Bug fixes from Niklas.

applications/solvers/combustion/dieselEngineFoam/createSpray.H

@@ -32,7 +32,5 @@ if (dieselSpray.twoD())
     gasMass0 *= 2.0*mathematicalConstant::pi/dieselSpray.angleOfWedge();
 }
 
-reduce(gasMass0, sumOp<scalar>());
-
 gasMass0 -=
     dieselSpray.injectedMass(runTime.value()) - dieselSpray.liquidMass();

applications/solvers/combustion/dieselEngineFoam/spraySummary.H

@@ -23,8 +23,6 @@
             gasMass *= 2.0*mathematicalConstant::pi/dieselSpray.angleOfWedge();
         }
 
-        reduce(gasMass, sumOp<scalar>());
-
         scalar addedMass = gasMass - gasMass0;
 
         Info<< "Added gas mass................. | " << 1e6*addedMass << " mg"

src/engine/engineMesh/engineMesh/engineMesh.C

@@ -43,7 +43,7 @@ Foam::engineMesh::engineMesh(const IOobject& io)
     linerIndex_(-1),
     cylinderHeadIndex_(-1),
     deckHeight_("deckHeight", dimLength, GREAT),
-    pistonPosition_("deckHeight", dimLength, GREAT)
+    pistonPosition_("pistonPosition", dimLength, -GREAT)
 {
     bool foundPiston = false;
     bool foundLiner = false;
@@ -80,14 +80,14 @@ Foam::engineMesh::engineMesh(const IOobject& io)
     }
 
     if (!foundLiner)
-    { 
+    {
         FatalErrorIn("engineMesh::engineMesh(const IOobject& io)")
             << "cannot find liner patch"
             << exit(FatalError);
     }
 
     if (!foundCylinderHead)
-    { 
+    {
         FatalErrorIn("engineMesh::engineMesh(const IOobject& io)")
             << "cannot find cylinderHead patch"
             << exit(FatalError);
@@ -96,17 +96,25 @@ Foam::engineMesh::engineMesh(const IOobject& io)
     {
         if (pistonIndex_ != -1)
         {
-            pistonPosition_.value() =
-                max(boundary()[pistonIndex_].patch().localPoints()).z();
+            pistonPosition_.value() = -GREAT;
+            if (boundary()[pistonIndex_].patch().localPoints().size())
+            {
+                pistonPosition_.value() =
+                    max(boundary()[pistonIndex_].patch().localPoints()).z();
+            }
         }
-        reduce(pistonPosition_.value(), minOp<scalar>());
+        reduce(pistonPosition_.value(), maxOp<scalar>());
 
         if (cylinderHeadIndex_ != -1)
         {
-            deckHeight_.value() = min
-            (
-                boundary()[cylinderHeadIndex_].patch().localPoints()
-            ).z();
+            deckHeight_.value() = GREAT;
+            if (boundary()[cylinderHeadIndex_].patch().localPoints().size())
+            {
+                deckHeight_.value() = min
+                (
+                    boundary()[cylinderHeadIndex_].patch().localPoints()
+                ).z();
+            }
         }
         reduce(deckHeight_.value(), minOp<scalar>());