摘要:
An air induction system for a vehicle engine includes a sensor assembly for monitoring particulate concentration. The sensor assembly is mounted within an air intake housing, which has an inlet and an outlet. An airflow passageway extends between the inlet and the outlet to the vehicle engine. An air filter is mounted within the housing to filter particulates from air flowing through the airflow passageway. The sensor assembly can be mounted to an intake manifold or incorporated into a mass airflow sensor. The particulate sensor generates a particulate signal representative of particulate concentration entering the vehicle engine via the outlet. The signal is sent to an output device monitored by a vehicle operator.
摘要:
A method and apparatus is provided for driving a throttle blade about an axis of rotation between maximum and minimum airflow positions. The throttle assembly includes a throttle body with an airflow passage. The throttle blade is mounted for rotation with respect to the body between the maximum and minimum airflow positions. The throttle blade has a central bore for receiving at least a portion of a drive mechanism. The drive mechanism includes a motor operably connected to a gear drive to move the throttle blade between the maximum and minimum airflow positions. In one example, the drive mechanism is preassembled in a tube that is inserted into the blade bore during assembly. A position sensor is also mounted within the bore to monitor the position of the blade relative to the body.
摘要:
A method and apparatus is provided for snap-fit attachment of a throttle shaft to a throttle body. A pair of resilient cantilevered tangs is formed on a distal end of the throttle shaft. Bearings are installed within a bore formed in the throttle body to rotatably support the shaft. The shaft is inserted through an opening in the bearings to compress the tangs and the tangs are resiliently returned to an extended position to prevent withdrawal of the shaft from the throttle body.
摘要:
An active noise cancellation system (26) for controlling engine noise propagation through a vehicle induction system (32) is customizable to achieve a desired engine noise profile. A controller (34) of the active noise cancellation system drives a speaker (36) to generate a noise cancellation sound in a manner consistent with an individual's indicated preference for a specific type of available engine noise profile. By customizing how the speaker is driven, the system customizes the resulting engine noise heard in the passenger compartment. In one example, the system is customizable using a hand held communication device (24) such as a cell phone, a personal digital assistant or a so-called palm top computer. In another example, a resident communication bus on the vehicle is accessed through a user communication interface (28) supported on the vehicle.
摘要:
An electric vehicle control system controls motor response based upon monitored vehicle characteristics to provide consistent vehicle performance under a variety of conditions for a given accelerator manipulation. In one example, motor temperature is monitored. As the temperature increases, the gain of a power signal provided to the motor is increased to make up for the motor's hindered performance under higher temperature conditions. Other vehicle characteristics that are taken into account include a charge level in a fuel cell or current vehicle speed and engine load.
摘要:
In a molded intake manifold/fuel rail, a through-passage for the conveyance of combustion air is created by disposing two separably engaged core parts of the mold to occupy the entirety of the through-passage during the molding process. After molded material has solidified, the core parts are separated in generally opposite, but non-colinear directions. During the molding process, one core part occupies the entire length of the through-passage along a certain circumferential extent of the through-passage while along another circumferential extent, both core parts conjointly occupy the entire length of the through-passage.
摘要:
The injector is mechanically retained in the molded composite socket member by an annular cap that is threaded onto the end of the socket member containing the end of the through-bore into which the injector was inserted. The sidewall of the cap contains an internal helical thread that threads to an external helical thread on the exterior of the socket member. The cap stiffens the socket wall at the thread to strengthen the socket wall against circumferential expansion caused by the pressure of fuel in an annular space that surrounds the injector interior of the socket through-bore. A method for making the cap and joining it to the socket member is also disclosed.
摘要:
The throttle blade is made to have a resilient outer margin whose outside diameter is circular and essentially equal to the diameter of the throttle bore within which the blade is disposed. The blade can maintain control even at engine idle. Several embodiments of throttle blade are disclosed. In one, an elastomeric seal is insert-molded onto the main blade body; in another, the seal is a multitude of short bristles; in still another, it is a stamped polytetrafluoroethylene part. There is also a special construction for assembling the shaft.
摘要:
An internal combustion engine has two differently tuned sets of runners leading to the cylinders. A wave deflector element transversely spans a particular runner for one cylinder and the corresponding particular runner for an adjacent cylinder, and there is one wave deflector element for each pair of cylinders. The wave deflector elements are selectively operated in unison by an actuator to either open or close the runners of the set with which they are associated depending upon the operating state of the engine. The actuator is controlled by an electronic control unit. Each wave deflector element comprises a shaft and a pair of wave deflectors integrally formed of plastic so as to be of one-piece construction. The wave deflector element is resiliently flexible by bending for installation in the runners that it controls.
摘要:
A process for manufacturing an air flow assembly having a valve disc within a bore. A first support is inserted into the bore from below the valve disc, and a second “floating” support is inserted from above the disc. The second support “floats” relative to the disc upon a fluid receiving member such as an inflatable bellows. As the fluid receiving member allows the second support to float when contacting the disc, any inconstancies of the disc are compensated by the “floating” second support. As the disc is squeezed between the supports heat conducted from heaters causes the material of the disc to be extruded radially outwardly into contact with the bore to obtain a consistent thickness at the disc outer periphery.