Abstract: The invention relates to a method of making a grinding disk, comprising the steps of: providing a cap; providing an abrasive part; placing the cap on the abrasive part to form an assembly; holding the assembly and injecting a molding material into a space between the cap and the abrasive part and into the abrasive part to bond the cap and the abrasive part. A grinding disk made by the method is also disclosed.

Abstract: The invention relates to a method of making a grinding disk, comprising the steps of: providing a cap; providing an abrasive part; placing the cap on the abrasive part to form an assembly; holding the assembly and injecting a molding material into a space between the cap and the abrasive part and into the abrasive part to bond the cap and the abrasive part. A grinding disk made by the method is also disclosed.

Abstract: A smart exhaust gas flow control apparatus comprises at least a control unit, a solenoid valve, a vacuum auxiliary storage tank, a valve located on an auxiliary exhaust pipe, a sensor set and an operation interface. The control unit receives control commands from the operation interface to control opening and closing of the valve to select an exhaust gas path according to requirements to discharge exhaust gas, thus can avert traffic jam caused by too slow of vehicle speed and can adjust exhaust gas flow amount according to different road conditions.

Abstract: An easily controlled exhaust pipe has a manifold. One end of the manifold is connected to a distal end of a connecting tube. Another ends of the manifold are extended with a first branch tube and a second branch tube. The first branch tube is connected to a first outer tube and the second branch tube is connected to a second outer tube. The second branch tube has a controllable valve. Glass fibers and stainless steel and cotton structure are filled in the first and second outer tubes. A connecting piece welded between the first outer tube and the second outer tube. The controllable valve having a valve seat and washers. The valve seat controlled by a controller.

Abstract: An illuminating apparatus for an exhaust tail pipe includes an outer duct, an inner duct located in the outer duct, an illuminating means located between the outer duct and the inner duct, and a conductive wire linking the illuminating means to brake lights to enable the illuminating means to emit light synchronously with the brake lights. The illuminating means includes a front anchoring lid, a front insulation pad, at least one LED panel, a rear insulation pad, a rear anchoring lid, an asbestos heat insulation pad and a plug lid. Because the LED panel is sandwiched by the insulation pads on the front and the rear side, the front anchoring lid and the inner duct form an interval therebetween, and the plug lid and the outer duct have radiation openings formed on the periphery thereof and form a radiation space, the LED panel and the conductive wire may be prevented from damaging in high temperature.

Abstract: A light-emitting structure of the automotive exhaust tailpipe includes an outer tubular member which is fitted over the exhaust tailpipe and is provided with an inner tubular member fitted thereinto along with a first retaining member. A second retaining member is fitted over the inner tubular member such that a receiving space is formed between the first retaining member and a second retaining member for receiving a heat-resistant piece. The second retaining member is provided with a plurality of light bulb sockets. The automotive exhaust tailpipe is thus provided with a light-emitting effect to reinforce the warning effect of the tail lights of the motor vehicle.

Abstract: An illuminating apparatus for an exhaust tail pipe includes an outer duct, an inner duct located in the outer duct, an illuminating means located between the outer duct and the inner duct, and a conductive wire linking the illuminating means to brake lights to enable the illuminating means to emit light synchronously with the brake lights. The illuminating means includes a front anchoring lid, a front insulation pad, at least one LED panel, a rear insulation pad, a rear anchoring lid, an asbestos heat insulation pad and a plug lid. Because the LED panel is sandwiched by the insulation pads on the front and the rear side, the front anchoring lid and the inner duct form an interval therebetween, and the plug lid and the outer duct have radiation openings formed on the periphery thereof and form a radiation space, the LED panel and the conductive wire may be prevented from damaging in high temperature.

Abstract: An exhaust pipe has a manifold; one end of the manifold is connected to a distal end of a connecting tube. Another ends of the manifold are extended with a left branch tube and a right branch tube. The left branch tube is connected to a first muffler tube and the right branch tube is connected to a second muffler tube. The feature is that an interior of a middle section of the manifold has a valve which is controlled by a controller. The valve controls the area of the opening of the left branch tube communicated with the first muffler tube and the area of the opening of the right branch tube communicated with the second muffler tube. The driver may control the variation of exhaust gas without needing to adjust the exhaust pipe. The noise may be reduced easily and the performance of acceleration is enhanced.

