Automative engine simulating apparatus
First Claim
1. Apparatus for simulating the operating characteristics of an automobile engine comprising:
- starting means for electrically simulating the ignition system of the engine;
means for generating an electrical signal representative of engine revolutions per minute under various engine operating conditions;
control means for controlling the signal generating means, the control means simulating a transfer function derived for the engine;
speed means for simulating engine acceleration and deceleration;
sensor simulating means for simulating the operation of an oxygen sensor normally positioned in an exhaust system of the engine and for generating an electrical signal representative of an output signal supplied by the oxygen sensor;
first servo simulating means for simulating the operation of a first electromechanical device controlled by an automobile engine control system; and
second servo simulating means for simulating the operation of a second electromechanicl device controlled by the automobile engine control system whereby the apparatus is useful for testing and calibrating a feedback and automatic idle speed control system for the automobile.
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Accused Products
Abstract
Apparatus for simulating the operating characteristics of an automobile engine. The ignition system of the engine is electrically simulated and an electrical signal representative of engine revolutions per minute under various engine operation conditions is generated. A transfer function derived for the engine is implemented to control generation of the electrical signal. Engine acceleration and deceleration is simulated. An oxygen sensor normally positioned in an exhaust system of the engine is simulated with an electrical signal representative of an output signal supplied by the oxygen sensor being generated. Operation of a first electromechanical device controlled by an engine control sysem is simulated as is the operation of a second electromechanical device. The apparatus is useful for testing and calibrating a feedback and automatic idle speed control system for the automobile.
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Citations
24 Claims
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1. Apparatus for simulating the operating characteristics of an automobile engine comprising:
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starting means for electrically simulating the ignition system of the engine; means for generating an electrical signal representative of engine revolutions per minute under various engine operating conditions; control means for controlling the signal generating means, the control means simulating a transfer function derived for the engine; speed means for simulating engine acceleration and deceleration; sensor simulating means for simulating the operation of an oxygen sensor normally positioned in an exhaust system of the engine and for generating an electrical signal representative of an output signal supplied by the oxygen sensor; first servo simulating means for simulating the operation of a first electromechanical device controlled by an automobile engine control system; and second servo simulating means for simulating the operation of a second electromechanicl device controlled by the automobile engine control system whereby the apparatus is useful for testing and calibrating a feedback and automatic idle speed control system for the automobile. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification