6 also provides for the priming of the intake manifold of the engine 118 just prior to cessation of engine rotation during the engine shutdown so that when the engine rotation is fully stopped, the intake manifold is filled with a fuel and air mixture so that a combustible mixture is immediately drawn into the combustion space for ignition when the engine restart is initiated. TMV’s Automatic Engine Stop/Start (A.E.S.S.) After step 243, the program proceeds to step 244 where the spark disable flag is set to indicate that the ignition system is to be maintained disabled so that if the engine has not yet ceased rotation, ignition of a combustible mixture drawn into the combustion chambers is prevented. However, if the throttle position is greater than the predetermined value Tk representing an operator commanded driveaway start, the program proceeds from the step 390 to a step 392 where the winding 330 of the fast fill valve 328 is energized to couple the fluid in the chamber 316 in the accumulator 318 directly to the fluid chamber of the forward drive clutch without restriction. Pulses having a frequency representing engine speed are provided by a speed pickup 135 which monitors rotation of the flywheel of the engine 118 and provides pulses to the input counter section of the input/output circuit 108. However, the throttle open flag is not reset if the engine is not running. It includes basic engine protection for low oil pressure and high coolant temperature. The fast fill accumulator valve 328 is also deenergized at this time and the accumulator 318 is charged with fluid under pressure through the check valve 320. And these systems are pretty clever - some of them even organise the engine to stop at exactly the right spot for a restart. During this routine, the engine is primed to provide immediate restart capability in accord with this invention. Available in either 12 or 24 volts, this version of the Engine Idle Limiter will shut engines down after 3 minutes of idling time. Typically, all of those elements would be within the transmission housing. 1 may be generated to control a switch to open the primary winding circuit of the ignition system during the period the ignition circuit is to be disabled. For example, a timer may be employed when the starter motor is deenergized as sensed at step 208 before the emergency restart flag is set at step 204 to allow the battery voltage to stabilize after the starter motor is deenergized. restart means responsive to the opening of the throttle valve effective to (a) energize the starter motor to effect restart of the internal combustion engine and (b) deenergize the starter motor when the engine rotational speed represents the engine has started, whereby the charging of the intake space with a combustible mixture during engine shutdown is effective to provide a combustible mixture that is drawn into the combustion space when restart is initiated to effect immediate restart of the internal combustion engine. In order to reduce the consumption of fuel and to reduce the amount of emissions from a vehicle internal combustion engine, it has been suggested to shut down the engine when the vehicle is brought to a stop and to automatically restart the engine in response to an operator command to initiate vehicle movement. If the winding 315 is then energized along, the chamber of the forward drive clutch is slowly filled by the pressurized fluid in the accumulator 318 at a rate determined by the orifice 332 and the spring 326 to provide a slowly increasing engagement force of the forward drive clutch. Engine Protection System. This step may include addressing a lookup table in the ROM 102 as a function of engine speed and manifold absolute pressure stored at step 158 to retrieve a pulse width producing a desired air/fuel ratio. Marine Supplies Since 1928! 11 is wound to store energy for assisting a subsequent engine restart. This invention relates to a method and apparatus for automatically shutting down and restarting a vehicle internal combustion engine. See if your engine is EICS-ready today! 7 to command an automatic restart. That’s gunna get old. If a fire breaks out aboard a diesel powered vessel, the engine (s) must be shut down immediately for the Fireboy fire extinguisher system to effectively extinguish the fire. Engine Shutdown Systems. Starting with most Model Year 2020 vehicles, Toyota will provide additional features such as automatic engine shut off or “Auto Shut Off” with an enhanced audible and visual warning to its Smart Key System* (SKS). This only requires reset after an automatic shut down or after a manual emergency shut down. If, when the program returns to decision point 170, the engine is started as represented by the engine speed being greater than the reference speed RPM1, the program proceeds to step 176 where the first time start flag is set to indicate that the vehicle engine has been started manually by the vehicle operator. You don’t use any additional fuel on a hot start in a modern engine either. They’re lab tests from which the official fuel figures are derived - and these numbers are very important to carmakers, because fuel consumption is increasingly important to regulators and buyers. Especially in a diesel, which has to battle a ton of compression when it restarts. 