초록 ▼

A vehicle characterized by a deceleration that is readily adjustable in the course of braking control with a torque of a motor mounted on a vehicle. In one embodiment, the vehicle has a power system including an engine, a motor, a torque converter, a transmission, and an axle that are linked with on

A vehicle characterized by a deceleration that is readily adjustable in the course of braking control with a torque of a motor mounted on a vehicle. In one embodiment, the vehicle has a power system including an engine, a motor, a torque converter, a transmission, and an axle that are linked with one another in series. The transmission is a mechanism that changes over a gear ratio under control of a control unit to vary the transmitted torque. The driver manipulates a gearshift lever in the vehicle to specify a desired deceleration by power source braking. The control unit refers to a predetermined map and specifies a combination of motor torque and gear ratio to attain the specified deceleration. In the course of braking control, the deceleration is corrected according to a step-on amount of an accelerator pedal in a range of play of the accelerator pedal. This arrangement facilitates minute adjustment of the deceleration by the power source braking.

대표청구항 ▼

A vehicle characterized by a deceleration that is readily adjustable in the course of braking control with a torque of a motor mounted on a vehicle. In one embodiment, the vehicle has a power system including an engine, a motor, a torque converter, a transmission, and an axle that are linked with on

A vehicle characterized by a deceleration that is readily adjustable in the course of braking control with a torque of a motor mounted on a vehicle. In one embodiment, the vehicle has a power system including an engine, a motor, a torque converter, a transmission, and an axle that are linked with one another in series. The transmission is a mechanism that changes over a gear ratio under control of a control unit to vary the transmitted torque. The driver manipulates a gearshift lever in the vehicle to specify a desired deceleration by power source braking. The control unit refers to a predetermined map and specifies a combination of motor torque and gear ratio to attain the specified deceleration. In the course of braking control, the deceleration is corrected according to a step-on amount of an accelerator pedal in a range of play of the accelerator pedal. This arrangement facilitates minute adjustment of the deceleration by the power source braking. aid chamber at or below a specified pressure. 3. The core barrel assembly of claim 1, wherein said lower end of said at least one other inner tube section is directly attached to said upper end of said first inner tube section. 4. The core barrel assembly of claim 1, wherein a length of said chamber is greater than 30 feet. 5. The core barrel assembly of claim 1, wherein a length of said first inner tube section is at least 30 feet and a length of said at least one other inner tube section is at least 30 feet. 6. A core barrel assembly for sponge coring, comprising: an outer barrel assembly including a core bit disposed at a lower end thereof and an opposing upper end configured for attachment to a drill string: a first inner tube section having a lower end disposed proximate said core bit and an opposing upper end, at least a portion of an interior wall of said first inner tube section comprising a layer of sponge material adapted to absorb at least one specified reservoir fluid; at least one other inner tube section having a lower end secured to said upper end of said first inner tube section and an opposing upper end disposed proximate said upper end of said outer barrel assembly, at least a portion of an interior wall of said at least one other inner tube section comprising a layer of sponge material adapted to absorb said at least one specified reservoir fluid; a layer of webbing material disposed in said layer of sponge material in one of said first and said at least one other inner tube sections, said layer of webbing material extending longitudinally and circumferentially about a bore defined within said at least one of said first and said at least one other inner tube sections; a chamber for receiving a core sample bounded by said interior wall of said first inner tube section and said interior wall of said at least one other inner tube section and extending substantially from said lower end of said first inner tube section to said upper end of said at least one other inner tube section; and a breakable fluid seal mechanism providing a breakable fluid seal within said chamber between said first inner tube section and said at least one other inner tube section, comprising: a first sealing element secured to said upper end of said first inner tube section, said first sealing element including a sealing device configured to provide a breakable fluid seal between said sealing device and said interior wall of said first inner tube section; and a second sealing element secured to said lower end of said at least one other inner tube section, said second sealing element including a sealing device configured to provide a breakable fluid seal between said sealing device of said second sealing element and said interior wall of said at least one other inner tube section, said second sealing element attached to said first sealing element. 7. A core barrel assembly for sponge coring, comprising: an outer barrel assembly including a core bit disposed at a lower end thereof and an opposing upper end configured for attachment to a drill string; a first inner tube section having a lower end disposed proximate said core bit and an opposing upper end, at least a portion of an interior wall of said first inner tube section comprising a layer of sponge material adapted to absorb at least one specified reservoir fluid; at least one other inner tube section having a lower end secured to said upper end of said first inner tube section and an opposing upper end disposed proximate said upper end of said outer barrel assembly, at least a portion of an interior wall of said at least one other inner tube section comprising a layer of sponge material adapted to absorb said at least one specified reservoir fluid; a layer of webbing material disposed in said layer of sponge material in at least one of said first and said at least one other inner tube sections, said layer of webbing material extending longitudinally and circumferenti ally about a bore defined within said at least one of said first and said at least one other inner tube sections, wherein said layer of webbing material is disposed proximate an inner surface of said layer of sponge material; and a chamber for receiving a core sample bounded by said interior wall of said first inner tube section and said interior wall of said at least one other inner tube section and extending substantially from said lower end of said first inner tube section to said upper end of said at least one other inner tube section. 