# R006 Assignment Help

Unformatted text preview: Given N=1500 rpm → ω = 2*Pi*N/60 = 157.08 rad/s. Rod length l = 150 mm = 0.15 m; Crank r = 0.06 m; and Pin off-set d = 0. PISTON VELOCITY AND ACCELERATION:- From equations in slide#24, we have v = 0 for θ=0 o (intake TDC). Looks like some brackets are missing in the equation given there because it is dimensionally incorrect. Please correct the equation for acceleration as follows: a = 0.06*(157.08) 2 { 1 + [(0.06/0.15)* (cos 2- 0)/1] + [(0.06/0.15) 3 *(cos 2 0 * 0)/1] } = 2072.63 m/s 2 . RECIPROCATING FORCE:- Given that M REC = 3 kg and (e/l) ratio is 0.005, using equation in slide#25, we have F REC = 3 kg* 0.06*(157.08) 2 *[cos270 - (0.005*sin270) + (cos(2*270)*0.06/0.15)] = -1754 N or 1.75 kN magnitude force. *Notice that the θ value during compression BDC would be 180 o (for a value of 0 o at intake TDC) and hence θ = 270 o during the mid-way of compression. 5. Find the value of split pin angle for a V8 engine with a bank angle of 60 o . Also, perform an engine unbalance analysis for this engine by evaluating the first order and second order forces. Hint: Refer to slides 49-52 SPLIT PIN ANGLE:- Firing interval (FI) = 720/8 = 90 o . Bank angle (given) = 60 o . So, the split pin angle (SPA) = 90 - 60 = 30 o . ENGINE UNBALANCE ANALYSIS:- Crank Pin arrangement for this engine can be seen in slide#63 shown as below: As calculated before, SPA or δ = 30 o . Then the engine unbalance forces due to the reciprocating masses can be evaluated as follows (similar to that in slide#49).masses can be evaluated as follows (similar to that in slide#49)....
View Full Document

#### Assignment Writers UK To Facilitate Students

Assignment Help On Web, as one of the leading UK assignment writing services have never felt the need to blow our own trumpet and show off our skills. We have always believed that our writing will speak for itself. That said, we will, at least once boast of our assignment writers who are some of the best in the world and have therefore only brought added laurels to our service.

We, as a leading service offers our skills in assignment help UK, always believed that the quality of the work can speak for itself. It is for this reason alone that we have made it a habit to ensure the best assignment writers UK are all employed in our service. For this reason, the writers also ensure that the work that they provide is 100% original and non-plagiarised. The work must also answer all the specifications that are provided in the question so as to ensure that the students will never have any cause to complain.

In a further effort to ensure that students’ results do not suffer, we, also ensure the assignment writer delivers the work within the deadline and edits it before submission so that they always stay at the top of their class!

Get A Discount!