranged to form the tumble flow or swirl flow described above it is necessary to draw the intake flow to one side in the intake passage when the half-open or closed state is formed. It is. This is because if multiple (two) flows are formed as in the case of a throttle valve, the intake flows interfere with each other and become weak. Therefore, it is difficult to form a tamper flow or a swirl flow with the conventional pattern-type intake control valve.
- An object of the present invention is to solve the above-described conventional problems, and to provide an intake device for an internal combustion engine that can form a vortex in a cylinder with a simple structure.
- the above object is to provide an intake device for an internal combustion engine in which a valve body that rotates around a valve shaft is arranged in the intake passage to adjust the intake air flow.
- the valve shaft is decentered from the center position of the valve body.
- the intake passage is supported at a position deviated from the center position of the intake passage, and when the valve body is rotated, a half-open state is formed from the fully closed state to the fully opened state. This can be achieved by an intake device for an internal combustion engine.
- a simple modification to a general butterfly-type intake control valve that is, a modification in which the position of the valve shaft provided in the valve body is decentered and the valve shaft is supported at a position deviated from the center position of the intake passage.
- valve body is disposed so as to incline downstream when the fully closed state is formed. In this way, the load acting on the valve body can be reduced.
- valve body has a notch portion at the tip portion for narrowing the flow path width of the intake air flow into the cylinder when the fully closed state is formed, and forming the half open state,
- a structure in which an intake air flow blocking structure is provided in the intake passage to block the intake flow from flowing downward through the notch when the valve body is reversed and contacts the inner wall of the intake passage. May be adopted. In this case, a stronger vortex can be formed in the cylinder.
- an actuator is connected to the valve shaft, and the state change of the valve body from the fully closed state to the half open state and the state change from the half open state to the fully open state are as follows: It is good also as a structure formed by reversely rotating. As a result, the actuator can be rotated forward and backward to form three states: fully closed, fully open, and half open [0 0 1 4]
- the intake flow blocking structure is formed on the upstream side of the valve shaft, and when the valve body forms the half-open state, the intake flow is blocked by the intake flow blocking structure.
- a structure that is inclined with respect to the flow direction of the intake air may be employed so as to guide the intake air flow from the shut-off side of the valve body to the open side of the valve body that allows passage of the intake air flow. .
- the intake flow that flows toward the shut-off side of the valve body can be smoothly flowed to the open side of the valve body, and pressure loss in the half-open state can be prevented.
- valve body restricts the intake flow so as to flow along the inner wall surface of the intake passage above the valve shaft in the fully closed state, and the intake air below the valve shaft in the half-open state.
- a structure that restricts the intake air flow so as to flow along the inner wall surface of the passage can be employed. This makes it possible to form a strong tumble flow in both the fully closed state and the half open state. it can.
- an intake device for an internal combustion engine that can form a vortex in a cylinder with a simple structure.
- FIG. 1 is a view showing an intake device according to Embodiment 1.
- FIG. 2 is a view showing the intake control valve of the intake device shown in Fig. 1 taken out, and Fig. 2 (B) shows the intake control valve and intake passage of the intake device shown in Fig. 1. Figure ⁇ , which was taken out and shown.
- FIG. 3 is a view showing the operation of the intake device of Embodiment 1, FIG. 3 ( ⁇ ) is a fully closed state, FIG. 3 ( ⁇ ) is a fully open state, and FIG. 3 (C) is a half open state. It is.
- FIG. 4 is a view showing an intake device according to Embodiment 2.
- FIG. 5 is a view showing the intake control valve of the embodiment 2.
- FIG. 5 ( ⁇ ) is a view showing the intake control valve taken out
- FIG. 5 ( ⁇ ) is a view showing that the intake control valve is in a fully closed state.
- Fig. 5 (C) is a diagram schematically showing the state of the problem pointed out.
- FIG. 6 is a view showing the operation of the intake device of the second embodiment.
- FIG. 6 ( ⁇ ) is a fully closed state
- FIG. 6 ( ⁇ ) is a fully open state
- FIG. 6 (C) is a half open state. It is.
