Automotive Cabin Filtration In-Vehicle Test Results

1994 ◽  
Author(s):  
Robert J. Hutter ◽  
Samuel E. Lee ◽  
Kenneth L. Rubow ◽  
Benjamin Y. H. Liu
Keyword(s):  
Test Results ◽  
Vehicle Test

In-Vehicle Test Results for Advanced Propulsion and Vehicle System Controls Using Connected and Automated Vehicle Information

2021 ◽  
Author(s):  
Shreshta Rajakumar Deshpande ◽  
Shobhit Gupta ◽  
Dennis Kibalama ◽  
Nicola Pivaro ◽  
Marcello Canova ◽  
...  
Keyword(s):  
Test Results ◽  
Automated Vehicle ◽  
Vehicle System ◽  
Vehicle Test ◽  
Vehicle Information

Utilization of ADAS for Improving Idle Stop-and-Go Control

2018 ◽  
Author(s):  
Kwangwoo Jeong ◽  
Hoon Lee ◽  
Jaihyun Lee ◽  
Sanghoon Yoo ◽  
Byungho Lee ◽  
...  
Keyword(s):  
Control Algorithm ◽  
Traffic Information ◽  
Test Results ◽  
Driver Assistance ◽  
Control Logic ◽  
Traffic Sign ◽  
Sign Recognition ◽  
Stop Sign ◽  
Stop And Go ◽  
Vehicle Test

Idle Stop and Go (ISG), also known as Automatic Engine Stop/Start, has been widely implemented in production vehicles as one of the “Eco” functions that save fuel, and the application has been promoted to meet stringent fuel economy regulations throughout the world. However, the vibration and the hesitation caused by engine stop and restart often discourage the usage. Because a conventional ISG system usually restarts the engine when it sees the brake pedal release, the driver may perceive a delay in immediate vehicle launch. Furthermore, there are some driving conditions where engine on/off is undesirable or unnecessary. A quick stop-and-go situation such as making a complete stop at a stop sign is one of the conditions where ISG would be inappropriate, and in those cases, ISG may irritate the driver or even end up increasing fuel consumption with too frequent engine stop/start. In order to mitigate aforementioned issues, a utilization of Advanced Driver Assistance System (ADAS) is proposed. With the surrounding traffic information obtained from the ADAS module, ISG control algorithm is able to determine when to turn on or off the engine prior to driver’s input. The applications demonstrated in this paper include the following usage examples: The ISG control logic monitors the movement of the vehicle in front and restarts the engine out of ISG mode before brake release, which eliminates the delay in the following vehicle launch. By employing traffic sign recognition and vehicle location info, the control logic is also able to inhibit engine off when the vehicle stops at stop signs which will avoid unwanted ISG activation. In this paper, the advanced ISG control logic is introduced, and the real-world vehicle test results are provided with the description of prototype vehicle configuration.

The new method of initial calibration with the wheel force transducer

Sensor Review ◽  
2014 ◽  
Vol 34 (1) ◽  
pp. 98-109 ◽  
Author(s):  
Dong Wang ◽  
Guoyu Lin ◽  
Wei-gong Zhang ◽  
Ning Zhao ◽  
Han Pang
Keyword(s):  
Force Transducer ◽  
New Method ◽  
Test Results ◽  
Content Type ◽  
Initial Values ◽  
Data Process ◽  
Force Transducers ◽  
Value Determination ◽  
Vehicle Test ◽  
Real Vehicle

Purpose – One of the major shortcomings in the data process of the traditional wheel force transducers (WFTs) is the theoretical errors of initial value determination. A new method to identify the initial values of the WFT for the solution of this problem is proposed in this paper. The paper aims to discuss these issues. Design/methodology/approach – With this method, the initial values can be obtained by equations which are established based on multiple stops on horizontal road. Findings – The calibration and contrast tests on the MTS calibration platform illustrate the better performance with the new method. Moreover, the real vehicle test confirms the effectiveness in practice. Originality/value – The test results show that the new method of initial calibration has an advanced performance compared to the traditional one. In addition, it is effective in the brake test with a real vehicle.

