Abstract: An ornament assembly for an exhaust pipe of a vehicle has a sleeve, an axle, a spring and a propeller. The sleeve is secured in an opening end of the exhaust pipe. The axle is moveably received in the sleeve. The axle has a first end exposed from the sleeve and a second and extending into the sleeve. The spring is received in the sleeve and is securely attached between the sleeve and the second end of axle. The propeller is rotatably mounted on the first end of the axle. Accordingly, the propeller will rotate when the waste gases are emitted from the exhaust pipe, and the axle will move relative to the sleeve. This can provide an excellent visual effect to the vehicle, and the appearance of the vehicle is improved.

Abstract: In a catalyzer arrangement in an exhaust system of a multi-cylinder internal combustion engine, each of exhaust pipes connected with exhaust ports of the engine has a first exhaust pipe section extending away from a main body of the engine, a second exhaust pipe section contiguous to the first exhaust pipe section having a first curved portion for turning the second exhaust pipe section toward the main body of the engine, and a third exhaust pipe section contiguous to the second exhaust pipe section having a second curved portion for turning the third exhaust pipe portion away from the main body of the engine. A catalyzer is connected to a downstream side of the third exhaust pipe section and disposed within a space surrounded by the first, second and third exhaust pipe sections. The exhaust pipes are divided into one group positioned near one end of a row of cylinder of the engine and another group positioned near another end of the row of cylinder.

Abstract: An exhaustion pipe structure including a hollow tube body, a fitting ring, locking plates, locking screws, an exhaustion fitting pipe and a decoration. The decoration is replaceably fitted with the hollow tube body which is fitted around the exhaustion pipe of a car so as to beautify the exhaustion pipe.

Abstract: An exhaust pipe extension having movable fan blades mounted on a center axle which blades and part of the axle extend into an opened vehicle exhaust pipe. The other end of the same axle is fixed connected to a rotatable end decorative visual spinner within a hollow housing. To provide for individuality the visual spinner can take on a variety of different sizes and shapes. The spinner rotates in unison with the propelled fan blades which blades are driven by the vehicle's exhaust gases. Appropriate easily detachable mounts are used to fix the housing and its axle and the fan blade members to the vehicle's exhaust pipe to provide for an attractive add-on accessory.