- FIG. 7 is a diagram for explaining the shape of a valve body that can form a stronger tumble flow when a fully closed state is formed or when a half-open state is formed.
- FIG. 8 is a view showing a preferable dimensional ratio of a notch formed in the valve body.
- FIG. 9 is a view showing an intake device according to Embodiment 3.
- FIG. 9 ( ⁇ ) is a fully closed state
- FIG. 9 ( ⁇ ) is a fully open state
- FIG. 9 (C) is a half open state. is there.
- FIG. 10 is a view showing a modified example of the intake device according to Embodiment 3.
- FIG. 10 ( ⁇ ) is a fully closed state
- FIG. 10 ( ⁇ ) is a fully open state
- FIG. 10 (C) is a half open state.
- FIG. 10 ( ⁇ ) is a fully closed state
- FIG. 10 ( ⁇ ) is a fully open state
- FIG. 10 (C) is a half open state.
- Fig. 11 is a view showing an intake device according to Embodiment 4, in which Fig. 11 ( ⁇ ) shows a fully closed state, Fig. 11 ( ⁇ ) shows a fully open state, and Fig. 11 (C) shows a half-open state. It is.
- FIG. 12 is a graph showing the relationship between the flow rate and the strength of the tamper flow.
- FIG. 1 is a view showing an intake device 1 according to the first embodiment.
- the intake device 1 is disposed at a portion connecting the cylinder side of the internal combustion engine and the intake manifold.
- the end portion 2 is the end portion on the cylinder side of the intake device 1, and the detailed illustration of the end portion on the opposite side, which is the interior two-fold side, is omitted.
- the intake flow GS flows from the intake manifold side toward the cylinder as shown in the figure.
- the intake passage may be an intake port formed in the cylinder head of the internal combustion engine, but this is not necessary. That is, the intake passage of the present invention may be a part of the intake manifold or a form existing as an independent intake pipe. The embodiment described below will be described without particularly limiting the intake passage.
- the intake device 1 will be described as an intake device in the case of forming a tamper flow (longitudinal vortex flow) TA.
- the intake device 1 has a hollow intake passage 3 through which an intake flow GS flows.
- An intake control valve 10 is disposed in the intake passage 3.
- the intake control valve 10 is desirably set at a position where the position of the intake control valve 10 and the inner wall 3a downstream thereof are linear. If the inner wall 3 a downstream of the intake control valve 10 is a flat straight line, the intake flow G S can be prevented from being disturbed and flow into the cylinder side, so that a stronger tamper flow TA can be formed.
- the intake control valve 10 is formed by a plate-shaped valve body 11 and a valve shaft 12 as in the conventional case.
- the valve body 11 is formed of a flat plate member, and its outer shape is formed in a circular shape, an elliptical shape, a rectangular shape, or the like according to the shape in the intake passage 3.
- the valve body 11 is preferably formed larger than the passage area (cross-sectional area perpendicular to the intake air flow GS). That is, it is preferable to form the valve body 11 so as to be inclined when the inside of the intake passage 3 is closed by the valve body 11.
- FIG. 1 illustrates a fully closed state in which the inside of the intake passage 3 is closed by the valve body 11.
- the full closed state is a state in which the strongest tumble flow TA is formed by vigorously flowing the intake flow GS, which has the smallest passage area and the flow rate increased to increase pressure.
- the fully closed state does not mean that the intake passage 3 is completely closed to stop the intake flow GS, but the intake passage 3 is most restricted by the valve body 11.
- valve body 11 is rotated around the valve shaft 12.
- the shaft portion protruding outward from the side portion of the valve body 11 is the valve shaft 12.
- the valve shaft 12 may be formed integrally with the valve body 11 or may be formed separately.
- a concave portion is formed on the side wall surface of the valve body 11, and a cylindrical shaft member serving as the valve shaft 12 may be fitted and fixed in the concave portion.
