Cylinder head assembly
AssigneeDr. Ing. h.c.F. Porsche Aktiengesellschaft
InventorsJohannes Wuest, Maximilian Fischer
Life of this patent
Estimating the term…
Abstract
A cylinder head assembly for an internal combustion engine has a housing (12) in which a plurality of elements (18, 44) are arranged. An optical duct (24) is formed in the housing (12) and is assigned to at least one of the elements (18). The optical duct (24) is assigned an infrared detector (28) that is designed to detect infrared radiation (30) from the at least one element (18) through the optical duct (24) to determine a temperature (T) of the at least one element (18).
Claims11
A cylinder head assembly for an internal combustion engine, having:
- a housing in which plural structural elements are arranged,
- an optical duct having a first end open into the housing, a second end external of the housing and an axis extending between the ends, the axis being aligned with at least one of the elements,
- a glass element mounted in the optical duct between the ends, the glass element being configured to seal areas of the optical duct between the glass element and the second end of the optical duct from the housing, the glass element being transparent to infrared radiation,
- an optical waveguide mounted at the second end of the optical duct and aligned to receive infrared radiation from the element that is transmitted through the glass element during operation of the internal combustion engine,
- at least one infrared detector designed to receive infrared radiation from the optical waveguide and to detect infrared radiation from the at least one element through the optical duct and through the glass fiber, and
- a control unit contacted to the at least one infrared detector and operative to determine a temperature of the at least one structural element based on the infrared radiation.
A method for measuring a temperature of a structural component of a cylinder head assembly of an internal combustion engine during operation of the internal combustion, comprising:
- detecting infrared radiation emitted from the structural component of the cylinder head assembly and transmitted through an optical duct in a housing of the cylinder head assembly during operation of the internal combustion engine, and determining the temperature of the element on the basis of the infrared radiation.
Dependencies are inferred from the claim text.