The basic variables of fuel economy are compared among some truck types manufactured by Mitsubishi Motors Corporation, and their contribution on fuel consumption is discussed.As for heavy duty trucks, whose fuel economy is the prime concern of all fleet operators, the design improvements of engine fuel performance, driveline power losses, rolling resistance of Lires, vehicle air resistance and curve resistance are described, and their influences on fuel economy are discussed along with test data and calculations.In addition to these parameters, conditions of the vehicle operation such as vehicle speed and payload are recognized to have a great influence on fuel economy of trucks.
Simple accurate arithmetic rules have been developed to calculate the internal rate of return on the incremental investment for similar vehicles using LPG or a diesel power plant. Inflation, discounting of future benefits and the different taxation provisions for commercial and private owners are considered. Only estimates of the extra capital cost ($) annual distance ('000 km) and savings ($/1000km) are required to calculate the internal rate of return. For a three year payback on a commercial vehicle the annual saving must be 47% of the extra capital cost to give an 8% internal rate of return. Above the breakeven distance extra savings increase the IRR by 10%/$100 for commercial vehicles compared to 20%/$100 for a private owner
Ordinary aluminum alloy diecasting material (abbreviated to ADC, below) contains much air, so that when it is welded, blowhole occurs. Therefore, it is thought to be difficult to weld it.Upon this, through improvement of ordinary diecasting method and development of welding technique, as the first step we have succeeded in mass production of automobile parts by combining ADC and aluminum alloy expanded material.
The deactivation process of automotive catalysts by lead and phosphoruos were studied. The accelerated poisoning test were performed. The activity evaluation and characterisation of poisoned pellet oxidation catalysts showed the following origin of poisoning deactivations. Lead interacts with active materials and phosphorus covers over catalysts to reduce these catalytic performance. In the case of phosphorus and lead co-existence, the activity decreases rapidly because leadphosphate plugges pores of the support. In monolithic catalysts, highly axial distributions of poisons was obserbed. This characteristic distribution is advantageous for the durability of the catalyst.
Murphy & Harrison, Inc. Claremont, CA-Robin T. Harrison
by IATO in Indonesia
The motorcycle sidestand is a nearly universal method of allowing a motorcycle rider to park his vehicle unattended easily. If this stand is in the “park” position while the motorcycle is ridden through a left turn, a serious safety hazard exists. This paper presents observations made during the investigation of several motorcycle accidents attributable to the sidestand, over a five year period.
VDO Instruments Australia Pty. Ltd.-Alan E. Cheale
by IATO in Indonesia
Early in 1980's Japanese vehicles appeared on the world and Australian market with electronic instrumentation.This paper covers the design and development of the extremely sophisticated instrumentation developed for the local manufacturers, and the level of technology achieved to produce instrumentation comprising of both analogue and digital presentation, combined triple display tripcomputer, alpha-numerical message centre, and system monitoring.These designs have in many ways outstripped their American and Japanese counter parts and are among the most advanced in the world today
Dept. of Mechanical Engineering University of Queensland St. Lucia-K. J. Bullock
by IATO in Indonesia
The utilisation of a hybrid vehicle concept enables the vehicle to be designed for specific traffic situations. Automobiles and medium to light commercial vehicles operate predominantly in suburban traffic where stop/start driving situations use large quantities of fuel because of the continuous conversion of engine power to kinetic energy and its subsequent absorption in the braking system. In addition, most vehicles operated in the suburban environment are powered by spark ignition engines. Thus energy storage or a continuously variable transmission would enable the engine to be operated at or near the peak efficiency, so increasing the fuel economy of the vehicle significantly.At the other end of the spectrum of operating conditions, i.e. highway speed driving, there is little to be gained by carrying energy storage elements on automobiles and buses. However with the advent of very low drag, articulated vehicles, energy storage on a 40 tonne semi-trailer, to help supply some potential energy for hill climbing and to absorb the kinetic energy on downhill running, is an attractive proposition.The paper describes the context in which…
Nissan Diesel Motor Co., Ltd.-Y. Yamada, Y. Watanabe
by IATO in Indonesia
To analyze truck ride comfort, the authors developed a relatively simple simulation model in 16 degree-of-freedom. As a result of studying important truck structural features, such as friction of leaf springs, bending stiffness of a frame, etc., calculation results of a transfer function response analysis agreed fairly well with measured data. As means for ensuring better ride comfort, NISSAN DIESEL developed a floating cab suspension system. To optimize the specification of the system, we utilized this analytical method effectively.
A new model of 4 × 2 semi-trailer tractor was introduced to the Japanese truck market from HINO MOTORS last year, which has improved riding comfort and remarkable features for trailer connecting/disconnecting operations.This new model has two typical methods of comfortable ride, those are full-floating cab mount system and air ride suspension for the rear axle.Since the analysis of tractor vibrations and the vehicle height control system of this model have given satisfactory results, and their outline is described here.
Sorry, this document is already saved to a project folder.
Share this content via social media.
Share Via Email
Email sent successfully!
Use this modal to save a search.
The current search and criteria have already been saved. Please modify your criteria to save as a new search.
Request Sent successfully!
Search Tips: Search Operators:AND, OR, NOT; Wild Cards; Using Quotes
SAE MOBILUS® Search Tips
Please note: All terms not contained within quotes, will be evaluated using the OR operator. This means that your search results will contain all results that contain ANY of the entered terms.
AND, OR, NOT
SAE MOBILUS supports the use of the AND, OR and NOT BOOLEAN operators ONLY function with the Advanced Search.
Using the asterisk, ( * ) allows you to search for a partial word. For example, entering a keyword search of aero* will search for any word beginning with aero.
Using the question mark, ( ? ) allows you to search for a word with a single character wildcard. For example, searching for t?re would match both tire and tyre
Words in double quotes " " are treated as a phrase. Conducting a search for "heat model" will return all results in which the exact phrase "heat model" is found, while "heat modeling" would NOT be included.
A term combined with a phrase will be joined with an OR operator.
Searching for Standards
When searching for a standard please use the entire Document Number assigned, which includes the abbreviation. A space can be used, or omitted between the abbreviation and number.