- the valve shaft 12 is pivotally supported by a bearing 15 provided on the intake passage 3 side, and is set to rotate around the bearing 15. Then, the rotational force from the actuator 16 is transmitted to the valve shaft 12.
- the direction of the actuator 16 and the amount of drive are controlled by an electronic control unit (ECU) 17.
- ECU electronice control unit
- This E C U 17 may also be used as E C U for controlling an internal combustion engine (not shown).
- the intake control valve 10 can be rotated to a desired position by controlling the actuator 16 according to the state of the internal combustion engine.
- the intake control valve 10 has a structure similar to that of a conventional butterfly type intake control valve. However, the intake control valve 10 is different from the conventional butterfly-type intake control valve in the position of the valve shaft 12 with respect to the valve body 11 and the position of the valve shaft 12 with respect to the intake passage 3. This point will be further described with reference to FIG.
- FIG. 2 (A) is a view showing the intake control valve 10 extracted from the intake device 1 shown in FIG. 1, and FIG. 2 (B) is an illustration showing the intake control valve 10 and intake passage 3 taken out. It is a figure.
- FIG. 2A a front view of the intake control valve 10 (viewed in the downstream direction) is illustrated on the right side.
- the valve body 11 is shown as a rectangular shape.
- the intake control valve 10 has a valve shaft 12 disposed at a position eccentric from the center position CL of the valve body 11 by a length S 1. Therefore, the upper side of the valve shaft 1 2 is the long side 1 1 PA of the length d 1 and the lower side of the valve shaft 1 2 is the short side of the length d 2 1 1 PB. .
- the valve shaft 12 is rotatably supported at a position PL eccentric from the center position HL of the intake passage 3 by a length S2.
- the valve shaft is set at the center of the intake passage, and the valve body is formed vertically symmetrical (or left-right symmetrical) with the valve shaft as the center, so the intake flow is on one side. It was difficult to form a tumble flow.
- the intake control valve 10 solves this point.
- the intake control valve 10 of the present embodiment is formed so as to satisfy the following two conditions. First (1) The valve shaft 12 is in an eccentric position from the central position CL of the valve body 11. Next, (2) For the intake passage 3, the valve shaft 12 is supported in an eccentric position from the central position HL. ing.
- a tumble flow can be formed by using an intake control valve whose basic structure is a butterfly type.
- the intake device 1 of the present embodiment can form a half-open state from the fully closed state through the fully open state by rotating the valve body 11. That is, a fully open state and a half open state are formed before and after the fully open state.
- a conventional general intake device has a half-open state between a fully-closed state and a fully-open state (see FIG.
- the intake device 1 of this embodiment can be shifted directly from the fully open state to the fully closed state. Even if only one of the two conditions (1) and (2) is executed, the three states of the fully closed state, the fully open state, and the half open state cannot be formed.
- FIG. 3 (A), (B), and (C) are diagrams showing the operation of the intake device 1.
- FIG. 3 (A) is a fully closed state
- FIG. 3 (B) is a fully open state
- FIG. ) Indicates a half-open state.
- Figure 3 (A) corresponds to Figure 1.
- the short side 11 P B side of the valve body 11 is in contact with (or very close to) the inner wall 3 a of the intake passage 3 and the intake flow is blocked.
- a space SP is formed at the tip on the long side 11 PA side, so that a strong tamper flow can be formed.
- the inner wall 3a at the position where the short side 11PB abuts may be flat.
- a half-open state shown in FIG. 3C can be formed.
- the long side I I P A is in contact with (or very close to) the inner wall 3 a of the intake passage 3.
- the short side 11 PB side protrudes to regulate the intake flow GS, but unlike the case of the long side IIPA shown in Fig. 3 (A), the space between the tip of the short side 11 PB and the inner wall 3 a Can grow to a moderate tamper flow.
- the inner wall 3 a at the position where the long side 11 PA contacts may be flat.
- the valve body 11 receives the greatest pressure from the intake flow GS when the fully closed state is formed. Therefore, it is preferable to reduce the load acting on the valve body 11 in the fully closed state.
- the valve body 11 is disposed in consideration of such a viewpoint. Comparing Fig. 3 (A) and Fig. 3 (C), when the fully closed state of Fig. 3 (A) is formed, the long side IIPA side of the valve body 1 1 is in a state where the intake flow GS is regulated at its end. Inclined to the downstream side, and when forming the half-open state of FIG. 3 (C), the short side of the valve body 11 1 is inclined toward the upstream side with the PB side regulating the intake air GS at its end. Yes.
- the intake flow GS In the fully closed state that receives the greatest pressure from the intake flow GS, if the long side of the valve body 1 1 is inclined toward the downstream side along the flow of the intake flow GS, the intake flow GS is reduced. It can be guided along the surface of the valve body 11 and flow downstream through the space SP. Therefore, the load acting on the valve element 11 when the fully closed state is formed can be reduced.
- the intake device 1 since the intake device 1 according to the first embodiment described above includes the novel intake control valve 10 based on the butterfly-type intake control valve, the intake device 1 can be moved from the fully closed state only by rotating the valve body 11. A half-open state can be formed through the fully open state. Therefore, it is possible to improve the combustion efficiency and output of the internal combustion engine by forming a desired tumble flow.
- the intake control valve 10 can be realized with a simple structure in which the position of the valve shaft 12 provided in the valve body 11 is eccentric and the valve shaft 12 is also eccentric from the center with respect to the intake passage 3. Therefore, the intake device 1 can be easily manufactured without increasing the cost.
- the intake control valve 10 is basically a butterfly so The holding torque can be reduced compared to the holding type. Therefore, the size of the actuator 16 can be reduced.
- FIG. 4 is a view illustrating the intake device 20 according to the second embodiment.
- FIG. 4 shows an intake device 20 similar to the intake device 1 of FIG.
- the same parts as those of the intake device 1 of the first embodiment are denoted by the same reference numerals, and redundant description is omitted.
- the intake control valve 30 of the intake device 20 also has the valve shaft 3 2 set at a position eccentric from the center position of the valve body 31.
- the valve shaft 3 2 is supported at a position eccentric from the center position of the intake passage 3. ing . Therefore, in the case of the intake control valve 30 as well, the upper side from the valve shaft 3 2 is the long side 3 1 P A and the lower side is the short side 3 1 P B.
- FIG. 5 (A), (B), and (C) are views showing the intake control valve 30.
- FIG. 5 (A) is a view showing the intake control valve 30 in a protruding state.
- FIG. 5 (B) FIG. 5 is a top view schematically showing when the intake control valve 30 is in a fully closed state.
- valve body 31 of the intake control valve 30 is provided with the notch 33 is different from the intake control valve 10 of the first embodiment described above.
- a substantially rectangular cutout 33 is formed at the distal end of the valve body 31 on the long side 3 1 PA side.
- WT width through which the intake flow GS passes
- the fully closed state see Fig. 4
- the intake device 20 of the second embodiment can further improve the combustion efficiency and output of the internal combustion engine by forming a stronger tamper flow compared to the intake device 1 of the first embodiment. Therefore, when the exhaust emission is likely to be bad, such as when the internal combustion engine is cold-coordinated, a stronger tamper flow can be formed to improve fuel consumption and emissions.
- the valve body 3 1 is the part that rises squarely on both sides as shown in Fig. 5 (A). (Hereafter, corner 3 4 R, 34 L). Therefore, when the valve body 31 is inverted to form a half-open state, the corner portions 34R and 34L abut against the inner wall 3a.
- the notch 33 acts as a gap, and therefore the intake air flows downstream through the notch 33.
- Fig. 5 (C) schematically shows the state of the problem pointed out here as a comparative example. In FIG. 5C, the notch 33 is hatched so that it can be easily confirmed.
- the intake device 20 of the second embodiment is provided with an intake flow blocking structure that blocks the intake flow from flowing downstream through the notch 33 when the half-open state is formed.
- the intake flow blocking structure is realized, for example, by providing grooves on the inner wall 3a of the intake passage 3 for storing the corner portions 34R and 34L when the valve body 31 is rotated to form a half-open state. More specific explanation will be given with reference to Fig. 5 (B).
