Robert Bosch LLC is celebrating the 40th anniversary of its invention
of the automotive oxygen sensor and is marking the production of its one
billionth oxygen sensor.
An integral part of today’s sophisticated vehicles, automotive oxygen
sensors are now a standard feature on all gasoline and most diesel
engines worldwide. No other vehicle component stands for “clean driving”
as much as the automotive oxygen sensor does, keeping the fuel system
running efficiently to protect the environment from harmful emissions
while helping to save fuel cost, according to Bosch.
“Since pioneering this technology four decades ago, Bosch has continued
to lead the way in automotive oxygen sensor design and innovation,” says
Eric Yagley, senior product manager oxygen sensors for Robert Bosch
LLC, Automotive Aftermarket North America. “Today’s Bosch Wideband
oxygen sensor has a more sophisticated sensing element that provides a
signal to the vehicle’s ECU that is proportional to the amount of oxygen
in the exhaust.”
The automotive oxygen sensor was developed by Bosch as emissions systems
were beginning to be established in the 1970s. At that time, a growing
need to meet new stringent emission standards resulted in countless
rounds of testing and development, and ultimately the first automotive
oxygen sensor, the Bosch Lambda Sensor, was created.
As an early adopter of the technology, Volvo was the first manufacturer
to equip its vehicles with automotive oxygen sensors, starting with the
1976 Volvo Lambda Sonde. In the years since, automotive oxygen sensors
have become an essential part of the modern emissions system which
monitors and regulates the combustion process, with many applications
utilizing multiple oxygen sensors in the vehicle exhaust system.
The company says one of the best testaments to the quality of Bosch
oxygen sensors came in 2012. The NASCAR Sprint Cup Series made the
switch from carbureted to fuel-injected engines, and Bosch became the
exclusive oxygen sensor of NASCAR. In 2016, Bosch extended its
partnership with NASCAR to include fuel pumps and injectors as well.
Bosch offers a full coverage program of aftermarket automotive oxygen
sensors, produced on the same manufacturing lines as Bosch OE sensors.
These aftermarket sensors feature OE form, fit and function to meet or
exceed manufacturer specifications. Bosch Oxygen Sensors are jointly
engineered and manufactured in the United States and Germany.
ISweek（http://www.isweek.com/）- Industry sourcing & Wholesale industrial products
2016年7月27日星期三
2016年7月25日星期一
The Oxygen Sensor and How it Works
An oxygen sensor is also known as an (O2 Sensor) which is a
vital component of any vehicle’s emission system.
Some old vehicles have fuel injection systems, while all new
vehicles have them, in which a computer will regulate the amount of fuel that
is delivered to the engine. The computer will communicate with the sensors
throughout the system to determine how much fuel to deliver to the engine and
of course, how frequently.
The oxygen sensor is found in the exhaust manifold.
One end of the oxygen sensor will detect the oxygen levels
in the exhaust flow. The other end will connect to the wiring that gives all
the information to the computer.
The computer will then use the sensor readings to make sure
that the engine is getting the right amount of fuel. If there is too much or
too little fuel, the readings from the oxygen sensor will change, and this will
then make the computer readjust the amount of fuel that is being delivered to
the engine.
An oxygen sensor will fail from time to time. Whenever the
sensor malfunctions, all the important feedback about the engine performance
will then be lost. This will then cause the computer that runs the electronic
fuel injection system to have absolutely no idea of how much fuel to deliver to
the engine.
An O2 sensor always has a mileage rating. This indicates to
us how long the sensor is expected to last. There are a few different ways of
finding this information.
A vehicle owner’s manual or a shop manual should state what
the lifespan of the oxygen sensor is expected to be. If none of these books are
available then the dealership will be able to look up the information for a
specific vehicle. Also auto parts stores will have the information. In general
the oxygen sensor should last approximately 30,000 miles in older vehicles and
60,000 miles in newer vehicles if not more, but be sure to check your cars
manual or techincal service bulletin for the right time to change it.
When you find out the mileage rating for the O2 sensor in
your vehicle, it is always a good idea to keep all records of when any
mechanical work is done on the vehicle. Therefore if you know at least when the
sensor was replaced in the first place you will know when it needs to be
replaced again.
If you replace the oxygen sensor regularly it will help:
- Maintain your gas mileage.
- Help prevent other related car troubles.
- Helps prevent failed emission tests due to malfunctioning
oxygen sensors
- Help prevent poorly running engines with rich gasoline
mixes.
2016年7月1日星期五
Global Automobile Oxygen Sensor Market Capacity, Production, Revenue and Growth Rate (2011-2021)
‘Global Automobile Oxygen Sensor Market Research Report’ is
an exclusive study offered by ‘The Market Reports’ which analyze production,
consumption, sales and key company’s profile.
This report analyse the Automobile Oxygen Sensor industry in
two aspects. One part is about its production and the other part is about its
consumption. In terms of its production, it analyzes the production, revenue,
gross margin of its main manufacturers and the unit price that they offer in
different regions from 2011 to 2016. In terms of its consumption, it analyzes
the consumption volume, consumption value, sale price, import and export in
different regions from 2011 to 2016.
Automobile Oxygen Sensor industry report also provides a
prediction of its production and consumption in coming 2016-2021. At the same
time, it classifies different Automobile Oxygen Sensor based on their
definitions. Upstream raw materials, equipment and downstream consumers
analysis is also carried out. What’s more, the Automobile Oxygen Sensor
industry development trends and marketing channels are analyzed. Finally, the
feasibility of new investment projects is assessed, and overall research
conclusions are offered.
Preview
of topics covered in Automobile Oxygen Sensor Market Report are as follows:
- Industry Overview of Automobile
Oxygen Sensor
- Industry Chain Analysis of
Automobile Oxygen Sensor
- Manufacturing Technology of
Automobile Oxygen Sensor
- Major Manufacturers Analysis of
Automobile Oxygen Sensor
- Global Productions, Revenue and
Price Analysis of Automobile Oxygen Sensor by Regions, Manufacturers,
Types and Applications
- Global and Major Regions Capacity,
Production, Revenue and Growth Rate of Automobile Oxygen Sensor 2011-2016
- Consumption Volume, Consumption
Value, Import, Export and
- Gross and Gross Margin Analysis of
Automobile Oxygen Sensor
- Marketing Traders or Distributor
Analysis of Automobile Oxygen Sensor
- Global and Chinese Economic
Impacts on Automobile Oxygen Sensor Industry
- Development Trend Analysis of
Automobile Oxygen Sensor
- Contact information of Automobile
Oxygen Sensor
- New Project Investment Feasibility
Analysis of Automobile Oxygen Sensor
- Conclusion of the Global
Automobile Oxygen Sensor Industry 2016 Market Research Report
2016年4月12日星期二
Use of NDIR Sensors for rea-time monitoring of CO2 levels in coal mine drainage discharge
The chemical weathering of limestone in abandoned coal mines by both
carbonic and sulfuric acids can lead to aqueous concentrations of
dissolved CO2 much higher than those predicted to be in equilibrium with
the atmosphere. After water is discharged from a mine portal, dissolved
CO2 degasses rapidly as a function of distance and topography and
becomes more aerated in the process.
The accurate monitoring of CO2 in such environments by conventional methods, such as alkalinity titration, is difficult due to the geochemical instability of the water during sample processing. Earlier work in our laboratories showed that a volume expansion method used in the beverage industry worked well in determining CO2 in mine waters under field conditions, but it still suffered from the need to collect grab samples and transfer them to a carbonation meter, a step that results in the loss of some CO2.
Additionally, the ability to collect CO2 data remotely to determine natural fluctuations over time is desirable. Here we report on the preliminary use of a non-dispersive infrared (NDIR) CO2 sensor enclosed in a gas-permeable membrane to make measurements directly in the discharge of an abandoned bituminous coal mine in southwestern PA. Results showed that this method was superior to both alkalinity titration and volume expansion as a method of CO2 detection in this environment.
Long-term measurements in the fluctuation of dissolved CO2 were possible, especially in waters nearest the portal, where the active precipitation of iron did not interfere with gas transfer across the synthetic membrane covering the NDIR sensor. Additional examples of the benefits of this analytical approach will be presented.
ISweek（http://www.isweek.com/）- Industry sourcing & Wholesale industrial products
The accurate monitoring of CO2 in such environments by conventional methods, such as alkalinity titration, is difficult due to the geochemical instability of the water during sample processing. Earlier work in our laboratories showed that a volume expansion method used in the beverage industry worked well in determining CO2 in mine waters under field conditions, but it still suffered from the need to collect grab samples and transfer them to a carbonation meter, a step that results in the loss of some CO2.
Additionally, the ability to collect CO2 data remotely to determine natural fluctuations over time is desirable. Here we report on the preliminary use of a non-dispersive infrared (NDIR) CO2 sensor enclosed in a gas-permeable membrane to make measurements directly in the discharge of an abandoned bituminous coal mine in southwestern PA. Results showed that this method was superior to both alkalinity titration and volume expansion as a method of CO2 detection in this environment.
Long-term measurements in the fluctuation of dissolved CO2 were possible, especially in waters nearest the portal, where the active precipitation of iron did not interfere with gas transfer across the synthetic membrane covering the NDIR sensor. Additional examples of the benefits of this analytical approach will be presented.
ISweek（http://www.isweek.com/）- Industry sourcing & Wholesale industrial products
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