摘要:
A diagnostic system and method for diagnosing the performance of a particulate matter (PM) filter of an exhaust system each involve receiving, by a controller from at least one sensor, a gas component measurement of exhaust gas flowing through the exhaust system and the PM filter. The controller calculates a conversion efficiency of the gas component by the PM filter and compares the calculated conversion efficiency to a predetermined conversion efficiency threshold indicative of an expected conversion efficiency of a flow-through catalyst. The controller then determines whether the PM filter is cracked or damaged based on the comparison between the calculated conversion efficiency and the predetermined conversion efficiency threshold.
摘要:
An evaporative emissions (EVAP) control system for a vehicle includes a purge pump configured to pump fuel vapor trapped in a vapor canister to an engine of the vehicle via a vapor line when engine vacuum is less than an appropriate level for delivering fuel vapor to the engine, the fuel vapor resulting from evaporation of a liquid fuel stored in a fuel tank of the engine. The EVAP control system includes a hydrocarbon (HC) sensor disposed in the vapor line and configured to measure an amount of HC in the fuel vapor pumped by the purge pump to the engine via the vapor line. The EVAP control system also includes a controller configured to, based on the measured amount of HC, control at least one of the purge pump and a purge valve to deliver a desired amount of fuel vapor to the engine.
摘要:
The invention concerns a method (200) and system (100) for controlling communication replies. The method can include the steps of selecting (210) one or more recipients of a call at an originating communication unit (110), placing (212) the call to the selected recipients and sending (214) along with the placed call a no reply indicator to the recipients of the call that will automatically block a reply call from the recipients. This block may prevent the recipients from having an opportunity to place the reply call. The method may also include the step of receiving (216) an acknowledgement from one or more of the recipients that indicates that the recipients received the placed call. As an example, the call can be a dispatch call, and the recipients can be members of a predetermined dispatch group.
摘要:
The fuel delivery control system monitors engine speed and load parameters to develop a wall wetting history that is indicative of the physical state of the fuel within the intake port or intake manifold. The wall wetting history is used along with engine speed, temperature and pressure measurements to determine the pulse width of the fuel injector signal. Fuel to air ratio is thereby optimized. Transient conditions due to changes in engine load or due to acceleration and deceleration are used to generate a pulse width correction signal to optimize performance on a cycle by cycle basis. Each engine cylinder injector may be independently controlled.
摘要:
A method of controlling idle speed of an internal combustion engine in an automotive vehicle is provided. The method includes the steps of calculating an acceleration error of the engine and determining whether the calculated acceleration error is greater than a predetermined deadband. The method also includes the steps of opening or closing an Automatic Idle Speed (AIS) stepper motor if the acceleration error is greater than the predetermined deadband and increasing or decreasing a spark advance if the acceleration error is not greater than the predetermined deadband.
摘要:
A method (10) and system (200, 400, or 500) of call reverse can include initiating (12) a call by an originating party (204) to a terminating party (208), comparing (14) rate plans, and automatically reversing (26) the call if a rate plan for the terminating party is currently more economical than a rate plan for the originating party. The method can compare (22) rate plans at a server (206) having rate plan information for the parties. Alternatively, the method can send (16) rate plan information for the originating to the terminating party and compare rate plans at the terminating party. The method can pre-store (20) rate plan information for the originating party at a memory at the terminating party. The method can also use (24) Caller ID to detect a call from the originating party and compare pre-stored rate plan information for the originating party stored at the terminating party.
摘要:
A method (200) for communicating messages (170, 175). A priority level can be associated with a message, and a time in which to communicate the message can be automatically selected based on the associated priority level and a communication rate plan (165). The message can be automatically communicated at the selected time. A subscriber communication rate plan can be queried to determine when there is a discounted communication rate or when free communications are available. The message can be communicated immediately if the priority that is associated with the message is high. The present invention also relates to a method (500) for processing calls. An inbound call (405) can be received and a priority level can be associated with the call. The call can be automatically sent to voice mail if the priority level is low or a call session can be established if the priority level is high.
摘要:
A method of catalyst purging (run-time) fuel lean-out for an internal combustion engine including the steps of determining whether the engine is in a throttle deceleration condition or a MAP deceleration condition, sensing a speed of the engine, determining whether the current sensed engine speed is above a predetermined speed if the engine is in a throttle or MAP deceleration condition, determining a magnitude of a run-time lean-out multiplier (RTLEAN) value if the current sensed engine speed is above the predetermined speed, and applying the determined RTLEAN value to a fuel pulsewidth value of fuel injectors for the engine and reducing the amount of fuel injected into the engine by the fuel injectors.
摘要:
An internal combustion engine is provided having a luminosity detector and an arrangement for measuring certain parameters and running conditions of the engine such as air/fuel ratio in response to sensed combustion conditions within the combustion chamber based on particular gain independent parameters of the luminosity signal and selected engine parameters such as speed. The gain independent luminosity parameters can also be used in an engine control loop to ajust the various parameters of the engine like air/fuel ratio so as to obtain the desired luminosity characteristics and to obtain better running of the engine.
摘要:
A method (10) and system (200, 400, or 500) of call reverse can include initiating (12) a call by an originating party (204) to a terminating party (208), comparing (14) rate plans, and automatically reversing (26) the call if a rate plan for the terminating party is currently more economical than a rate plan for the originating party. The method can compare (22) rate plans at a server (206) having rate plan information for the parties. Alternatively, the method can send (16) rate plan information for the originating to the terminating party and compare rate plans at the terminating party. The method can pre-store (20) rate plan information for the originating party at a memory at the terminating party. The method can also use (24) Caller ID to detect a call from the originating party and compare pre-stored rate plan information for the originating party stored at the terminating party.