Remote engine starter system
First Claim
1. In a remote vehicle starting system having a controller that may be remotely activated to initiate a starting of a vehicle engine, a tachometer apparatus for providing tachometric information to said controller, said apparatus comprising:
- an antenna disposed proximate to a compartment of the vehicle engine and adapted to pick-up an RF signal generated by firing of spark plugs in the vehicle engine compartment; and
an RF detector having the antenna coupled to an input thereof and providing at its output a tachometer signal for coupling to said controller and providing a signal indicative of a running status of the vehicle engine.
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Accused Products
Abstract
A tachometer apparatus of a remote vehicle starting system for providing tachometric information. The apparatus includes an antenna disposed proximate to the engine compartment of the vehicle and adapted to pick up an RF signal generated by the firing of the spark plugs in the engine compartment. The apparatus also includes an RF detector having the antenna coupled to the input thereof and providing at its output a tachometer signal for coupling to a controller and providing a signal indicative of the running status of the vehicle engine and of the tach speed of the engine.
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Citations
20 Claims
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1. In a remote vehicle starting system having a controller that may be remotely activated to initiate a starting of a vehicle engine, a tachometer apparatus for providing tachometric information to said controller, said apparatus comprising:
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an antenna disposed proximate to a compartment of the vehicle engine and adapted to pick-up an RF signal generated by firing of spark plugs in the vehicle engine compartment; and
an RF detector having the antenna coupled to an input thereof and providing at its output a tachometer signal for coupling to said controller and providing a signal indicative of a running status of the vehicle engine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. In a remote vehicle starting system having a controller that may be remotely activated to initiate a starting of a vehicle engine, a tachometer apparatus for providing tachometric information to said controller, said apparatus comprising:
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an antenna means disposed proximate to a compartment of the vehicle engine and adapted to pick-up an RF signal generated by firing of spark plugs in the vehicle engine compartment;
an RF detector means having the antenna means coupled to an input thereof and providing at its output a tachometer signal for coupling to said controller and providing a signal indicative of a running status of the vehicle engine; and
means for coupling the antenna means to the RF detector means to provide said tachometer signal. - View Dependent Claims (11, 12, 13, 14)
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15. A method of providing tachometric information to a controller that is part of a remote vehicle starting system, said method comprising the steps of:
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detecting an RF signal generated by firing of spark plugs in an engine compartment; and
generating a tachometer signal derived from the detected RF signal, coupled to the controller and indicative of a running status of the vehicle engine. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification