ISA engine start-up strategy
First Claim
1. A method for starting a vehicle, said vehicle comprising a vehicle engine, a starter motor linked to said vehicle engine through an engine clutch, and a plurality of vehicle systems linked to said starter motor, said method comprising the steps of:
- starting said starter motor;
checking the status of one or more of said vehicle systems to determine whether said vehicle engine should be started;
applying a torque to said vehicle engine by connecting said vehicle engine with said starter motor through said engine clutch; and
confirming whether said vehicle engine has successfully startedproviding a multi-position ignition switch linked to said starter motor;
recognizing the initial status of one or more of said vehicle systems required to start said vehicle engine;
detecting whether said multi-position ignition switch is not positioned in a pre-determined position for a set length of time; and
shutting down the starter motor.
6 Assignments
0 Petitions
Accused Products
Abstract
There is provided a method for automatic operation of a vehicle comprising an engine, a starter motor, an engine clutch, and a plurality of vehicle systems. After detecting that the engine is running, the vehicle systems are checked to ensure an acceptable status for shutting down the engine. A negative torque is applied to the engine to shut it down. Vehicle systems are monitored until they indicate that the engine should be restarted. The engine is restarted, and a successful start of the engine is then confirmed. Similarly, there is provided a method for the cold start of a vehicle as above. The starter motor is powered up with an initial torque and vehicle systems are monitored to determine whether the engine should be started. The engine is started from the torque of the starter motor, and a successful start of the engine is then confirmed.
25 Citations
8 Claims
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1. A method for starting a vehicle, said vehicle comprising a vehicle engine, a starter motor linked to said vehicle engine through an engine clutch, and a plurality of vehicle systems linked to said starter motor, said method comprising the steps of:
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starting said starter motor; checking the status of one or more of said vehicle systems to determine whether said vehicle engine should be started; applying a torque to said vehicle engine by connecting said vehicle engine with said starter motor through said engine clutch; and confirming whether said vehicle engine has successfully started providing a multi-position ignition switch linked to said starter motor; recognizing the initial status of one or more of said vehicle systems required to start said vehicle engine; detecting whether said multi-position ignition switch is not positioned in a pre-determined position for a set length of time; and shutting down the starter motor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for starting a vehicle, said vehicle comprising a vehicle engine, a starter motor linked to said vehicle engine through an engine clutch, and a plurality of vehicle systems linked to said starter motor, said method comprising the steps of:
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starting said starter motor; checking the status of one or more of said vehicle systems to determine whether said vehicle engine should be started; applying a torque to said vehicle engine by connecting said vehicle engine with said starter motor through said engine clutch; confirming whether said vehicle engine has successfully started; evaluating the amount of time said vehicle engine has idled without a start attempt; detecting whether said multi-position ignition switch is in a pre-determined position; and shutting down said starter motor if the amount of time said vehicle engine has idled reaches a predetermined length.
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8. A method for starting a vehicle, said vehicle comprising a vehicle engine, a starter motor linked to said vehicle engine through an engine clutch, and a plurality of vehicle systems linked to said starter motor, said method comprising the steps of:
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starting said starter motor; checking the status of one or more of said vehicle systems to determine whether said vehicle engine should be started; applying a torque to said vehicle engine by connecting said vehicle engine with said starter motor through said engine clutch; confirming whether said vehicle engine has successfully started; evaluating whether the current angular velocity of said vehicle engine is greater than that of the vehicle engine while idle; evaluating the time said vehicle engine has been cranking without starting, if said vehicle engine'"'"'s speed is less than idle speed; and shutting down said starter motor if said time of cranking is greater than a pre-determined length of time.
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Specification