Lab 5 Reciprocating Engine Operation

Select a car automatic speed (cruising speed) control system as a process. The overall controlling process hava a fuel control unit/valve, controller, and other instruments to act as an automatic feed back speed control system. Draw a complete block diagaram for this specific speed control proces, name the components and explain the process briefly.

NVIDIA GEFORCE GTX (intel) CORE I7 Bth Gen Chapter 19 Applying Pneumatic Power 475 Valve B Valve C Extension pilot Retraction pilot Valve A Goodheart-Willcox Publisher Figure 19-11. Automatic cylinder reciprocation is possible with this circult The cylinter continuously extends and retracts as long as the system is pressurized and valve A is activated. cylinder continues to extend until the ramp depresses the activation mechanism on Valve C. When Valve C is shifted, air is directed to the Retraction pilot of the four-way directional control valve. The pilot shifts the valve to direct air to the rod end of the cylinder. The cylinder begins to retract. The ramp moves off Valve C, which allows the Retraction pilot line to vent. The cylinder continues to retract until the ramp depresses the activation mechanism on Valve B This allows system air pressure to again activate the Extension pilot, beginning another sequence. The cylin- der continues to reciprocate as long as Valve A is held in…

4:01 A moodle.nct.edu.om Question 1 Not yet answered Marked out of 1.00 P Flag question In type of system ,the input and output have direct connection in between. O a. Dynamic O b. Closed loop O c. Static O d. Open loop Question 2 Not yet answered Marked out of 1.00 P Flag question Air conditioner is an example for less accurate system. Select one: O True O False Question 3

Task 8 - Induction Systems In order for combustion to take place an induction system is required to feed fuel and air into the cylinder of an engine. To improve efficiency and performance spark ignition (SI) engines are now adopting compression ignition (CI) engine technology by injecting fuel directly into the cylinder just before the point of ignition however these engines still require an air induction system. Carburettors: before fuel injection technology had been fully developed carburettors (carbs) were used to create a fuel/air ratio at different engine speeds and loads. A cold start facility was also fitted albeit manually operated. The demand for more performance has meant the fixed choke carb' was no longer suitable. More complex carbs' were developed (twin choke) as well as variable choke (constant depression) carbs which used engine vacuum (during throttle opening) to vary the size of choke according to operating requirements.

Which of the following choices is correct.1 regarding the right sequence of combustion process phases of Sl engines špark ignition - combustion - turbulence - exhaust špark ignition - early fame development - flame propagation - flame termination Intake - compression - power - exhaust O Fuel injection - combustion - flame propagation - auto-ignition Ignition delay in spark ignition engine can .2 be defined as The period between start of injection .and start of combustion The period between spark onsets and start of combustion The period between spark onsets and actual change in pressure rise The period between spark onsets and start of auto-ignition Severe auto-ignition (knock) can effect the .3 :following parts of the engine The piston O Piston rings C Engine head O Head gasket O All of the above O

This is a diagram of a domestic hot-water system. The gas valve is operated by the controller, which, in turn, is operated by the temperature measuring and comparing device. The gas valve operates the main burner in full-on/full-off modes. Hot Water Faucel (nomaly closed) Flue Gases Cold Water Pressure Reliel Valve Check Valve Temperature Measuring and Comparing Device Controller Skop Valve Gas a) Draw a simplified Fault Tree for this hot-water system b) Find the minimal cut sets c) Find the minimal path sets 华

A pick and Place machine is being used to transfer a box. The arm is extended (out) by energizing a solenoid valve; when the valve is de-energizes, the arm retracts (in). In the same way, a second valve closes the grip (when energized) or opens the grip (when de-energized). Here's a diagram of this "machine": Grip Air Cylinder Grip open Grip Closed Box Arm Air Cylinder Arm In Arm Out The system is really slow... it actually takes 3-4 seconds for the arm to fully extend. An engineer created the below diagram. Start Pressed Time (seconds) Box Falls - 1 -2 -3 - 4 - 5 -6 –7 -8 – 9 – 10 Extend Arm Close Grip Question (finally!). Which statement is completely true regarding this design? It uses the Master Clock scheme. Given this diagram, the arm will probably start to retract before the grip fully closes. O If the arm takes 4 seconds to retract (return), the box will be dropped "mid-flight" It uses the Domino Scheme. Things can't happen in the wrong sequence. It uses the Master Clock…

Give one example of an engine management system fault for each component Air-flow meters Temperature sensors And for each of the following: (5 - 10 words each Intermittent faults Multi-system faults Introduced as a result of a system repair Indirect, caused by the influence of external systems In your answer, briefly explain the process that would be followed to diagnose the fault.

For a 4-stroke, SI engine with the following parameters: crank angle degree (CAdeg ATDC), 20 start of combustion (soc) crank angle degree: -10 CAdeg ATDC burn duration: 40 CAdeg Calculate the mass fraction burned (between 0 to 1) based on the Wiebe function. (assume a=5 and m=2) Give your answer to 2 decimal places.

III.Question and Answer 1.Understand the given Physical process control diagram and explain the working of the system. Actual level Reference Controller Measurement level System H Pump Tank Liquid Level Control System Electronics Coach 2. Understand the given Industrial process control system and convert it in to Block diagram (draw neatly) 4-20 mA signal FC 4-20 mA signal FY FT 3-15 PSI signal FV Pump Pipe InstrumentationTools.com

Batch-5 1973: Ford Pinto : Fuel System design  write about fuel lines and fuel filter in detales.

5. Mark the correct statement for Flight computer architecture. a. Neither the ELACS nor the SECS provide the only control to either the pitch or the roll axis. b. Both ELACS and SECS provide the control to pitch and Yaw Axis. c. Both ELAC and SECS Have full control or Pitch and Roll Аxis. 6. To increase the redundancy and safety the power supplies to individual control surfaces (Actuators/Motors) are signaled by a. Different lanes but same hydraulic system. b. Same lane and Different hydraulic system. c. Different lane and Different hydraulic system. 7. Communication between the FBW system computers is done via a. ARINC 429 data bus. b. Normal twisted wire cables. c. No communication happens. 8. The ELACS control the aircraft in pitch and they do so by sending commands to the left and right elevators and also by sending longer term trim commands to the "Trimmable Horizontal Stabilizer". Which law is this a. Direct Law b. Normal Law c. ELACS never control Horizontal Stabilizers, No Law…

In an industry, the water in a boiler tank needs to be kept at constant pressure, water to the tank comes at constant flow rate and steam is coming from a valve to maintain the pressure. A pressure gauge is used to measure the water pressure in the tank. a. Provide the block diagram representation using a PID controller for the above mentioned condition (Control the pressure using the proportional valve.). b. explain the working principle.

robot manipulator configuration LLR:TR

Typical DI engine heat-release-rate diagram (2) (1) (3) +(4) SOI EOI 160 a b170 180 190 200 210 Crank angle, deg (1) period (2) combustion phase (3) combustion phase (4) A combustion phase Rate of heat relcase

Tumble flow has been found to accelerate .9 the combustion process and improve engine performance and it can be defines :as A rotational air motion around an axis perpendicular to the crankcase axis A rotational air motion around an axis parallel to the cylinder axis A rotational air motion around an axis .perpendicular to the cylinder axis .None of the above O The effects of minimising the distance.10 between the spark plug and the end gas :islare Combustion will be as rapid as possible Producing high engine speeds and thus .higher power output The rapid combustion reduces the time n which the chain reactions that lead to knock can occur All of the above

Represent in block diagram form, the control system used in automatic control of speed of a steam turbine.

In company that designs road cars and heavy trucks, it important to make the proper selection of the engines. Your part as a system energy engineer is to make a proper selection between an engine operates on Otto cycle/gasoline engine or Diesel cycle/diesel engine. Your head of department asked you to provide a detailed technical report that shows your selection for engine to be used with heavy truck vehicle. This is best achieved by performing the following tasks: Section.1: 1. Which engine does operate at lower rpm and has higher air-fuel mass ratio? 2. Which engine does burn fuel more completely? 3. Which engine has lower fuel cost? 4. Explain what compression ratio for Otto and Diesel cycles means 5. Explain what cut-off ratio for Diesel cycles means 1:06 pm 6. Explain the limitations of SI engines in terms of their ability to operate at much higher compression ratios. What is this limitation called? 7. Provide general plot(s) for thermal efficiency, 7 vs compression ratio, r for…

What are the accessories(and each of its function) attached to the charging system of the internal combustion engine? For the detailed answer. I will rate helpful. Thank you.

DI 10:08 P/S PUMP ALTERNATOR IDLER CRANKSHAFT A/C COMPRESSOR During your in-service training, you are tasked with the analysis of an automotive belt layout illustrated in the figure. The diameters of respective pulleys are: 76 mm (Diameter of the E alt alternator), = 102 mm (Diameter of the crankshaft), 50 mm (Diameter of the P/S pump), • Pac = 25 mm (Diameter of the A/C ас Compressor), The P/S pump is accelerated from n1 = 60 rev/min to n2 crankshaft completed Ner 320 rev. Analyse the system and then calculate: = 520 rev/min after the II

Discuss the basic operating principle of Internal combustion engines (ICE) we are currently using (provide drawing if necessary)

Below figure shows Ts diagram of an aircraft engine. Draw the engine diagram only. Answer the following: a) What is TIT and max temperature magnitudein this engine? b) What is the fuel to air ratio in main CC and AB. c) Guess the approximate pressure ratio of the compressor making suitable assumption/data. 06 2000 K 1200 K 03 ATO (combustion) 02 01 565 K Pa 04 5 959 K ATO (afterburning)

When diagnosing engine management system faults, under what circumstances would the single trigger event on an oscilloscope be used? (10 - 20 words)

Q.3 Refer to the valve timing diagram. Calculate the total duration of inlet and exhaust valve openings. Inlet Exhaust Q.4 With reference to the valve timing diagram, suggest how to improve volumetric efficiency of the combustion process (e.g. for competition use). Q.5 An internal combustion engine produces torque and power. State definition of both terms and show equations used for mathematical calculations. Torque Power

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Engine Type: Single cylinder Four stroke Diesel engine, Bore: 0.0875m, Stroke: 0.11m Capacity: 661.5 cc, Power: 6 H.P. at 1500 rpm, Torque: 2.96 kg.m at 1500 rpm and Compression Ratio :17.5:1 Explain how to measure the :- Fuel consumption. Inclined manometer readings for air flow. RPM, power output etc. (iv) Study of various components of diesel engine. (ii)

Identify the function, nature and operation of the three system of G450 aircraft: 1. Hydraulic Landing Gear System of G450 2. Pneumatic Bleed Air System of G450. 3.Enviromental Control System of G450.

Which may not be an input of a control system? * actuating signal; setpoint; controlled variable; reference value.

How has Tcas played a role in aircraft

HWAC ENGG533

What is meant by 'sensor bias voltage' and how is it used in an engine management system? (70 - 100 words)