1. A delivery pipe comprising:
an outer pipe;
an inner pipe; and
a noise emission decreasing device, wherein the outer pipe is connected to a plurality of fuel injectors of a multi-cylinder internal combustion engine,
the inner pipe being disposed in the outer pipe and having an open end through which an interior of the inner pipe communicates with atmosphere,
the noise emission decreasing device being adapted to act so as to decrease a noise emitted from the inner pipe.
2. A delivery pipe according to claim 1, wherein the noise emission decreasing device includes a mesh.
3. A delivery pipe according to claim 1, wherein the noise emission decreasing device includes a porous member.
4. A delivery pipe according to claim 1, wherein the noise emission decreasing device includes a vibration suppressing member provided to the inner pipe.
5. A delivery pipe according to claim 1, wherein the noise emission decreasing device includes an elastic tube fitted into the inner pipe.
6. A delivery pipe according to claim 1, wherein the noise emission decreasing device includes a wire harness inserted into the inner pipe.
7. A delivery pipe according to claim 1, wherein the noise emission decreasing device is provided at all portions of a cross section of an interior of the inner pipe.
8. A delivery pipe according to claim 1, wherein the noise emission decreasing device is provided at only a portion of a cross section of an interior of the inner pipe.
9. A delivery pipe according to claim 1, wherein the noise emission decreasing device is disposed at an entire circumference of an inside surface of the inner pipe.
10. A delivery pipe according to claim 1, wherein the noise emission decreasing device is disposed at only a portion of a circumference of an inside surface of the inner pipe.
11. A delivery pipe according to claim 1, wherein the noise emission decreasing device is disposed at only the open end of the inner pipe.
12. A delivery pipe according to claim 1, wherein the noise emission decreasing device is disposed at only a longitudinally intermediate portion of the inner pipe.
13. A delivery pipe according to claim 1, wherein the noise emission decreasing device is pressed into the inner pipe and is located inside the inner pipe.
14. A delivery pipe according to claim 1, wherein the noise emission decreasing device is bonded to an inner surface of the inner pipe and is located inside the inner pipe.
15. A delivery pipe according to claim 1, wherein the noise emission decreasing device includes a vibration damping sheet attached to an inner surface of the inner pipe.
16. A delivery pipe according to claim 1, wherein the noise emission decreasing device includes a vibration damping coating coated to an inner surface of the inner pipe.
17. A delivery pipe according to claim 1, wherein the inner pipe includes a main pipe and a branch pipe diverging from the main pipe and extending toward the fuel injector and the wire harness extends through the inner pipe to a respective fuel injector.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An information recording and reproducing head comprising:
a light source; and
a first scatterer for recording information on a recording medium by generating near-field light by irradiation of the recording medium with light from said light source and forming a magnetic domain array on the recording medium, wherein
a perimeter of said scatterer defines a plurality of vertices and a distance between a first vertex and a last vertex of said plurality of vertices is shorter than a recording track width on said recording medium, and the near-field light is generated at each of the plurality of vertices.
2. The information recording and reproducing head according to claim 1 wherein said plurality of vertices comprises first and second convex vertices wherein said distance is measured between said first and second vertices.
3. The information recording and reproducing head according to claim 1 wherein said plurality of vertices comprises first, second and third convex vertices wherein said distance is measured between said first and third vertices.
4. The information recording and reproducing head according to claim 1, further comprising a magnetic flux detecting element for detecting leakage flux from a surface of said recording medium.
5. The information recording and reproducing head according to claim 1 further comprising a second scatterer identical to said first scatterer wherein the vertices of said first and second scatterers are disposed in a face-to-face relationship.
6. The information recording and reproducing head according to claim 1, wherein a line tangent to each of said plurality of vertices is approximately perpendicular to a recording track direction.
7. The information recording and reproducing head according to claim 1, wherein said scatterer is formed of Au.
8. The information recording and reproducing head according to claim 1 further comprising a recording coil for generating a magnetic field in the vicinity of said plurality of vertices.
9. The information recording and reproducing head according to claim 2 wherein said perimeter defines a concave vertex disposed between said first and second convex vertices.
10. The information recording and reproducing head according to claim 3 wherein said perimeter defines a first concave vertex disposed between said first and second convex vertices and a second concave vertex disposed between said second and third convex vertices.
11. The information recording and reproducing head according to claim 5 wherein said first and second scatterers are formed of Au.
12. The information recording and reproducing apparatus according to claim 1 further comprising:
a slider on which said scatterer is disposed; and
a scanning mechanism for moving said slider in relation to said recording medium.
13. An information recording and reproducing apparatus comprising:
a light source;
a first scatterer for recording information on a recording medium by generating near-field light by irradiation of the recording medium with light from said light source and forming a magnetic domain array on the recording medium, wherein a perimeter of said scatterer defines a plurality of vertices and a distance between a first vertex and a last vertex of said plurality of vertices is shorter than a recording track width on said recording medium, and the near-field light is generated at each of the plurality of vertices;
a magnetic flux detecting element for detecting leakage flux from a surface of said recording medium;
an encoder for performing a first transformation of said information;
recording-signal processing means that drives said light source according to said first transformation and forms a magnetic domain array corresponding to said information on said recording medium; and
reproduced-signal processing means for restoring said information by performing an inverse transformation, which is inverse to said first transformation, on a signal from said magnetic-flux detecting means.
14. The information recording and reproducing apparatus according to claim 13, further comprising:
a slider on which said scatterer is disposed; and
a scanning mechanism for moving said slider in relation to said recording medium.
15. The information recording and reproducing head according to claim 13 wherein a line tangent to each of said plurality of vertices is approximately perpendicular to a recording track direction.
16. The information recording and reproducing head according to claim 13, further comprising;
a second scatterer identical to said first scatterer wherein the vertices of said first and second scatterers are disposed in a face-to-face relationship.