Systems Engineering Approach to Gas Turbine Marine Propulsion

1970 ◽  
Author(s):  
T. B. Lauriat
Keyword(s):  
Gas Turbine ◽  
Systems Engineering ◽  
Test Results ◽  
Propulsion Systems ◽  
Part List ◽  
Engineering Approach ◽  
Marine Propulsion ◽  
Engineering Team ◽  
Vehicle Test ◽  
Marine Propulsion System

This paper includes a description of the Systems Engineering approach to two representative marine propulsion systems utilizing gas turbine power. One approach deals with the Vosper VT-1 Hovercraft Propulsion engine manufacture and installation, the second deals with the much more detailed and sophisticated efforts required in producing and installing a complete marine propulsion system for a Navy Riverine assault craft. Preliminary scheduling to meet delivery dates, methods of part list procedures, testing philosophy, and methods of shipment are discussed, as well as customer liaison. The efforts of the Systems Engineering team are discussed in both cases pointing up the need for extremely close liaison in early vessel design stages to facilitate proper engine installation in the craft. Problems as they relate to earlier planning are included. The summary includes some actual vehicle test results.

scholarly journals Influence of Test Cycles on Energy Consumption Test of Electric Vehicles

2021 ◽  
Vol 241 ◽  
pp. 02004
Author(s):  
Yu Liu ◽  
Kunqi Ma ◽  
Hanzhengnan Yu ◽  
Jingyuan Li ◽  
Xiaopan An
Keyword(s):  
Energy Consumption ◽  
Electric Vehicles ◽  
Energy Demand ◽  
Test Results ◽  
Test Cycle ◽  
Light Duty ◽  
Actual Use ◽  
Light Duty Vehicle ◽  
Simulation Results ◽  
Vehicle Test

In order to verify the necessity of the application of China Automotive Test Cycle which is constructed through actual driving data in china of more than 55 million kilometers in the energy consumption test of electric vehicles in China, this paper compares the characteristics of New European Test Cycle (NEDC), World-wide harmonized Light duty Test Cycle (WLTC) and China light-duty vehicle test cycle for passenger car(CLTC-P), and analyzes the differences of vehicle energy demand under different test cycles from theoretical and simulation point, simulation results show that the endurance mileage is longest and the energy recovery strategy is more effective under CLTC-P cycle. Finally, four types of vehicles are selected to carry out the endurance mileage test under these three test cycles. The test results are consistent with the simulation results. Therefore, in order to make the test results of electric vehicle energy consumption closer to the actual use of our country, CLTC-P should be selected to replace NEDC and WLTC cycle.

scholarly journals Analysis of fuel consumption of China light duty vehicle test cycle for passenger car(CLTC-P)

2021 ◽  
Vol 268 ◽  
pp. 01029
Author(s):  
Meng Zhou ◽  
Chongzhi Zhong ◽  
Jingyuan Li
Keyword(s):  
Fuel Consumption ◽  
Air Conditioning ◽  
Test Results ◽  
Test Cycle ◽  
Test Procedures ◽  
Light Duty ◽  
Certification Test ◽  
Light Duty Vehicle ◽  
Vehicle Test ◽  
P Cycle

Through the fuel consumption test of several listed vehicles in China, the basic fuel consumption results of cold start under CLTC-P cycle, the fuel consumption results of vehicles under the condition of air conditioning on, and the fuel consumption results of vehicles under the condition of air conditioning off are measured. At the same time, the differences between NEDC cycle and CLTC-P cycle in China's fuel consumption certification test are compared, and the results of fuel consumption test are combined The fuel consumption test results under CLTC-P cycle are higher than those under NEDC cycle, and the fuel consumption test procedures under Chinese condition are more in line with the actual driving situation in China.

Comparative Testing of Virtual Environment Display Devices for Conceptual Design Reviews

1999 ◽  
Author(s):  
Grace M. Bochenek ◽  
James M. Ragusa
Keyword(s):  
Virtual Environment ◽  
Conceptual Design ◽  
Review Process ◽  
Life Cycles ◽  
Test Results ◽  
Comparative Testing ◽  
Design Review ◽  
Display Devices ◽  
Military Vehicle ◽  
Vehicle Test

Abstract The high cost of designing and prototyping new products and systems, coupled with the need to shrink overall life cycles, requires that organizations become more effective and efficient in managing these processes. To this end, empirical testing of various virtual environment (VE) devices was conducted to evaluate their use during a conceptual design review of a new military vehicle. Test results and analysis indicated that there were significant advantages of some VE technologies during certain phases of the review process, but no single device fully satisfied all individual and team needs. For that reason, a combined technology approach is recommended.

Control of Multi-Plate Torque Converter Clutch With an Aggressive Schedule in an Automatic Transmission

2007 ◽  
Author(s):  
Chunhao Joseph Lee ◽  
Farzad Samie ◽  
Kumaraswamy Hebbale ◽  
Chi-Kuan Kao ◽  
Paul Otanez
Keyword(s):  
Control Algorithm ◽  
Hardware Implementation ◽  
Automatic Transmission ◽  
Torque Converter ◽  
Gear Train ◽  
Test Results ◽  
Environmental Pressures ◽  
Single Plate ◽  
Fluid Coupling ◽  
Vehicle Test

