摘要:
Procedure for the operation of an internal combustion engine, particularly a gasoline engine with direct gasoline injection and controlled self-ignition, whereby the internal combustion engine (1) comprises a combustion chamber (2), at least one intake valve (EV) and at least one exhaust valve (AV), whose opening times can be altered, and an ignitable gas mixture, which contains residual gas, is compressed in the combustion chamber (2) during a compression stroke (V), whereby the gas mixture self ignites during the compression stroke (V).During a load transfer from an initial load to a target load, the residual gas volume and/or the point of injection time is altered for at least one power stroke to an interim value other than the value assigned to the target load.
摘要:
Procedure for the transition of an internal combustion engine, particularly a gasoline engine with direct gasoline injection and with a partially variable valve-train assembly, from an initial mode of operation into a target mode of operation, whereby the initial mode of operation and the target mode of operation are either a mode of operation with an externally-supplied ignition or one with self-ignition. The procedure comprises the procedural steps: Adaptation of the operating parameters of the initial mode of operation to the required values for the target mode of operation in a map-based pilot control phase Changeover of the mode of operation after the map-based pilot control phase Closed-loop control of the operating parameters after the changeover.
摘要:
The invention relates to novel coated post-formable films, to surface-coating compositions for such films, to a combined method for curing the surface-coating compositions and for post-forming, as well as to moulded bodies produced from the coated films.
摘要:
A device and a method for controlling an internal combustion engine, where a first variable characterizing the pressure in the combustion chamber of at least one cylinder of the internal combustion engine is measured by at least one sensor. A second variable characterizing the energy released during the combustion is ascertained from the first variable. When a threshold value of the second variable is exceeded, a third variable characterizing the combustion process is detected.
摘要:
Members of the TGF-β superfamily control many physiologic and pathophysiologic processes in multiple tissues and signal via type II and type I receptor serine kinases. Type II activin receptors are promiscuous and known to bind 12 TGF-β ligands including activins, myostatin, BMPs and nodal. Methods are described for the screening and identification of antagonist for TGF-β superfamily members, in particular activin-A antagonist.
摘要:
The invention relates to new, low viscosity radiation-hardenable urethane acrylates prepared from oxalkylated polyols with 25 to 75 mole % of a polyol having a degree of oxalkylation between 3 and 5 and 75 to 25 mole % of a polyol having a degree of oxalkylation between 8 and 25, the resulting coatings having improved abrasion resistance, as well as their use as coating compositions, in particular for flooring materials.
摘要:
The present invention relates to a process for process for preparing a coating by a) applying to a porous and/or absorbent substrate a liquid coating composition containing at least one component having (meth)acryloyl groups and a dynamic viscosity of less than 2000 mPa.s and 0.1 to 10 wt. %, based on the non-volatile content of the coating composition, of an additive selected from polyamides, oligomeric fatty acid amides and polymeric fatty acid amides and b) polymerizing the composition with radiation. The present invention also relates to the resulting coated substrates and to the coating compositions used in the process.
摘要:
Components for transmitting ATM cells related to Internet data packets are additionally integrated in an ATM communications system for transmitting data and data packets packed in ATM cells for ATM communications networks which are formed by ATM communications systems. The complete integration of the Internet transmission function into ATM communications systems results in effective traffic and network management of ATM cells related to Internet data packets with a very low level of integration complexity.
摘要:
A thermal protection system suitable as a heat shield for a space vehicle includes a flexible insulation mat that is adhesively bonded onto the outer skin of the space vehicle, a cover layer made of at least one ply of a ceramic fiber composite material secured onto the insulation mat, and a coating of an inorganic material applied onto an outer surface of the ceramic cover layer. The cover layer is secured to the insulation mat by adhesive bonding, stitching with ceramic threads or the like, or by a snap fastener button connection. The ceramic fiber composite materials of the cover layer include inorganic fibers which are preferably oxides, carbides or mixtures thereof embedded in a matrix of the same compositional components, whereby the components can be selected appropriately depending on the requirements of the particular application. The overall thermal protection system remains flexible, lightweight, and highly effective for thermal shielding, so that it may be used not only on the relatively cooler portions of the space vehicle, but also on the most highly thermally loaded areas such as the nose and the leading edges of wings and the like.
摘要:
The present invention relates to compositions that may be cured under the action of UV radiation and contain A) 40 to 80 parts by weight of a polyester resin component containing one or more ethylenically unsaturated polyester resins prepared from a carboxylic acid component containing a 1,2-alkenyl dicarboxylic acid monodicyclopentenyl ester and fumaric acid, maleic acid and/or maleic anhydride and an alcohol component containing a dyhydric alcohol, B) 20 to 60 parts by weight of a copolymerizable monomer such as styrene and C) 0.1 to 10 parts by weight of a photoinitiator. The present invention also relates to coated substrates, in particular wood or imitation wood, prepared from these compositions at an application viscosity of less than 60 seconds measured at 23° C. in a DIN 4 cup to DIN 53211 under the action of UV radiation.