Pressure gauge for combustion chamber of an internal combustion engine
AssigneeSiemens VDO Automotive Corporation
InventorYves Dordet
Life of this patent
Estimating the term…
Abstract
A glow plug (20) for an internal combustion engine (110) essentially includes: a body (27) intended to be fixed to the engine, and a core (29) extending in a direction of elongation (11), connected to the body and intended to extend inside the combustion chamber (9) of the engine, measurement elements (200, 55, 65) intended to determine the pressure internal to the combustion chamber (9) through the displacement of the core (29) under the effect of pressure, characterized in that the glow plug is equipped with elements (50, 60) that make it possible to quantify the displacement of the core with respect to the cylinder head (5) of the engine on which the glow plug is installed.
Claims13
A glow plug (20) for an internal combustion engine (110) essentially comprising:
- a body (27) intended to be fixed to the engine, and
- a core (29) extending in a direction of elongation (11), connected to the body and intended to extend inside the combustion chamber (9) of the engine, and
- measurement means (200, 55, 65) intended to determine the pressure internal to the combustion chamber (9) through the displacement of the core (29) under the effect of said pressure,
- characterized in that the glow plug is equipped with means (50, 60) that make it possible to quantify the displacement of the core with respect to the cylinder head (5) of the engine on which the glow plug is installed.
A vehicle equipped with a propulsion unit (1) comprising:
- a glow plug (20) as claimed in any one of the preceding claims,
- an internal combustion engine (110) having a combustion chamber (9) and on which said glow plug is mounted,
- fuel-injection means (130) for injecting fuel into the combustion chamber of the engine,
- processing means (4) for processing the information acquired by the measurement means,
- in which the processing means (4) control the injection means (130) on the basis of the information acquired by the measurement means (200, 55, 65) in the course of one combustion cycle.
Dependencies are inferred from the claim text.