- FIG. 5 (B) is a top view when the valve body 31 is in a half-open state.
- concave groove portions 35R and 35L are formed at locations where the corner portions 34R and 34L abut.
- These groove portions 35R and 35L are set with a width and a sufficient depth that can accommodate at least the corner portions 34R and 34L.
- the depths of the groove portions 35R and 35L are set so that the notch straight II portion 33CA existing between the corner portions 34R and 34L contacts the surface of the inner wall 3a.
- FIG. 6 (A), (B), and (C) are diagrams showing the operation of the intake device 20, FIG. 6 (A) is a fully closed state corresponding to FIG. 4, and FIG. 6 (B) is a fully open state.
- Figure 6 (C) shows the half-open state.
- the right side of each figure shows the posture of the valve body 31 when viewed in the downstream direction.
- the intake device 20 includes the notch 33 at the tip of the long side 3 1 PA. Therefore, when the fully closed state shown in FIG. A stronger tumble flow than that of 1 intake device 1 can be formed.
- the corners 3 4 R and 3 4 L are accommodated in the grooves 3 5 R and 3 5 L provided on the inner wall of the intake passage 3, so that the half-open state is the same as in the first embodiment. A state can also be formed.
- FIG. 7 is a diagram for explaining the shape of the valve body that can form a stronger tamper flow when the fully closed state is formed or when the half open state is formed.
- FIG. 7 shows a concave shape having a notch at the tip corresponding to the valve body 31 of Example 2 on the left side, and a flat shape corresponding to the valve body 11 of Example 1 on the right side. It is.
- the flow path areas SQ through which the intake air flows are set to be the same.
- the graph shown in the middle row summarizes the changes in the fully opened tamper when the notch width ratio (A / B) shown in the lower row is changed. This graph shows the half-open tamping This is also shown.
- the tamper strength display for the fully open position is shown on the left, with the solid line SL.
- the tamper strength display for half-opening is shown on the right side by the dashed line BL.
- a stronger tamper flow can be formed by forming a notch at the tip of the valve body. If the length of A in the notch is relatively long and exceeds 80%, that is, a shape close to the flat shape on the right in the upper part of FIG. Therefore, it can be understood from FIG. 7 that a stronger tamper can be formed by the valve body 31 having the notch 33 of the second embodiment. However, if the length of A is less than 50%, a narrow notch is formed and the tumble flow gradually weakens. Therefore, the width ratio (A / B) is preferably 50 to 70%.
- the conditions for forming a strong tumble flow when the half-open state is formed will be confirmed.
- the result is shown by the tamper strength display on the right side and the broken line BL.
- the end portion of the valve body is preferably flat when the half-open state is formed.
- the valve body 31 of Example 2 described above includes the notch 33 formed at the tip of the long side 31 PA, and the end on the short side 31 P B side has a flat shape. Therefore, it can be understood that the valve body 31 has an optimal shape.
- FIG. 8 is a view showing a preferable dimensional ratio of the notch formed in the valve body.
- WL: DL 15: 1 ⁇ 5: When set to 1, a stronger tamper can be formed.
- valve shaft 12 By simply rotating the valve shaft 12 around the axis of the intake passage 3 by 90 degrees, it can be changed to an intake device that forms a scale flow (lateral vortex flow).
- FIGS. 9A, 9B, and 9C are views showing the intake device 40 according to the third embodiment.
- FIGS. 9 (A), (B), and (C) the same parts as those of the intake device 20 of the second embodiment are denoted by the same reference numerals, thereby overlapping. The explanation to be omitted will be omitted.
- FIG. 9 (A), (B), and (C) show the operation of the intake device 40.
- FIG. 9 (A) is a fully closed state
- FIG. 9 (B) is a fully open state
- FIG. 9 (C ) Indicates a half-open state.
- the right side of each figure shows the posture of the valve body 51 when viewed in the downstream direction.
