DEVICE FOR DETECTING SPEED OF A ROTATABLE ELEMENT, METHOD AND VEHICLE
First Claim
1. A device for detecting and monitoring crank shaft rotary speed and position in a four stroke engine, said device comprising:
- a first and a second sensor are arranged to sense passage of reference marks on a rotatable element or elements, whereinthe first sensor is a high precision sensor which is arranged to sense passage of reference marks on a crank shaft flywheel of the engine, andthe second sensor is a low speed sensor which is arranged to sense passage of reference marks on the crank shaft flywheel or reference marks or a wheel being associated with a cam shaft of the engine.
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Accused Products
Abstract
A device for detecting and monitoring crank shaft rotary speed and position in a four stroke engine, wherein a first and a second sensor are arranged to sense passage of reference marks on a rotatable element or elements. The first sensor is a high precision sensor which is arranged to sense passage of reference marks on a crank shaft flywheel of the engine, and the second sensor is a low speed sensor which is arranged to sense passage of reference marks on the crank shaft flywheel or reference marks or a wheel being associated with a cam shaft of the engine. The invention also concerns a method and a vehicle.
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Citations
19 Claims
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1. A device for detecting and monitoring crank shaft rotary speed and position in a four stroke engine, said device comprising:
a first and a second sensor are arranged to sense passage of reference marks on a rotatable element or elements, wherein the first sensor is a high precision sensor which is arranged to sense passage of reference marks on a crank shaft flywheel of the engine, and the second sensor is a low speed sensor which is arranged to sense passage of reference marks on the crank shaft flywheel or reference marks or a wheel being associated with a cam shaft of the engine. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for detecting and monitoring crank shaft position in a four stroke engine, wherein a first and a second sensor senses passage of reference marks on a rotatable element or elements, wherein
the first sensor being a high precision sensor senses passage of reference marks on a crank shaft flywheel of the engine, and the second sensor being a low speed sensor senses passage of reference marks on the crank shaft flywheel or reference marks on a wheel being associated with a cam shaft of the engine.
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14. A vehicle comprising a device for detecting and monitoring crank shaft rotary speed and position in a four stroke engine, said device comprising:
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a first and a second sensor are arranged to sense passage of reference marks on a rotatable element or elements, wherein the first sensor is a high precision sensor which is arranged to sense passage of reference marks on a crank shaft flywheel of the engine, and the second sensor is a low speed sensor which is arranged to sense passage of reference marks on the crank shaft flywheel or reference marks or a wheel being associated with a cam shaft of the engine. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification