相关实验视频

Updated: Jan 16, 2026

Improving the Combustion Performance of a Hybrid Rocket Engine using a Novel Fuel Grain with a Nested Helical Structure
07:58

Improving the Combustion Performance of a Hybrid Rocket Engine using a Novel Fuel Grain with a Nested Helical Structure

Published on: January 18, 2021

6.4K

一种实验方法,改变活塞几何结构,以优化柴油发动机性能和排放,使用优先级集群方法

Saad Alshammari1, Mohd Zaheen Khan2, Zeinebou Yahya3

  • 1Department of Mechanical and Industrial Engineering, College of Engineering, Majmaah Univeristy, 11952, Al Majmaah, Saudi Arabia.

Scientific reports
|September 29, 2025
PubMed
概括

硫化石墨烯 (SGR) 显著提升了生物柴油生产,通过提高转化过程,实现了94%的产量. 这种催化剂对可持续燃料开发有希望,优化柴油发动机的发动机性能和排放.

关键词:
生物燃料是一种生物燃料.这是一个柴油发动机.排放分析 排放分析能源效率 能源效率是指能源的使用效率.机器学习是机器学习.业绩表现 业绩表现 业绩表现表现

更多相关视频

A Rapid Method for Modeling a Variable Cycle Engine04:58

A Rapid Method for Modeling a Variable Cycle Engine

Published on: August 13, 2019

8.0K
Design and Optimization Strategies of a High-Performance Vented Box14:23

Design and Optimization Strategies of a High-Performance Vented Box

Published on: June 9, 2023

1.5K

相关概念视频

Otto and Diesel Cycle01:27

Otto and Diesel Cycle

An Otto engine is a four-stroke engine that uses a mixture of gasoline and air as the working fuel. The fuel is injected into the cylinder, and the piston is moved completely down so that the cylinder is at maximum volume. By moving the piston up, adiabatic compression takes place. The spark plug ignites the gasoline-air mixture, and the burning fuel adds heat to the system at a constant volume. The heated mixture expands adiabatically and gets further cooled by exhausting heat, and this cyclic...
3.5K
Internal Combustion Engine01:20

Internal Combustion Engine

The internal combustion engine is a heat engine that uses the byproducts of combustion as the working fluid instead of using a heat transfer medium to transfer heat. The combustion is done in a way that produces high-pressure combustion products that can be expanded through a turbine or piston to create work. Internal combustion engines can again be categorized into three kinds: (1) spark ignition gasoline engines, most commonly used in automobiles, (2) compression ignition diesel engines that...
2.6K
Sampling Plans01:23

Sampling Plans

Sampling is a crucial step in analytical chemistry, allowing researchers to collect representative data from a large population. Common sampling methods include random, judgmental, systematic, stratified, and cluster sampling.
Random sampling is a method where each member of the population has an equal chance of being selected for the sample. It involves selecting individuals randomly, often using random number generators or lottery-type methods. For example, when analyzing the properties of a...
896
Turnover Number and Catalytic Efficiency01:19

Turnover Number and Catalytic Efficiency

The turnover number of an enzyme is the maximum number of substrate molecules it can transform per unit time. Turnover numbers for most enzymes range from 1 to 1000 molecules per second. Catalase has the known highest turnover number, capable of converting up to 2.8×106 molecules of hydrogen peroxide into water and oxygen per second. Lysozyme has the lowest known turnover number of half a molecule per second.
Chymotrypsin is a pancreatic enzyme that breaks down proteins during digestion....
20.1K
Cluster Sampling Method01:20

Cluster Sampling Method

Appropriate sampling methods ensure that samples are drawn without bias and accurately represent the population. Because measuring the entire population in a study is not practical, researchers use samples to represent the population of interest.
To choose a cluster sample, divide the population into clusters (groups) and then randomly select some of the clusters. All the members from these clusters are in the cluster sample. For example, if you randomly sample four departments from your...
14.0K
Mechanical Efficiency of Real Machines01:14

Mechanical Efficiency of Real Machines

The mechanical efficiency of a machine is a fundamental concept that describes how effectively a machine can convert input work into output work. According to this concept, the efficiency of a machine is equal to the ratio of the output work to the input work. An ideal machine, meaning a machine that has no energy losses, has an efficiency of one. This implies that the input work and the output work are equal.
However, in reality, no machine can be truly ideal, and all of them experience some...
1.2K