8. A core barrel assembly for use in sponge coring, comprising: an outer barrel assembly including a core bit secured to a lower end thereof and an opposing upper end configured for attachment to a drill string; an inner barrel assembly disposed within said outer barrel assembly and secured thereto, said outer barrel assembly configured to rotate freely relative to said inner barrel assembly, said inner barrel assembly extending to a lower end proximate said core bit from an opposing upper end, at least a portion of an interior wall of said inner barrel assembly comprising a layer of sponge material adapted to absorb at least one specified reservoir fluid; a piston configured to provide a fluid seal between an outer cylindrical surface of said piston and said interior wall of said inner barrel assembly; at least one laterally movable locking element associated with said piston, said at least one locking element configured to engage a cooperative structure of said interior wall of said inner barrel assembly when said at least one locking element is at a first position and to disengage said cooperative structure when said at least one locking element is at a second position; and a slidable piston rod associated with said piston, said piston rod located and configured to maintain said at least one locking element at said first position when said piston rod is at one position, said piston rod further configured for travel relative to said piston to another position where said at least one locking element is free to move to said second position. 9. The core barrel assembly of claim 18, further comprising a disk-shaped portion on one end of said piston rod, said disk-shaped portion having a substantially planar surface located and oriented for contacting a core traversing a throat of said core bit and entering said inner barrel assembly. 10. The core barrel assembly of claim 8, further comprising a fluid passageway configured to extend from a first end of said piston to a second opposing end of said piston when said piston rod is at said another position. 11. The core barrel assembly of claim 10, wherein said fluid passageway comprises a bore extending through said piston rod and at least one port extending through said piston rod substantially transverse to said bore of said piston rod and in fluid communication therewith. 12. The core barrel assembly of claim 11, further comprising: a disk-shaped portion on one end of said piston rod, said disk-shaped portion having a substantially planar-surface located and oriented for contacting, a core traversing a throat of said core bit and entering said inner barrel assembly; and at least one port extending through said disk-shaped portion substantially transverse to said bore of said piston rod and in fluid communication therewith. 13. The core barrel assembly of claim 8, further comprising an O-ring type seal configured to provide said fluid seal between said outer cylindrical surface of said piston and said interior wall of said inner barrel assembly. 14. A core barrel assembly for use in sponge coring having a pressure compensated inner barrel assembly, comprising: an outer barrel assembly including a core bit secured to a lower end thereof and an opposing upper end configured for attachment to a drill string; an inner barrel assembly disposed within said outer barrel assembly and secured thereto, said outer barrel assembly confi gured to rotate freely relative to said inner barrel assembly, said inner barrel assembly extending to a lower end proximate said core bit from an opposing upper end, at least a portion of an interior wall of said inner barrel assembly comprising a layer of sponge material adapted to absorb at least one specified reservoir fluid; a sealing mechanism disposed proximate said lower end of said inner barrel assembly configured to provide a fluid seal between said sealing mechanism and said interior wall of said inner barrel assembly; a pressure compensation mechanism disposed proximate said upper end of said inner barrel assembly and configured to provide a fluid seal between said pressure compensation mechanism and said interior wall of said inner barrel assembly, a region within said interior wall of said inner barrel assembly between said sealing mechanism and said pressure compensation mechanism forming a chamber; a pressure relief element disposed on said pressure compensation mechanism configured to maintain fluid contained within said chamber at or below a specified pressure; wherein said pressure compensation mechanism comprises a cylindrical housing having said pressure relief element disposed thereon, said cylindrical housing configured to provide a movable fluid seal between an outer surface of said cylindrical housing and said interior wall of said inner barrel assembly; and a thermal compensation mechanism coupled to said pressure compensation mechanism and configured to move said pressure compensation mechanism through said inner barrel assembly in response to a change in temperature to expand the volume of said chamber, wherein said thermal compensation mechanism comprises an adjusting sleeve slidably disposed in said inner barrel assembly, said adjusting sleeve having one end secured to said cylindrical housing of said pressure compensation mechanism and further including an opposing end configured to abut an end of said sponge liner disposed in said inner barrel assembly, said adjusting sleeve configured to move said cylindrical housing through said inner barrel assembly in response to thermal expansion of said sponge liner. 15. The core barrel assembly of claim 14, wherein said pressure relief element on said pressure compensation mechanism comprises a pressure relief valve configured to release a controlled volume of fluid from said chamber when fluid pressure within said chamber exceeds said specified pressure. 16. A core barrel assembly for use in sponge coring having a pressure compensated inner barrel assembly, comprising: an outer barrel assembly including a core bit secured to a lower end thereof and an opposing upper end configured for attachment to a drill string; an inner barrel assembly disposed within said outer barrel assembly and secured thereto, said outer barrel assembly configured to rotate freely relative to said inner barrel assembly, said inner barrel assembly extending to a lower end proximate said core bit from an opposing upper end, at least a portion of an interior wall of said inner barrel assembly comprising a layer of sponge material adapted to absorb at least one specified reservoir fluid; a sealing mechanism disposed proximate said lower end of said inner barrel assembly configured to provide a fluid seal between said sealing mechanism and said interior wall of said inner barrel assembly, wherein said sealing mechanism comprises: a piston configured to provide a fluid seal between an outer cylindrical surface of said piston and said interior wall of said inner barrel assembly; at least one laterally movable locking element associated with said piston, said at least one locking element configured to engage a cooperative structure of said interior wall of said inner barrel assembly when said at least one locking element is at a first position and to disengage said cooperative structure when said at least one locking element is at a second position; and a slidable piston r