In an automatic transmission, torque converter is the main device that transmits torque from the engine to the gear train. An open converter relies on fluid coupling to transmit torque, which causes energy loss and also causes engine to run at a higher speed. A single-plate locking or slipping clutch has been used between the pump and turbine of a torque converter so that the slip across the converter can be reduced to a level that increases the efficiency of the converter. This slip control, called Electronically Controlled Capacity Clutch (ECCC), also provides necessary damping to the driveline to ensure pleasant driveability similar to an open converter. New legislative and environmental pressures on car makers to improve fuel economy have resulted in aggressive use of ECCC in their automobiles. However, the controllability and heat capacity of the single-plate clutch limit the ability to engage the torque converter clutch (TCC) more aggressively (in earlier gears and lower vehicle speeds). At GM, an experimental multi-plate toque converter was designed, fabricated, and implemented in a RWD transmission. It was demonstrated in a 6-speed vehicle that driving pleaseability can be maintained with a more aggressive ECCC strategy. For this purpose, a control algorithm was developed to control the slip speed of the clutch and allow early ECCC starting in second gear. This paper describes in detail hardware implementation of the multi-plate clutch, development and implementation of the aggressive ECCC control strategy, and some vehicle test results.

A Diagonally Braked Vehicle for the Investigation of Tire Traction

1973 ◽  
Vol 1 (2) ◽  
pp. 138-151 ◽  
Author(s):  
T. J. Yager
Keyword(s):  
Surface Finish ◽  
Surface Characteristics ◽  
Future Application ◽  
Test Results ◽  
Test Technique ◽  
Pneumatic Tire ◽  
Vehicle Test

Abstract The development and application of a diagonally braked vehicle test technique has yielded insights into factors known to affect pneumatic tire traction such as certain tire parameters (including size, construction, and tread pattern) and pavement properties (including surface finish and the type and extent of contamination). This paper reviews the effects of tire and surface characteristics on available traction, discusses how the test results could be applied to estimate aircraft stopping performance under low traction conditions, and concludes with comments relative to possible future application of the diagonally braked vehicle.

Locomotive Crash Energy Management Coupling Tests Evaluation and Vehicle-to-Vehicle Test Preparation

2019 ◽  
Author(s):  
Patricia Llana ◽  
Karina Jacobsen ◽  
Richard Stringfellow
Keyword(s):  
Energy Management ◽  
New Technologies ◽  
Test Preparation ◽  
Performance Comparison ◽  
Analytical Models ◽  
Test Results ◽  
Test Procedures ◽  
Vehicle To Vehicle ◽  
Wide Range ◽  
Vehicle Test

Research to develop new technologies for increasing the safety of passengers and crew in rail equipment is being directed by the Federal Railroad Administration’s (FRA’s) Office of Research, Development, and Technology. Crash energy management (CEM) components which can be integrated into the end structure of a locomotive have been developed: a push-back coupler and a deformable anti-climber. These components are designed to inhibit override in the event of a collision. The results of vehicle-to-vehicle override, where the strong underframe of one vehicle, typically a locomotive, impacts the weaker superstructure of the other vehicle, can be devastating. These components are designed to improve crashworthiness for equipped locomotives in a wide range of potential collisions, including collisions with conventional locomotives, conventional cab cars, and freight equipment. Concerns have been raised in discussions with industry that push-back couplers may trigger prematurely, and may require replacement due to unintentional activation as a result of loads experienced during service and coupling. Push-back couplers (PBCs) are designed with trigger loads meant to exceed the expected maximum service and coupling loads experienced by conventional couplers. Analytical models are typically used to determine these trigger loads. Two sets of coupling tests have been conducted that validate these models, one with a conventional locomotive equipped with conventional draft gear and coupler, and another with a conventional locomotive retrofit with a PBC. These tests allow a performance comparison of a conventional locomotive with a CEM-equipped locomotive during coupling, as well as confirmation that the PBC does not trigger at speeds below typical coupling speeds. In addition to the two sets of coupling tests, car-to-car compatibility tests of CEM-equipped locomotives, as well as a train-to-train test are also planned. This arrangement of tests allows for evaluation of the CEM-equipped locomotive performance, as well as comparison of measured with simulated locomotive performance in the car-to-car and train-to-train tests. The conventional coupling tests and the CEM coupling tests have been conducted, the results of which compared favorably with their pre-test predictions. In the CEM coupling tests, the PBC triggered at a speed well above typical coupling speeds. This paper provides a comparison of the conventional coupling test results with the CEM coupling test results. The next test in the research program is a vehicle-to-vehicle impact test. This paper describes the test preparation, test requirements, and analysis predictions for the vehicle-to-vehicle test. The equipment to be tested, track conditions, test procedures, and measurements to be made are described. A model for predicting the behavior of the impacting vehicles and the CEM system has been developed, along with preliminary predictions for the vehicle-to-vehicle test.

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