- the intake control valve 50 of the intake device 40 also has the valve shaft 52 set at a position eccentric from the center position of the valve body 51, and the valve shaft 52 is supported at a position eccentric from the center position of the intake passage 3. Therefore, in the case of the intake control valve 50, the upper side from the valve shaft 52 is the long side 51 PA, and the lower side is the short side 51 PB.
- the valve body 51 rotates in the clockwise direction from the fully closed state shown in FIG. 9 (A) to form the fully open state shown in FIG. 9 (B), and further rotates in the clockwise direction from the fully open state. As a result, the half-open state shown in Fig. 9 (C) is formed.
- the inner wall 3a of the intake device 40 is located on the upstream side of the position where the valve shaft 52 is disposed, where the corners 54R and 54L abut when the valve body 51 forms a half-open state.
- a contact surface 55 is formed.
- the contact surface 55 is formed so as to be substantially parallel to the valve body 51 forming the half-open state.
- the contact surface 55 functions as an intake flow blocking structure that blocks the intake flow from flowing downstream through the notch 53 when the valve body 51 is in a half-open state.
- the valve body 51 in the half-open state, has a long side 51 where the intake flow is blocked by the contact surface 55 so as to follow the flow of the intake flow GS. Inclined with respect to the flow direction of the intake flow GS so that the tip of the short side 51 PB that allows passage of the intake flow GS faces downstream.
- the valve body 51 can form a half-open state in such a state, unlike the intake device 20 according to the second embodiment.
- the intake flow blocking structure is an inner wall 3 positioned upstream of the valve shaft 52 3. This is because it is formed in a.
- the contact surface 55 is gently inclined with respect to the inclination angle of the inner wall 3 a upstream and downstream of the contact surface 55. Therefore, when the valve body 51 is fully opened, the intake flow GS flows also on the inner wall 3a side, and the oil or water accumulated on the contact surface 55 can flow downstream.
- the intake device 40 can be provided with a stagger for maintaining the valve body 51 in each state in the fully closed state and the half open state. Therefore, variation in the angular position of the valve body 51 in the fully open state and the half open state can be suppressed, so that fluctuations in the strength of the tamper flow in the fully closed state and the half open state can also be suppressed. Thereby, the dispersion
- FIGS. 10A, 10B, and 10C are views showing a modified example of the intake device according to the third embodiment.
- Fig. 10 (A) shows the fully closed state
- Fig. 10 (B) shows the fully open state
- Fig. 10 (C) shows the half open state.
- the valve body 51a has a flat shape with no notch formed at the tip of the long side 51PA. Further, the intake flow blocking structure described above is not adopted for the inner wall 3a. Since the shape of the tip of the long side 51 PA is flat, even if the half-open state shown in Fig. 10 (C) is formed, air is sucked from the gap between the tip of the long side 51 PA and the inner wall 3a. This is because the flow is suppressed from leaking.
- the intake flow rate in the fully open state can be increased.
- FIG. 11 (A), (B), and (C) are views showing an intake device 60 according to the fourth embodiment.
- 11 (A), (B), and (C) show the intake device 60 as in the intake device 1 of FIG. 1 of the first embodiment.
- FIG. 11 (A;), (B), and (C) the same parts as those of the intake device 1 of the first embodiment are denoted by the same reference numerals, and redundant description is omitted.
- Fig. 11 (A) shows the fully closed state
- Fig. 11 (B) shows the fully open state
- Fig. 11 (C) shows the half open state. Note that the right side of each figure shows the posture of the valve body 51 when viewed in the downstream direction. [0 0 6 5]
- valve body 7 1 according to the fourth embodiment is different from the first 1 according to the first embodiment, and the valve shaft 7 2 is eccentric to the inner wall 3 b side from the center position HL. It is supported so that it can rotate freely.
- the tip of the long side 7 1 PA is not formed with a notch, but is formed flat.
- Fig. 11 (A) when the valve element 71 is in the fully closed state, the short side 7 1 The tip of the PB faces the inner wall 3 b side, and the tip of the long side 7 1 PA The abutting against the inner wall 3 a below the valve shaft 7 2.
- the fully open state is formed by turning the valve element 71 counterclockwise from the fully closed state, and the half open state is formed by further turning counterclockwise.
- Fig. 11 (C) when the valve body 7 1 is in the half-open state, the tip of the long side 7 1 PA abuts against the inner wall 3 b above the valve shaft 7 2, Side 7 1 The tip of PB faces the inner wall 3a. Therefore, the valve body 71 restricts the intake flow so as to flow along the upper inner wall 3 b in the fully closed state, and restricts the intake flow so as to flow along the lower inner wall 3 a in the half-open state.
- Figure 1.2 is a graph that shows the flow rate on the vertical axis and the strength of the tamper flow on the horizontal axis.
- the relationship between the flow rate when the intake flow is made to flow along the upper inner wall 3 b and the strength of the tamper flow is shown by a broken line, and the intake flow along the lower inner wall 3 a.
- the solid line shows the relationship between the flow rate and the strength of the tumble flow.
- the intake flow flows along the inner wall 3b is referred to as upstream
- the case where the intake flow flows along the inner wall 3a is referred to as downstream.
- the intake device 60 according to the fourth embodiment can form a stronger tamper flow in both the fully closed state and the half open state. Therefore, even in the half-open state, a strong tamper flow can be generated, and the fuel efficiency at the time of partial opening is improved.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2007800189280A CN101454553B (zh) | 2006-05-24 | 2007-04-20 | 内燃机的进气装置 |
JP2008516587A JP4840445B2 (ja) | 2006-05-24 | 2007-04-20 | 内燃機関の吸気装置 |
EP07742571A EP2031209B1 (en) | 2006-05-24 | 2007-04-20 | Air intake device for internal combustion engine |
US12/227,295 US7958863B2 (en) | 2006-05-24 | 2007-04-20 | Intake device for internal combustion engine |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006144445 | 2006-05-24 | ||
JP2006-144445 | 2006-05-24 | ||
JP2006-304536 | 2006-11-09 | ||
JP2006304536 | 2006-11-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007135840A1 true WO2007135840A1 (ja) | 2007-11-29 |
Family
ID=38723152
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/059136 WO2007135840A1 (ja) | 2006-05-24 | 2007-04-20 | 内燃機関の吸気装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7958863B2 (ja) |
EP (1) | EP2031209B1 (ja) |
JP (1) | JP4840445B2 (ja) |
CN (1) | CN101454553B (ja) |
WO (1) | WO2007135840A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012207611A (ja) * | 2011-03-30 | 2012-10-25 | Honda Motor Co Ltd | 内燃機関 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5075103B2 (ja) * | 2008-12-11 | 2012-11-14 | トヨタ自動車株式会社 | 内燃機関の吸気装置 |
JP2011106405A (ja) * | 2009-11-19 | 2011-06-02 | Aisin Seiki Co Ltd | 内燃機関用吸気装置 |
JP2012180798A (ja) * | 2011-03-02 | 2012-09-20 | Honda Motor Co Ltd | 車両の吸気装置 |
JP5440806B2 (ja) | 2011-04-05 | 2014-03-12 | 株式会社デンソー | 吸気装置 |
JP5867322B2 (ja) * | 2012-07-04 | 2016-02-24 | アイシン精機株式会社 | 気流制御装置 |
JP6327180B2 (ja) * | 2015-03-12 | 2018-05-23 | トヨタ自動車株式会社 | 内燃機関 |
JP6354724B2 (ja) * | 2015-10-02 | 2018-07-11 | 株式会社デンソー | 吸気制御装置 |
CN105508030A (zh) * | 2015-12-31 | 2016-04-20 | 上海交通大学 | 机械式管道缩口调节装置 |
CN105626234A (zh) * | 2015-12-31 | 2016-06-01 | 上海交通大学 | 弹簧辅助式管道缩口调节装置 |
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JPS63128239U (ja) * | 1987-02-17 | 1988-08-22 | ||
JPH07174028A (ja) | 1993-12-21 | 1995-07-11 | Nissan Motor Co Ltd | 内燃機関の吸気装置 |
JPH09280066A (ja) * | 1996-04-17 | 1997-10-28 | Toyota Motor Corp | 内燃機関の吸気制御装置 |
JP2002309946A (ja) * | 2001-04-11 | 2002-10-23 | Toyota Motor Corp | 内燃機関の吸気装置 |
JP2003106158A (ja) * | 2001-09-28 | 2003-04-09 | Toyota Motor Corp | 筒内噴射式火花点火内燃機関 |
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JPS63128239A (ja) * | 1986-11-19 | 1988-05-31 | Hitachi Ltd | マイクロ光弾性測定装置 |
JPH02126035A (ja) | 1988-11-02 | 1990-05-15 | Mitsubishi Electric Corp | 多室形空気調和装置 |
JP3166546B2 (ja) * | 1994-08-17 | 2001-05-14 | トヨタ自動車株式会社 | 内燃機関 |
DE19854461C1 (de) * | 1998-11-25 | 2000-03-09 | Daimler Chrysler Ag | Verbrennungsmotor, insbesondere Verbrennungsmotor für Fahrzeuge, mit einer Abgasrückführung |
DE10133942A1 (de) * | 2000-07-14 | 2002-01-24 | Schatz Thermo Engineering | Verfahren zur Steuerung der Brennluftzufuhr eines Verbrennungsmotors und Zusatzventilanordnung zur Durchführung des Verfahrens |
JP4045915B2 (ja) * | 2002-10-03 | 2008-02-13 | 日産自動車株式会社 | 内燃機関の吸気装置 |
JP2005140050A (ja) | 2003-11-07 | 2005-06-02 | Aisin Seiki Co Ltd | 可変吸気装置 |
JP2005171813A (ja) | 2003-12-09 | 2005-06-30 | Nissan Motor Co Ltd | 内燃機関の吸気装置 |
JP2005320957A (ja) * | 2004-04-08 | 2005-11-17 | Denso Corp | 内燃機関用吸気絞り装置 |
-
2007
- 2007-04-20 US US12/227,295 patent/US7958863B2/en not_active Expired - Fee Related
- 2007-04-20 CN CN2007800189280A patent/CN101454553B/zh not_active Expired - Fee Related
- 2007-04-20 JP JP2008516587A patent/JP4840445B2/ja not_active Expired - Fee Related
- 2007-04-20 WO PCT/JP2007/059136 patent/WO2007135840A1/ja active Application Filing
- 2007-04-20 EP EP07742571A patent/EP2031209B1/en not_active Expired - Fee Related
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JPS63128239U (ja) * | 1987-02-17 | 1988-08-22 | ||
JPH07174028A (ja) | 1993-12-21 | 1995-07-11 | Nissan Motor Co Ltd | 内燃機関の吸気装置 |
JPH09280066A (ja) * | 1996-04-17 | 1997-10-28 | Toyota Motor Corp | 内燃機関の吸気制御装置 |
JP2002309946A (ja) * | 2001-04-11 | 2002-10-23 | Toyota Motor Corp | 内燃機関の吸気装置 |
JP2003106158A (ja) * | 2001-09-28 | 2003-04-09 | Toyota Motor Corp | 筒内噴射式火花点火内燃機関 |
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JP2012207611A (ja) * | 2011-03-30 | 2012-10-25 | Honda Motor Co Ltd | 内燃機関 |
Also Published As
Publication number | Publication date |
---|---|
EP2031209B1 (en) | 2011-07-27 |
US20090229557A1 (en) | 2009-09-17 |
CN101454553B (zh) | 2010-12-01 |
JP4840445B2 (ja) | 2011-12-21 |
EP2031209A1 (en) | 2009-03-04 |
EP2031209A4 (en) | 2010-03-31 |
US7958863B2 (en) | 2011-06-14 |
CN101454553A (zh) | 2009-06-10 |
JPWO2007135840A1 (ja) | 2009-10-01 |
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