摘要:
A hybrid electric vehicle is placed in a running condition on a chassis dynamometer, a vehicle-end data is acquired by access to sensors in the vehicle, a dynanometer-end data is acquired by measurements at the chassis dynamometer, and the vehicle-end data and the dynamometer-end data are analyzed for inspections of drive and control systems of the vehicle.
摘要:
An improved roller 12 for a dynamometer 10 includes a plurality of equally spaced, congruent recesses 16 parallel to the longitudinal axis of the roller 12 and circumferentially positioned around the perimeter of the roller 12. The recesses 16 form a plurality of equally spaced, substantially planar, congruent surfaces 18 parallel to the longitudinal axis of the roller 12 and circumferentially positioned around the perimeter of the roller 12. The surfaces 18 engage the drive wheel of a vehicle and limit slippage and/or creepage between the drive wheel and the roller resulting in increased power transfer between the drive wheel and roller and increased dynamometer accuracy and repeatability.
摘要:
A system is provided for calibrating a position sensor having a variable output corresponding to the variable position of a movable member. The system establishes, for the position sensor an original assumed output corresponding to a given position of the movable member, establishes for the position sensor a maximum output corresponding to the given position, the maximum output being greater than or equal to the assumed output, establishes for the position sensor a minimum output corresponding to the given position, the minimum output being less than or equal to the assumed output, determines an actual output of the position sensor and, if the actual output is between the maximum output and the minimum output, the system reestablishes the assumed output as being a function of the original assumed output and the actual output.
摘要:
An oil level detector includes a circular holder base installed in an oil tank of a vehicle to hold an insulative sleeve in a bottom tube thereof, a float floating with the level of oil along the bottom tube, and a circuit board mounted in the insulative sleeve to detect the elevation of the float, wherein the tube which holds the insulative sleeve inside the holder base is an anticorrosive close-end tube; the insulative sleeve has both ends sealed with a respective sealing cap, the sealing cap which seals the top end of the sleeve being forced into tight engagement with the inner diameter of the tube when the sleeve is installed in the tube, causing the top end of the tube to be water-tightly sealed.
摘要:
A system detecting leakage of an internal combustion engine having a secondary air passage, bypassing a throttle valve, at an air intake pipe connecting to the intake manifold and a secondary air control valve which regulates opening of the secondary air passage. In the system, when the changes in the absolute manifold pressure and the atmospheric pressure before and after the engine starts rotation, are small, it is determined that the intake manifold may possibly leak and should be monitored. Specifically, the opening of the secondary air passage is changed and the changes in the pressure, etc., before and after the opening is changed, are calculated and based thereon, it is determined whether the intake manifold, in fact, leaks. With this, it becomes possible to detect intake manifold leakage accurately with a simple configuration.
摘要:
A controller for controlling and monitoring the operation of an engine-generator is disclosed. The controller includes a central processing unit, a power supply, an input/output system, a communication system, an annunciation system and mode control switches. The operational status of the engine-generator is displayed on a liquid crystal display and logged in a data storage system or communicated to an external system using a communications interface. The controller also incorporates a monitoring system.
摘要:
A method for determining engine position during engine starting is described wherein cylinder identification is determined based on either the absence or presence of a cylinder identification signal. The approach is used when it is determined that engine speed is large enough so that the cylinder identification signal can be recognized.
摘要:
The method and apparatus according to the invention permits stable driving operation of a motor vehicle at an extremely low vehicle speed by means of an electronic control unit. The internal-combustion engine is automatically adjusted by the control unit to a special rotational speed operation when a defined switch is operated or when a defined set of conditions exists. During special rotational speed operation, the special rotational speed is below the normally permissible idling rotational speed.
摘要:
An ignition system for an internal combustion engine includes an ignition coil coupled to a spark plug in a combustion chamber of the engine, and a switch responsive to an ignition control signal for causing a primary current to flow through a primary winding of the ignition coil. A control circuit is configured to generate the ignition control signal so as to produce a plurality of sparks at the spark plug during a combustion event in the cylinder. A combustion detection circuit in sensing relation with the combustion cylinder is configured to generate a combustion detect signal when combustion occurs. The control circuit is further configured to terminate the generation of the ignition control signal during the combustion event in response to the combustion detect signal, thereby terminating multicharge operation when the need for further sparks is no longer present. Unnecessary spark plug wear is avoided.
摘要:
A device for detecting the misfire in an internal combustion engine which features improved reliability for judging the misfire in all operation regions by using either the revolution data or the ionic current depending upon the operation region. The device comprises various sensors 1 and 2 for detecting the operation conditions Ne and Qa of the internal combustion engine, an operation region detection means 12 for detecting the operation region R from the operation conditions, a control parameter operation means 11 for operating control parameters J, P based upon the operation conditions, an ignition device 4 for igniting the internal combustion engine relying upon the control parameters, an ionic current detection unit 5 for detecting an ionic current generated upon the ignition, a first misfire judging means 15 for judging the misfire in the internal combustion engine based upon a change in the time of the revolution data Ne, a second misfire judging means 16 for judging the misfire based upon the ionic current, and a misfire judgement selection means 17 for selectively using the first misfire judging means or the second misfire judging means depending upon the operation region.