Abstract: An easily controlled exhaust tube has a manifold. One end of the manifold is connected to a distal end of a connecting tube. Another ends of the manifold are extended with a left branch tube and a right branch tube. The left branch tube is directly connected to an outer tube of a first noise eliminating tube and the right branch tube is connected to an inner tube of a second noise eliminating tube which has a valve seat. The left and right branch tubes are enclosed by outer tubes. Glass fibers and stainless steel and cotton structure are filled in the outer tube. A connecting piece is welded between the first and second noise eliminating tubes. A valve is installed in the valve seat. A front and a rear sides of the valve seat have respective washers. The valve is controlled by a controller.

Abstract: An exhaust pipe has a manifold; one end of the manifold is connected to a distal end of a connecting tube. Another ends of the manifold are extended with a left branch tube and a right branch tube. The left branch tube is connected to a first muffler tube and the right branch tube is connected to a second muffler tube. The feature is that an interior of a middle section of the manifold has a valve which is controlled by a controller. The valve controls the area of the opening of the left branch tube communicated with the first muffler tube and the area of the opening of the right branch tube communicated with the second muffler tube. The driver may control the variation of exhaust gas without needing to adjust the exhaust pipe. The noise may be reduced easily and the performance of acceleration is enhanced.

Abstract: A replaceable muffler structure with an adjustable length includes a muffler, a tail pipe having a rear end provided with an insertion section movably mounted in a rear end of the muffler, and a positioning ring mounted on the rear end of the muffler for locking the insertion section of the rear end of the tail pipe. The rear end of the muffler has an air outlet provided with an annular flange for receiving the insertion section of the rear end of the tail pipe. The positioning ring is provided with a fitting portion fitted on the annular flange of the muffler and defines a plurality of screw holes. A plurality of bolts are each screwed into a corresponding one of the screw holes, and each urged on an outer periphery of the insertion section of the rear end of the tail pipe. A plurality of nuts are each screwed on a corresponding one of the bolts.

Abstract: A sound adjustable tail pipe structure includes an adjuster secured in a rear section of a tail pipe which defines a first oblong slot. The adjuster includes a tube having a first end provided with a first positioning base and a second end provided with a second positioning base, and an adjusting base rotatably mounted in the second positioning base. The first positioning base defines a first through hole connecting to the tube and has a wall defining a plurality of first guide holes. The second positioning base defines a second through hole connecting to the tube and has a wall defining a plurality of second guide holes, and a peripheral wall defining a second oblong slot. The adjusting base defines a third through hole connecting to the second through hole and has a wall defining a plurality of third guide holes aligning with each of the second guide holes, and a peripheral wall defining a screw hole.

Abstract: A turbine exhaust structure is provided for a vehicle which includes an exhaust tail pipe having an inner wall defining a screw hole. The turbine exhaust structure includes a turbine exhaust device secured in the inner wall of the exhaust tail pipe, and a bolt co-operating with a nut for securing the turbine exhaust device in the inner wall of the exhaust tail pipe through the screw hole. The turbine exhaust device includes a housing secured in the inner wall of the exhaust tail pipe, a wheel disk secured in the housing, a plurality of catch pieces mounted in the wheel disk, an axle base secured in a central portion of the wheel disk, an axle rod rotatably mounted in the axle base of the wheel disk and having a first end provided with a first vane wheel and a second end provided with a second vane wheel, and two bearings mounted between the axle base and the axle rod.

Abstract: An exhaust tube of the rear of an automobile includes a muffler tube and an outer tube. The muffler tube is provided with a plurality of holes in a central area therof. One end of the muffler tube is provided with a concave annular trough and further provided with a convex edge. One end of the outer tube is received within the concave annular trough when the muffler tube is combined with the outer tube. In addition, the inner side of outer tube near the end edge is engaged against the convex edge of the muffler tube.