enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. On-board diagnostics - Wikipedia

   en.wikipedia.org/wiki/On-board_diagnostics

   The Society of Automotive Engineers (SAE) recommends a standardized diagnostic connector and set of diagnostic test signals. ~1994: Motivated by a desire for a state-wide emissions testing program, the CARB issues the OBD-II specification and mandates that it be adopted for all cars sold in California starting in model year 1996 (see CCR Title ...

3. Engine test stand - Wikipedia

   en.wikipedia.org/wiki/Engine_test_stand

   The facility, often offered as a product to automotive OEMs, allows engine operation in different operating regimes and offers measurement of several physical variables associated with the engine operation. A sophisticated engine test stand houses several sensors (or transducers), data acquisition features and actuators to control the engine ...

4. Exhaust gas analyzer - Wikipedia

   en.wikipedia.org/wiki/Exhaust_gas_analyzer

   Carbon monoxide sensors are used to assess the CO amount during an Ministry of Transport test. [1] In order to be used for such test it must be approved as suitable for use in the scheme. In the UK, a list of acceptable exhaust gas analysers for use within the MOT test is available via the Driver and Vehicle Standards Agency website. [2]

5. OBD-II PIDs - Wikipedia

   en.wikipedia.org/wiki/OBD-II_PIDs

   OBD-II PIDs (On-board diagnostics Parameter IDs) are codes used to request data from a vehicle, used as a diagnostic tool.. SAE standard J1979 defines many OBD-II PIDs. All on-road vehicles and trucks sold in North America are required to support a subset of these codes, primarily for state mandated emissions inspections.

6. Automotive wheel speed sensor - Wikipedia

   en.wikipedia.org/wiki/Wheel_speed_sensor

   Speed sensor failures are frequent, and are mainly due to the extremely harsh operating conditions encountered in rail vehicles. The relevant standards specify detailed test criteria, but in practical operation the conditions encountered are often even more extreme (such as shock/vibration and especially electromagnetic compatibility (EMC)).

7. Built-in self-test - Wikipedia

   en.wikipedia.org/wiki/Built-in_self-test

   Most automotive engine controllers incorporate a "limp mode" for each sensor, so that the engine will continue to operate if the sensor or its wiring fails. Another, more trivial example of a limp mode is that some cars test door switches, and automatically turn lights on using seat-belt occupancy sensors if the door switches fail.

8. Electronic stability control - Wikipedia

   en.wikipedia.org/wiki/Electronic_stability_control

   A yaw rate sensor that measures the rotation rate of the car. The data from the yaw sensor is compared with the data from the steering wheel angle sensor to determine regulating action. [47] A lateral acceleration sensor that measures the vehicle's lateral acceleration. This is often called an accelerometer. Wheel speed sensors that measure ...

9. Tire-pressure monitoring system - Wikipedia

   en.wikipedia.org/wiki/Tire-pressure_monitoring...

   To save energy and prolong battery life, many dTPMS sensors do not transmit information when parked (which eliminates spare tire monitoring) or apply a more power expensive two-way communication which enables wake-up of the sensor. For OEM auto dTPMS units to work properly, they need to recognize the sensor positions and must ignore the signals ...