Abstract: A Line Replaceable Unit (LRU) support system incorporates a unitary tray having a rear boss and an integral Air Cooling System (ACS) plenum and an ACS conduit through the rear boss communicating with the plenum. A tray support and alignment element provides a flange with tray attachment studs extending from a front surface, wall attachment studs extending from a rear surface, and an ACS aperture. The wall attachment studs are received in spaced holes in a mounting structure and the tray attachment studs are received in bores in the rear boss of the tray. Insertion of the tray attachment studs aligns the ACS conduit in the rear boss and the ACS aperture in the flange. A backing plate engages the wall attachment studs to secure the tray support and alignment element to the mounting structure. The backing plate includes an ACS spud aligned with the ACS aperture.

Abstract: A Line Replaceable Unit (LRU) support system incorporates a unitary tray having a rear boss and an integral Air Cooling System (ACS) plenum and an ACS conduit through the rear boss communicating with the plenum. A tray support and alignment element provides a flange with tray attachment studs extending from a front surface, wall attachment studs extending from a rear surface, and an ACS aperture. The wall attachment studs are received in spaced holes in a mounting structure and the tray attachment studs are received in bores in the rear boss of the tray. Insertion of the tray attachment studs aligns the ACS conduit in the rear boss and the ACS aperture in the flange. A backing plate engages the wall attachment studs to secure the tray support and alignment element to the mounting structure. The backing plate includes an ACS spud aligned with the ACS aperture.

Abstract: A method for determining the existence of a “short time” type state within a vehicle control assembly 10. The method requires the measurement of the temperature 59 of engine coolant 16 at a first time 61 and the determination and/or the inferential creation of the temperature 60 of the engine coolant 16 at a second and later time 62. A “short time” type state is identified when the temperature 60 at the second time 62 is greater than or equal to the temperature 59 at the first time 61.

Abstract: The invention is a strategy to detect spark plug misfires in a multiple spark plug per cylinder internal combustion engine (ICE). The present invention monitors spark plug misfires for each plug within each cylinder and initiates diagnostic fault code setting and failure mode actions such as modifying spark timing and the air/fuel ratio for the cylinder with the misfiring plug to optimize emissions and performance. The strategy modifies spark timing (such as spark retard) of a spark plug not under test but within the same cylinder of the tested spark plug and tests the tested spark plug for misfire (such as changes in crankshaft velocity or acceleration). The amount of spark retard invoked can be a calibrated value such as 30 or 50 degrees off Maximum Brake Torque (MBT) timing. The invention provides improvement over the prior art in that the strategy does not require the complete disabling of a spark plug within the same cylinder as the tested spark plug.

Abstract: A method is provided for controlling an internal combustion engine in a vehicle. The method includes adjusting a fuel injection amount during engine crank based on a barometric pressure. The barometric pressure is determined from at least one signal received from at least one transmitter external from the vehicle.

Abstract: A system and method are disclosed for detecting spark plug malfunction in an engine having more than one spark plug per cylinder.

Abstract: The present invention related generally to a method for determining spark plug malfunction and more particularly to a method for determining spark plug malfunction in an internal combustion engine in which at least two spark plugs are disposed in each cylinder. In a dual plug configuration, a spark plug malfunction is detected by disabling one of the spark plugs during a test period in a particular cylinder. A misfire provides an indication of malfunction of the other spark plug.

Abstract: A method is provided for controlling an internal combustion engine in a vehicle. The method includes adjusting a fuel injection amount during engine crank based on a barometric pressure. The barometric pressure is determined from at least one signal received from at least one transmitter external from the vehicle.

Abstract: The invention is a strategy to detect spark plug misfires in a multiple spark plug per cylinder internal combustion engine (ICE). The present invention monitors spark plug misfires for each plug within each cylinder and initiates diagnostic fault code setting and failure mode actions such as modifying spark timing and the air/fuel ratio for the cylinder with the misfiring plug to optimize emissions and performance. The strategy modifies spark timing (such as spark retard) of a spark plug not under test but within the same cylinder of the tested spark plug and tests the tested spark plug for misfire (such as changes in crankshaft velocity or acceleration). The amount of spark retard invoked can be a calibrated value such as 30 or 50 degrees off Maximum Brake Torque (MBT) timing. The invention provides improvement over the prior art in that the strategy does not require the complete disabling of a spark plug within the same cylinder as the tested spark plug.

Abstract: Methods of utilizing engine 15 crankshaft acceleration 17 to monitor cold start spark retard are presented. A first method utilizes a variance in a crankshaft acceleration based deviation signal 21 and looks for changes in the variance to confirm if cold spark retard has occurred by the ignition system. In a second method, a threshold level of a group of cylinder crankshaft acceleration deviation signals &Dgr;, can be detected and compared to a level of crankshaft deviant acceleration when normal spark is commanded to determine if commanded spark retard has been realized.

Abstract: A method is presented for determining whether a fuel sensor in a vehicle having a fuel tank, a fuel delivery system, electronic engine controller, air flow and air/fuel ratio sensors and an instrument panel is stuck in-range. First, the electronic engine controller from the information provided by the above sensors estimates an amount of fuel consumed. The estimate is then compared to the actual fuel consumed data from the fuel sensor. If the difference between the actual and estimated amounts exceeds a small predetermined constant, the determination is made that the fuel sensor is stuck in-range and a diagnostic code is sent to the instrument panel and stored for use by a service technician.

Abstract: An evaporative purge system 10 of an internal combustion engine 14 powered motor vehicle is monitored using one or more relatively long time tests in the cruise operating mode of the motor vehicle to screen for emission of vapors which, allegedly, contributes to smog. If emission is detected in the cruise operating mode, a command is generated and stored in memory to subsequently monitor the system in the idle operating mode. The evaporative purge system is subsequently monitored using a relatively short time test in the idle operating mode of the motor vehicle to confirm vapor emission.

Abstract: A method is presented for diagnosing an engine coolant temperature sensor and an engine thermostat. Engine coolant temperature is estimated based on engine operating conditions, such as engine speed, net engine torque, air flow, fuel-air ratio, exhaust gas temperature, etc., and a characteristic of the thermostat. The estimate is compared to the actual reading of the engine coolant temperature sensor in order to detect degradation in the performance of the sensor or the engine thermostat. If degradation is detected, the estimated engine coolant temperature can be used for various engine control strategies, such as electronic fuel injection, thereby improving vehicle performance, fuel efficiency, and emission control.

Abstract: A parenteral formulation for 25-cyclohexyl-avermectin Bl, compound (I), which is effective against both internal and external parasites, is well tolerated by animals on both subcutaneous and intramuscular administration and is compatible with conventional injection equipment. ##STR1## The solution comprises compound (I), in a solvent consisting of from 50 to 95% by volume of sesame oil with the remainder ethyl oleate.

Abstract: Improved pharmaceutical salts of amlodipine, particularly the besylate salt, and pharmaceutical compositions thereof. These salts find utility as anti-ischaemic and anti-hypertensive agents.