CIRCUIT ARRANGEMENT FOR VEHICLE ECU
First Claim
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1. A circuit arrangement comprising:
- a vehicle ECU configured to control a fuel injection system of a vehicle engine;
a plurality of first sensors electrically connected with the ECU in a daisy-chain arrangement, each of the plurality of first sensors being configured to operate at a first voltage and to sense a respective vehicle engine condition; and
a plurality of second sensors electrically connected with the ECU in a daisy-chain arrangement, each of the plurality of second sensors being configured to operate at a second voltage, which is different than the first voltage, and to sense a respective vehicle engine condition.
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Abstract
A circuit arrangement includes a vehicle ECU, a plurality of first sensors electrically connected with the ECU in a daisy-chain arrangement, and a plurality of second sensors electrically connected with the ECU in a daisy-chain arrangement. The ECU is configured to control a fuel injection system of a vehicle engine. Each of the plurality of first sensors is configured to operate at a first voltage and to sense a respective vehicle engine condition. Each of the plurality of second sensors is configured to operate at a second voltage, which is different than the first voltage, and to sense a respective vehicle engine condition.
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Citations
20 Claims
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1. A circuit arrangement comprising:
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a vehicle ECU configured to control a fuel injection system of a vehicle engine; a plurality of first sensors electrically connected with the ECU in a daisy-chain arrangement, each of the plurality of first sensors being configured to operate at a first voltage and to sense a respective vehicle engine condition; and a plurality of second sensors electrically connected with the ECU in a daisy-chain arrangement, each of the plurality of second sensors being configured to operate at a second voltage, which is different than the first voltage, and to sense a respective vehicle engine condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A vehicle system comprising:
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a vehicle ECU configured to control a fuel injection system of a vehicle engine; a first cable connected with the ECU; a first sensor connected with the first cable and configured to operate at a first voltage and to sense a first vehicle engine condition; a second cable connected with the first sensor; a second sensor connected with the second cable and configured to operate at the first voltage and to sense a second vehicle engine condition; a third cable connected with the ECU; a third sensor connected with the third cable and configured to operate at a second voltage, which is different than the first voltage, and to sense a third vehicle engine condition; a fourth cable connected with the third sensor; and a fourth sensor connected with the fourth cable and configured to operate at the second voltage and to sense a fourth vehicle engine condition; wherein each cable includes at least two respective signal wires, a respective power wire and a respective ground wire. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for providing power and transmitting signals comprising:
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electrically connecting via a first cable a first engine sensor to a vehicle ECU; electrically connecting via a second cable a second engine sensor to the first engine sensor; providing a first voltage to the first sensor via the first cable; providing the first voltage to the second sensor via the first cable, the first sensor and the second cable; transmitting signals between the first sensor and the ECU via the first cable; transmitting signals between the second sensor and the ECU via the first cable, the first sensor and the second cable; electrically connecting via a third cable a third engine sensor to the ECU; electrically connecting via a fourth cable a fourth engine sensor to the third engine sensor; providing a second voltage, which is different than the first voltage, to the third sensor via the third cable; providing the second voltage to the fourth sensor via the third cable, the third sensor and the fourth cable; transmitting signals between the third sensor and the ECU via the third cable; and transmitting signals between the fourth sensor and the ECU via the third cable, the third sensor and the fourth cable. - View Dependent Claims (20)
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Specification