5, the shutdown signal routine 178 of FIG. Order part number 57-A277-10. No. Therefore, during the period that the engine is running and thereafter shut down, the chamber 316 of the accumulator is filled and remains filled with fluid under pressure. The AESS system receives input from train-lines, various sensors, and other systems to determine the state of the locomotive. The shutdown control routine is entered at point 222 and proceeds to a decision point 224 where the condition of the shutdown flag is sampled. The engine’s ready to rip, there’s plenty of oil ‘upstairs’ and the parts are all toasty, so the wear rate then is essentially zero. The fluid in the accumulator chamber 316 is coupled to the chamber of the forward drive clutch through a fluid passage including an electromagnetic valve 328. Override and disable features allow the engine to … First on the starting system itself: You can design anything to be reliable, for any number of cycles. The accumulator 318 includes a piston 322 slidably disposed in a housing 324 and which is moved by the fluid under pressure from the drive port output 312 of the manual shift valve 310 against the return force of a spring 326. If the starter is energized, it can be assumed that the battery voltage is low as a result of the high power requirements for starting the vehicle engine. generation, Vehicle air-fuel controller having hot restart air/fuel ratio adjustment, Internal combustion engine starter disconnect system, Method and apparatus for automatic engine shut-off and restart, Exhaust gas purification promoting device, Engine condition-responsive shutdown and warning apparatus, <- Previous Patent (Ignition system empl...). When the key is turned off, as a safety feature. System includes two individual relays for propulsion engines for redundancy. It’s like you wanting the radio off, and therefore you turn it off, and every time you get back in the car, it’s on again, with the volume on ‘9’. If fire breaks out aboard a diesel powered vessel, the engine (s) must be shut down immediately for the Fireboy fire extinguisher system to effectively extinguish the fire. This door switch may be the conventional door switch that is closed upon opening of the doors to energize the vehicle courtesy lights. It’s like the engine has a stutter and then decides to get going. ViewFireboy Xintex Automatic Engine Shutdown Systems System; 8 Circuit- Get Lowest Price- Compare Prices- Go to West MarineFireboy Xintex Automatic Engine Shutdown Systems System; 8 Circuit . Continued operation may remove the agent, creating the possibility of re-ignition. This flag is set when the vehicle operator opens the vehicle throttle at step 198 of FIG. 8 in accord with a driver input representing either a commanded standing start or a commanded driveaway start to control the rate of increase in the engagement force of the forward drive clutch. 11. This provides the capability for the operator to touch and then release the throttle to initiate a standing restart of the engine. Mazda's i-Stop system is the 'Coca-Cola' of auto engine shutdown systems - and while they try hard to sex up the benefits, the cars would be better without it. 8, the restart control routine is entered at point 334 and proceeds to sample the shutdown flag at step 336. The warmed-up temperature TEMPK represents a temperature above which it is assumed that the vehicle engine may be readily restarted and below which engine starting may be more difficult thereby making automatic shutdown and restart undesirable. The starter motor is deenergized at step 352 at the end of the timed period TW. However, if the start flag is reset indicating the conditions have not been met for an automatic restart, the program proceeds to a decision point 272 where the engine speed is compared with a calibration speed RPM2 representing a value of engine speed such as 50 rpm above which it is not desired to initiate cranking of the vehicle engine. Specifications: 1. If the time has expired, the program proceeds to step 388 where the starter motor solenoid 142 is deenergized to terminate cranking of the engine 118. Number one with a bullet: Automatic engine shutdown and restart systems save you bugger-all fuel. In general, the shutdown signal routine sets a shutdown flag to initiate an automatic vehicle engine shutdown if the vehicle is first driven to a calibration speed SPDEN, the throttle is then closed, the transmission 136 gear selector is not in L1 or L2, the vehicle battery is charged and the engine temperature has attained a warmed-up temperature TEMPK. High / Low Battery Voltage Activated when battery voltage is above or below nominal voltage. From steps 362 and 392, the program exits the restart control routine. A modern engine either to a decision point 190 problem with a hot start in a modern engine.. 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