摘要:
A pneumatic tire for a vehicle comprises a carcass ply extending between two bead regions and passing through a tread region which extends between two tread contact edges, a tread region reinforcing breaker radially outwards of the carcass in the tread region and a ground contacting tread surface curved in the axial direction wherein the outer surface of the widest breaker ply when the tire is mounted in its design wheel rim and normally inflated has a curved shape in the tire axial direction and has a continuously decreasing radius from a point B to the adjacent edge of the breaker wherein point B is at a distance SP in the axial direction from the tire circumferential centerline equal to 20% of the distance from the tread center to the adjacent tread contact edge.
摘要:
A pneumatic tire for a vehicle comprises a carcass ply extending between two bead regions and passing through a tread region which extends between two tread contact edges, a tread region reinforcing breaker radially outwards of the carcass in the tread region and a ground contacting tread surface curved in the axial direction wherein the curvature of the outer tread surface when the tire is mounted on its design wheel rim and normally inflated has a continuously decreasing radius from a point P which is at a distance SP in the axial direction from the tire circumferential center line equal to 20% of the distance from the tread center to the adjacent tread contact edge.
摘要:
A heated fuel injector includes a heated body, liquid fuel flowing through a fuel passage within the body, and a member that increases heat transfer from the heated body to the fuel within the fuel passage. The thermal efficiency of the fuel injector is increased separately or in combination by diverting the fuel flow along an inner circumferential contour of the heated body, by limiting the volume of fuel bypassing the heated inner surface of the body, by redirecting heat from the body to unheated portions of the fuel flow field within the fuel passage, and by increasing the available contact surface area for heat transfer. Improved heat transfer from the heated body to the fuel is achieved by integrating features that increase the contact surface area into the inside surface of the body or by positioning an insulating or a thermally conductive spacer within the fuel passage.
摘要:
A fuel injector for heating fuel to be injected into an internal combustion engine. A cylindrical barrel extends between a solenoid and an injection tip for passage of fuel. The outer surface of the barrel supports a suitable circuit pattern formed of an electrically resistive material for generating heat which is passed through the wall of the barrel to warm the fuel which may be stationary or flowing. The electrically resistive material has a positive thermal coefficient, permitting voltage to be applied continuously across the heater causing a current to flow through the heater, the current being inversely proportional to the temperature of the heater. Thus, the heater is self-regulating, the current automatically increasing under cold conditions and diminishing as the fuel injector warms up after starting of the engine. Desirably, the heater is outside both the engine firing chamber and the flow path of the fuel.
摘要:
Disclosed is a new torus switch with low latency performance improves torus network connection time by trying multipaths in one single high speed operation. This multipath approach can be directed at establishing a connection between two specific nodes over various alternate routes simultaneously. If only one route is available, the multipath approach will find that path instantaneously and establish the desired connection with minimal latency. If several links are available, the multipath method establishes the desired connection over only one of the available links and leaves the other options free to be used by other connections. In addition, routing at intermediate torus network stages improves over the wormhole approach.
摘要:
Embodiments of a heat transfer apparatus, and related methods, involve at least one boundary wall defining a first flow path through a neck portion, a first heat source external to and in thermal communication with the boundary wall, and a working fluid (e.g., a first fluid component with a second fluid component entrained therein). The neck portion may be shaped such that at least a portion of the second fluid component impinges upon at least a portion of the boundary wall as the working fluid flows therethrough, whereby heat is transferred from the first heat source to the working fluid through the boundary wall.
摘要:
Embodiments of a heat transfer apparatus, and related methods, involve a first flow path through at least one neck portion defined by at least one boundary wall, a first heat source external to and in thermal communication with the at least one boundary wall, an inflow portion in fluid communication with the first flow path, an outflow portion in fluid communication with the first flow path, and a drive system for driving a first fluid through the first flow path, whereby heat is transferred from the first heat source to the first fluid as it flows through the first flow path.
摘要:
A heated fuel injector includes a heated body, liquid fuel flowing through a fuel passage within the body, and a member that increases heat transfer from the heated body to the fuel within the fuel passage. The thermal efficiency of the fuel injector is increased separately or in combination by diverting the fuel flow along an inner circumferential contour of the heated body, by limiting the volume of fuel bypassing the heated inner surface of the body, by redirecting heat from the body to unheated portions of the fuel flow field within the fuel passage, and by increasing the available contact surface area for heat transfer. Improved heat transfer from the heated body to the fuel is achieved by integrating features that increase the contact surface area into the inside surface of the body or by positioning an insulating or a thermally conductive spacer within the fuel passage.
摘要:
Embodiments of a heat transfer apparatus, and related methods, involve a radial array of blades including a plurality of blades arranged about a central portion defining an entrance flow path, the plurality of blades defining a first flow path therebetween, a first heat source in thermal communication with the blades, and a drive system for driving a first fluid into the central portion through the entrance flow path and out through the first flow path between adjacent blades whereby heat is transferred from the first heat source to the first fluid flowing within the first flow path.
摘要:
Heat pumps move heat from a source to a warmer sink, with Bernoulli heat pumps accomplishing this movement by reducing the temperature in a portion of the generally-warmer heat-sink flow. Heat flows spontaneously from the generally cooler heat-source flow into the locally cold portion of the heat-sink flow, which is the neck of a Venturi. The temperature reduction results from the Bernoulli conversion of random gas-particle motion (temperature and pressure) into directed motion (flow). This invention is a Bernoulli heat pump in which the heat transfer into the Venturi neck exploits unusual thermodynamic transport properties of rare-gases. Rare gases, especially mixtures of them, possess unusually small Prandtl numbers and thereby facilitate the diffusion of random particle motion (heat) relative to the diffusion of directed particle motion (viscosity), viscous friction being responsible for most of the power consumed by a Bernoulli heat pump.