Fuel injection device
First Claim
1. A fuel injection device, comprising:
- a valve body having a free end exposed to a combustion chamber defined in an engine main body and a base end located outside of the engine main body;
a sensor supported at the free end of the valve body to detect a state of the combustion chamber;
an actuator received in the valve body;
a sensor signal transmitting member extending from the sensor to the base end of the valve body;
a drive signal transmitting member extending from the actuator; and
a first shield member interposed between the sensor signal transmitting member and the drive signal transmitting member, the first shield member having an electro-conductive property and being grounded.
3 Assignments
0 Petitions
Accused Products
Abstract
In a fuel injection device having a sensor for detecting a state in the combustion chamber in a free end thereof, the noises that may be generated in the sensor signal transmitting member for transmitting the sensor signal are minimized. The fuel injection device comprises: a valve body (33) having a free end exposed to the combustion chamber (7) defined in the engine main body (3) and a base end located outside of the engine main body; a sensor (38) supported at a free end of the valve body to detect a state of the combustion chamber; an actuator (37) received in the valve body; a sensor signal transmitting member (91, 128) extending from the sensor to the base end of the valve body; a drive signal transmitting member (83, 84) extending from the actuator; and a first shield member (133) interposed between the sensor signal transmitting member and the drive signal transmitting member, the first shield member having an electro-conductive property and being grounded.
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Citations
7 Claims
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1. A fuel injection device, comprising:
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a valve body having a free end exposed to a combustion chamber defined in an engine main body and a base end located outside of the engine main body; a sensor supported at the free end of the valve body to detect a state of the combustion chamber; an actuator received in the valve body; a sensor signal transmitting member extending from the sensor to the base end of the valve body; a drive signal transmitting member extending from the actuator; and a first shield member interposed between the sensor signal transmitting member and the drive signal transmitting member, the first shield member having an electro-conductive property and being grounded. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification