Browse Topic: Fuel sensors
Automotives are provided with a lot of intelligence that monitors, controls, actuates, and diagnose the various aspects of vehicle functionalities. One of the critical parameters required to monitor is Vehicle fuel level. Fuel level in the vehicle is a key input for engine performance, drivability, and fuel level indication in Instrumentation cluster for customer. Most economic and reliable fuel level sensor is resistive sensor with float. The purpose of this paper is to address the wrong fuel level indication in Vehicle level. Wrong fuel level indication may be due to malfunction of Instrumentation cluster signal input or Fuel level sensor function. To verify this, Instrumentation cluster is tested with HIL system instead of real time Fuel level sensor. By configuring the HIL module to analogue resistance channel, cluster is tested for fuel level bar indication. Fuel level sensor is tested by Vehicle level fuel calibration and exact issue is simulated. The failed fuel level sensor is
This document provides a summary of names commonly used throughout the industry for aircraft fuel system components. It is a thesaurus intended to aid those not familiar with the lexicon of the industry
Most automotive fuel systems use a Fuel Delivery Module (FDM) with components to filter and pump gasoline at a specified pressure and flow rate from the fuel tank to the engine. The FDM uses a reservoir assembly to maintain a fuel supply at the pump inlet and support components such as pressure regulators and/or limiters, filters, level sensor, and the electrical and hydraulic connections that pass through the tank. Current systems predominantly use passive electrical components such as brush pumps and resistive fuel level sensors that are independently connected to a voltage supply and body control module, respectively. The high flow levels of these systems require high-power pumps that may operate continuously at maximum speed conditions. Some newer systems may employ a voltage controller to modulate the pump supply voltage to discrete speeds depending on projected engine demand, and provide some improvement in power consumption
This document is applicable to commercial and military aircraft fuel quantity indication systems. It is intended to give guidance for system design and installation. It describes key areas to be considered in the design of a modern fuel system, and builds upon experiences gained in the industry in the last 10 years
A flex fuel engine is capable of operating efficiently on any combination of gasoline and ethanol. However, an engine combustion strategy must adapt quickly to a change in ethanol concentration after a refueling event in order to achieve optimum engine combustion. Typical control systems rely on an exhaust gas oxygen sensor (lambda) to measure changes in oxygen concentration following combustion. This feedback control approach can take five to ten minutes to detect the fuel change and correct the combustion strategy. This relatively long lag time could result in suboptimal engine performance such as a loss of engine power, engine knocking, poor cold start performance, unburned hydrocarbons, and high pollutant emissions. To counter this shortcoming, an on-board flex fuel sensor (FFS) was developed to enable a feed-forward control strategy. The FFS may be installed inline between the fuel tank and fuel injector and measure the fuel prior to it reaching the injector. The FFS sensor
This document describes a process for testing the comprehension of symbols or icons. Although the process may be used to test any symbols or icons, it has been developed specifically for testing ITS active safety symbols or icons (e.g., collision avoidance), or other symbols or icons that reflect some in-vehicle ITS message or function (e.g., navigation, motorist services, infotainment). Within the process, well-defined criteria are used to identify the extent to which the perceived meaning matches the intended meaning for a representative sample of drivers. Though the process described below reflects a paper-and-pencil approach to conducting the testing, electronic means (i.e., conducted using a computer) can be used as well. The data or results from this process are analyzed to assess the drivers’ comprehension of the symbol or icon. These data will be used to provide guidance in the design of in-vehicle symbols or icons
This recommended practice provides a method for establishing the rated or advertised fuel capacity for a vehicle utilizing liquid fuel at atmospheric pressure. It applies to passenger cars, multi-purpose passenger vehicles and light duty trucks (10 000 lb (4536 kg) maximum GVW), (Ref. SAE J1100). It also includes a standardized procedure for creating a full tank when another test requires that condition as a starting point. It is intended as a guide toward standard practice and is subject to change to keep pace with experience and technical advances
Four new 2-cylinder 4-stroke concepts are displayed as design and fitted in vehicles. These four different concepts comprise a Modular Concept V2- and W3-cylinder a MotoGP / Superbike concept with 2 and 3 cylinders, a narrow angle V-engine and a Building Block System Commuter CVT engine. Each engine concept is designed to meet the different requirements of the four segments. Specific analysis and simulation concerning 1D thermodynamics, vehicle simulation and delivered performance and tractive force was done for each concept. The concepts are compared in the aspects of uniform rotation, inertia forces and moments, and the effect on performance by the pulse effects of the manifolded intake and exhaust systems. The Modular Concept contains an OHC engine with a wide range of displacements and commonality of many parts. Good versatility is obtained as the concepts can be applied for sport- or custom bikes. Also an advanced EMS with additional features is applied and a heated 3-way catalyst
The purpose of this SAE Recommended Practice is to provide an explanation of electrostatic charge phenomena as they relate to automotive fuel systems and how those phenomena should be handled if they develop. This document is limited to the group of components that are known as the fuel system and only those that handle liquid fuel in one of two situations: operation of the fuel delivery system and refueling of the vehicle. This is a collection of ideas and generalities that are summarized from literature and presentations, inferred from some laboratory experimentation and summarized from experiences within the automotive industry as interpreted by the Electrostatics Subcommittee of the SAE Fuel Lines and Fittings Standards Committee. Some of the discussions are simplified. If users of this document need some further technical information, experts should be consulted or the references cited here should be examined directly. In addition, a series of test procedures that may apply are
This SAE Recommended Practice defines a document for the format of messages and data that is of general value to modules on the data communications link. Included are field descriptions, size, scale, internal data representation, and position within a message. This document also describes guidelines for the frequency of and circumstances in which messages are transmitted. In order to promote compatibility among all aspects of electronic data used in heavy-duty applications, it is the intention of the Data Format Subcommittee (in conjunction with other industry groups) to develop recommended message formats for: a Vehicle and Component Information: This includes all information that pertains to the operation of the vehicle and its components (such as performance, maintenance, and diagnostic data). b Routing and Scheduling Information: Information related to the planned or actual route of the vehicle. It includes current vehicle location (for example, geographical coordinates) and
The Beechcraft Starship 1 is a completely new and exceptionally advanced airplane in many of its fundamental aspects. The development of this aircraft has presented a unique opportunity to apply advanced avionics architectural concepts. The system that evolved consists of an integrated array of over 70 electronic line replaceable units (LRU), organized to provide unprecedented levels of functional capability, fault tolerance, and configurability, as well as on-board diagnostic aids, and other features designed to enhance the safety of flight. The digital data communication network achieves total and efficient connectivity among all subsystems, including those aircraft systems which have not traditionally been regarded as part of the “avionics.” This includes engine and fuel sensors as well as over 100 discrete signals originating with the many nonavionic subsystems which the pilot must monitor. The connectivity is accomplished through use of a dual-dual set of data concentrators. This
This Aeronautical Standard covers two basic types of instruments as follows: Type I - Float Instruments Type II - Capacitance Instruments
This specification covers: Type I - Float Gages Type II - Capacitance Gages
Items per page:
50
1 – 33 of 33