Topic
Versa
About: Versa is a research topic. Over the lifetime, 532 publications have been published within this topic receiving 2478 citations.
Papers published on a yearly basis
1 / 2
Papers
Patent•
31 Aug 1992TL;DR: In this article, a method for determining the storage capacity of a catalytic converter of an internal combustion engine with the aid of a first signal from an oxygen-indicating first probe mounted forward of the catalytic converters and a second signal from a second probe mounted rearward of the converters is presented.
Abstract: The invention is directed to a method for determining the storage capacity of a catalytic converter of an internal combustion engine with the aid of a first signal from an oxygen-indicating first probe mounted forward of the catalytic converter and a second signal from an oxygen-indicating second probe mounted rearward of the catalytic converter. The first and second signals show the change from rich to lean and vice versa and the method includes the steps of: determining the storage capacity as a quantity proportional to the time-dependent integral of an integration variable; starting the integration at a time point at which said first signal changes from rich to lean or vice versa; and, ending the integration after a time interval. The method does not need a special test operation of the engine to determine the storage capacity of the catalytic converter. Instead, the method can be carried out in any steady-state operating condition for which the probe rearward of the catalytic converter regularly indicates jumps from rich to lean and vice versa. The invention is also directed to an arrangement for carrying out the invention.
87 citations
Patent•
27 Nov 2002
TL;DR: In this article, a flow passageway is constructed within an anchor 72 and for allowing passage of the fluid therethrough, there are provided a passagway portion 111 which is disposed along the axial direction and another passageways portion 112 which crosses the axially direction.
Abstract: To effectively prevent uneven wear of a moving mover 70 and to stabilize the control characteristics by a valve. Rotation force is exerted to the mover 70 by the fluid flowing from the first chamber to the second chamber, or vice versa, which are formed at the opposite ends of the mover 70. With respect to a flow passageway 110 formed within an anchor 72 and for allowing passage of the fluid therethrough, there are provided a passageway portion 111 which is disposed along the axial direction and another passageway portion 112 which crosses the axial direction. By this, rotation force is generated at the time the fluid passes from the former passageway portion 111 to the latter passageway portion 112 (or vice versa) which crosses the axial direction.
58 citations
Patent•
18 May 1959
43 citations
40 citations
40 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2026 | 1 |
| 2025 | 61 |
| 2024 | 78 |
| 2023 | 70 |
| 2022 | 83 |
| 2021 | 13 |